Help and advice

V1.5 Release notes.

01/03/2025 / Stephen / 0 Comments

v1.5.664 – 2026-04-23

Fix ‘- synthedit’ is now added to most-recent-filename (MRU) when saving during export-plugins.

v1.5.663 – 2026-04-23

Fix for patch-cables not exporting correctly in some cases.

v1.5.662 – 2026-03-05

Patch Cable Diag drawing outside bounds [0164] Patch-cables disappearing when others added/removed.

v1.5.661 – 2026-03-03

Fix for lines (connections) disappearing when nodes overlap.

v1.5.660 – 2026-02-02

Keyboard – fix for not sending trigger pulses (+updated unit test)
Backport – fix for crash in wav_file.cpp writing files with more than 2 channels

v1.5.659 – 2026-01-09

Pin renaming not working on auto-rename but not auto-duplicate pins.

v1.5.658 – 2025-12-19

Recent Files menu now updated when Saving a project during export as plugin.

v1.5.657 – 2025-12-16

Fixes Loss of “Snap To Grid” Setting After Crash.

v1.5.656 – 2025-12-12

Disables fast-math for IIR filters in SE2JUCE.
Fix for a newly created container’s coordinates going offscreen.

v1.5.655 – 2025-11-26

Fix for Freq Analyser3 when changing FFT size.

v1.5.654 – 2025-11-25

Renameable (but not auto-duplicate) pins can now be renamed correctly.

v1.5.652 – 2025-11-24

Freq Analyser3 – min and max dB pins now work correctly.

v1.5.651 – 2025-10-14

Fix for some soundfonts producing unwanted clicks during their looping stages.

v1.5.650 – 2025-10-13

Fix for MIDI automation not being sent in some cases.

v1.5.648 – 2025-09-26

SE now displays error when attempting to load .synthedit files as prefabs, .SE1 or .seprefab files load correctly as prefabs.
Note: SE1 files from V1.4 need V1.4 installed to migrate them to a V1.5 prefab structure.
Audio settings panel no longer attempts to sync the sample-rate dropdown with the ASIO driver settings.

v1.5.647 – 2025-09-23

Code Skeleton script now copies module to ‘modules-staged’ folder
The Build Code Skeleton operation is now placing mp_sdk_gui.cpp and mp_sdk_gui2.h into the sdk folder.
The Code Skeleton no longer writes useless headers.

v1.5.646 – 2025-09-22
The sample rate selector jumps back to current setting whilst you are trying to change it.
Fixed crashes when attempting to change preset on empty document.
MIDI-CV2 now has more accurate smoothing on the pitch-bender signal.
Added Blob Overloader (DSP) and Blob overloader (GUI) modules.

v1.5.645 – 2025-09-17

MIDI-CV2 Has more accurate smoothing on pitch-bender signal

v1.5.644 – 2025-09-15

fix for AU Validation of enum parametersFix Registration name not saving in Windows App Store build

v1.5.643 – 2025-08-21

Added command line arg ‘/upgradexml’ for use by SynthEdit 1.6 when loading older project files.

v1.5.642 – 2025-08-14

Audio settings sample-rate selection is now always enabled.

v1.5.640 – 2025-08-07

fix for effects on mono tracks in Logic Pro

v1.5.639 – 2025-07-24

Fix unwanted black areas when resizing windows (AT LAST!)
Dragging a module is now undoable.

v1.5.638 – 2025-07-17

Fix for misaligned CPU graphs on some modules.
Dragging a module is now undoable.

v1.5.636 – 2025-07-15

Fix for windows refreshing unnecessarily with deep-colour disabled

v1.5.634 – 2025-07-02
Fix for module browser opening squashed with ‘disable deep color’.

v1.5.633 – 2025-07-01
Update simdutf to latest version.

v1.5.632 – 2025-06-30
Experimental fix for module browser being too small.

v1.5.631 – 2025-06-26
Views now refresh their HDR mode when dragged to new monitor.

v1.5.630 – 2025-06-16
More consistent rendering of transparency (alpha) on 8-bit swapchains, and on HDR screens.
Added Gamma Test module and png
Added ‘Disable Deep Color Swapchain’ option for low-powered GPUs

v1.5.628 – 2025-05-14
[0154] Rotary Switch – mouse detection shifted left

v1.5.627 – 2025-05-12
Fix hang when properties pane (at right) is showing many changing parameters.

v1.5.626 – 2025-05-12
Fix hang when an ASIO driver fails to start.
Fix crash when switching ASIO drivers.

v1.5.625 – 2025-05-01
Fix for GCC compiler warnings

v1.5.624 – 2025-04-29
Fix VST3 plugins not recalling MIDI Automation

v1.5.623 – 2025-04-28
Improvements to ASIO driver setup.
Fix for audio driver setup repeatedly reverting to 11k sample rate.
ASIO – fixed some driver control panels failing to open from preferences dialog.

v1.5.622 – 2025-04-21
Fix hang when using audio driver “” (No audio driver selected)

v1.5.621 – 2025-04-14
Fix for audio engine crash when running with no sound-out module.

v1.5.620 – 2025-04-11
Fix “hang” sometimes when using ASIO control panel.
Also seems to have cured occasional/frequent sound engine crashes too.
Fix buzzing after disconnecting wires to Sound-Out module while audio is active.
Fix for SynthEdit running at the wrong sample rate when the ASIO driver doesn’t support the user preference.

v1.5.617 – 2025-04-08
[0147] Changing a pin in the properties panel causes Processor to restart

v1.5.616 – 2025-03-27
Fix export log’s erroneous “OTHER only” message

v1.5.614 – 2025-03-14
Faster font rendering.
Fix for sliders losing their Min/Max settings during un-containerize process.

v1.5.613 – 2025-03-06
Fix new modules getting placed at origin (0,0) (CenterPoint() function bug).

v1.5.612 – 2025-02-21
AU blank initial preset name now displays as ‘Default’ as in VST3 plugins

v1.5.611 – 2025-02-20
Fix for the Peak Det at 192kHz (instant attack like other rates)
VST3 – fix Processor and Editor values un-synced when DAW changes preset.

V1.5.610 – 2025-02-13
VST3 plugins ‘Save Preset’ now opens at the correct VST3 preset folder
VST3 plugins ‘Save Preset’ now fills in a suggested Preset filename (not just *.vstpreset)
VST3 – Saving and Overwriting a preset will now clear the ‘changed’ indicator (HC_PROGRAM_MODIFIED)

V1.5.609 – 2025-02-05
Various modules: – more robust initialization of lookup tables

V1.5.608 – 2025-02-04
JUCE export – correctly quotes resource file names in CMakeLists.txt

V1.5.606 – 2025-01-31
File Dialog modules now correctly shorten paths to Soundfonts etc. when they are in a sub-folder
Audio Files setting now applies to Soundfonts (as well as wavs).

V1.5.605 – 2025-01-31
Fix crash in Oscillator2 when the pitch goes infinite.

v1.5.602 – 2025-01-29
Export-JUCE now ensures that the target resources folder exists.

v1.5.601 – 2025-01-28
Fixed crashing on export-plugins. AppStore Build. (Missing licence.txt file)

v1.5.600 – 2025-01-27
Fixed crashing on export-plugins. (Missing licence.txt file)

v1.5.597 – 2025-01-23
Fix for SDK function ‘getRegisteredName()’ not working in plugins

v1.5.596 – 2025-01-23
More robust preset handling (with large presets)

v1.5.595 – 2025-01-21
#91 Debug display text-meter freezes.

v1.5.592 – 2025-01-09
Fix for low brightness on HDR monitors.
VST3 activating “Ignore Program Change” even when not enabled during export.

v1.5.589 – 2024-12-19
SynthEdit now retains MIDI device settings more robustly.

v1.5.588 – 2024-12-18
Inserting a prefab now respects the original z-order (front-to-back)
Improved fix for prefab top-level modules Z-order

v1.5.587 – 2024-12-16
Fixed “Don’t Export” option on module causing module to mute in Editor.
Added option “Disable Hardware Graphics” for intel GPUs [0081] Intel GPU perform poorly with SynthEdit

v1.5.586 – 2024-12-09
Inserting a prefab now respects the original z-order (front-to-back)

v1.5.585 – 2024-12-06
[0068] Fix for rounding error on integer parameters with negative values.

v1.5.584 – 2024-12-05
Toolbar preset list now shows empty preset names as e.g. “Patch 004″Toolbar Preset List now syncs with Preset Browsers in project

v1.5.583 – 2024-12-04
[0068] Better rounding of negative numbers when using integer parameters

v1.5.582 – 2024-12-03
‘Find’ dialog will now update the Properties pane when it finds a module

v1.5.581 – 2024-11-25
[0073] Some Characters are Excluded from Preset Names on Plugin Export

v1.5.580 – 2024-11-22
[0072] VST Plugins not saving MIDI Learn info in presets

v1.5.579 – 2024-11-21
[0067] Ableton Live params not updated on internal preset change.

v1.5.577 – 2024-11-08
More accurate CPU readout on modules that sleep often

v1.5.576 – 2024-10-30
Fixed crashing caused by modules with output pins having non-sequential IDs

v1.5.575 – 2024-10-24
SynthEdit downloaded from the Microsoft App Store now has the same assets as the regular version.
The installer now creates ‘modules-staged’ folder during installation.
Added additional mac_assets to App Store build

v1.5.573 – 2024-10-21
Pasting a module now updates the properties pane to reflect the pasted module.
Enable Microsoft Store features

v1.5.572 – 2024-10-11
Fix for generate-code-skeleton CMake with GUI modules.
Plugins will not crash when a GUI module attempts to send more than 5MB to Processor. The oversized message will be dropped.

v1.5.571 – 2024-10-08
Updated ‘Build Code Skeleton’ for tutorial
ProcessorStateMgr now applies Ignore-PC when storing presets

v1.5.570 – 2024-09-25
Fixed the message queue being restricted to 100kB (should be 5MB).

v1.5.569 – 2024-09-24
Improve font vertical alignment on macOS
Fix for recalling initial preset which uses Ignore-PC in Wavelab 12

v1.5.567 – 2024-09-18
[0053] VST3 plugin creates a preset called “Full Reset”

v1.5.566 – 2024-09-16
Random2 module replaces Random Voltage. Random2 is truly random, (except in offline mode where it is consistently ‘random’)

v1.5.565 – 2024-09-12
Improved syncing of presets between plugins and DAW

v1.5.564 – 2024-09-09
Fixed crash when Scope tries to send data *to* DSP

v1.5.563 – 2024-09-02
[0036] Fix for “wires don’t follow container resizing”.

v1.5.562 – 2024-08-28
[0025] When a module has captured the mouse, the ‘hover’ functionality is now restricted to only the module that captured the mouse.

v1.5.561 – 2024-08-28
Fix for Container plugs default value loading as “0” when it was saved as blank.

v1.5.560 – 2024-08-28
New warning if module writer forgot to specify “graphicsApi”fix warning on MIDI in module.
Fix possible crash in ListBoxImport Bank: now refreshes the current preset if it has changes Export Bank now includes tweaks to current presetInfo.

v1.5.559 – 2024-08-21
Fixed the installer sometimes not installing ‘VC Redist’.
VST3 plugins now save changes to the presets in Ableton Live when the Audio Engine is off.

v1.5.557 – 2024-08-21
No ‘failed to copy protect SEM’ messages when the SEM didn’t exist.
Fix for plugins not saving their latest state in Logic Pro X while the Processor is suspended.

v1.5.556 – 2024-08-14
Hide “Analyze Cancellation” :from menu

v1.5.553 – 2024-08-09

Fix for MIDI Learn not saving in DAW sessions

v1.5.552 – 2024-08-08
Fix for stuck notes in a MIDI-CV2 module when it’s “upstream” of another MIDI-CV2 module

v1.5.550 – 2024-08-06
Fix for the GUI turning dark after initial draw on macOS Sequoia

v1.5.549 – 2024-07-30
Improved mouse behaviour with connections.
Faster visual feedback after making a connection.

v1.5.548 – 2024-07-30
More sensible default window size when you have multiple screens.
MIDI-CV2 now respects MIDI Channel settings.

v1.5.544 – 2024-07-11
Fix for ‘Latency Timeshift’ module not working in plugins.

v1.5.543 – 2024-07-03
Fix for mouse hover (over resize adorners)

v1.5.542 – 2024-07-02
Fix for hover detection when mouse is already captured

v1.5.540 – 2024-07-02
Improvement for parameter automation in Apple Logic Pro

v1.5.539 – 2024-06-19
MPE Pressure and Brightness values now apply to voices after note-off.

v1.5.537 – 2024-06-13
Fix for VST3 UI not respecting ‘Ignore Program Change’

v1.5.535 – 2024-06-12
Pass the parameter /nowindowlimit to synthedit when launching to disable the 5 window limit
Default values on DSP BLOB pins now working (base64 encoded).

v1.5.534 – 2024-05-31
Added ‘ContextMenuHelper’ to make handing right-click menus easier.” (originally intended for SE1.6).
Added ‘ContextMenuHelper’ to make handing right-click menus easier.

v1.5.533 – 2024-05-22
Improved fix for Logic Pro automation bug

v1.5.532 – 2024-05-21
Fix for GUI not moving in response to automation in Logic Pro (ARM)

v1.5.531 – 2024-05-16
Fix for a potential crash when placing MIDI-CV2 into empty container

v1.5.529 – 2024-05-13
Better preset behaviour

v1.5.527 – 2024-05-02
SE2JUCE export – sessions. Presets now not written to disk (go in binary)

v1.5.526 – 2024-04-23
Fix for the oversampler module reporting incorrect CPU

v1.5.525 – 2024-04-17
Slider output is more accurate at end of smoothing.

v1.5.524 – 2024-04-16
Sample Osc2 (SF2) module now supports independent left/right loop points.

v1.5.523 – 2024-04-16
Lower CPU on macOS (-ffast-math)
Improved trimming of skin filenames when browsing via properties pane

v1.5.521 – 2024-03-26
Fix for SEMs not being copied to VST3 because of anti-virus software due to copy-protect step.
Fix ‘missing OversamplingDetect.sem’ message

v1.5.520 – 2024-03-22
Modules with no pins can now be selected/dragged.
Modules with no DSP pins are now instantiated anyhow in plugin
Structure Group: easier to select lines inside a structure group
‘Exclude from plugin’ no longer mutes module within editor

v1.5.519 – 2024-03-21
Container GUI Input pins now propagate a default value inside to the connected module.

v1.5.518 – 2024-03-20
Fix sub-panels getting stuck in ‘Visible’ mode when the container has defaults set on unconnected GUI input pins.

v1.5.517 – 2024-03-20
Freq-Analyser – nicer clipping at right axis

v1.5.516 – 2024-03-18
Fix for jittery controls on AU plugins.

v1.5.515 – 2024-03-15
Structure-Group no longer leaves ‘trails’ when dragged.

v1.5.514 – 2024-03-14
Fix for flickering graphics on low-end GPUs.

v1.5.513 – 2024-03-13
Fixed BPM-Tempo module not sleeping.

v1.5.512 – 2024-03-06
Fix for latency reporting on AU

v1.5.511 – 2024-03-04
AUs now report latency to DAW

v1.5.510 – 2024-02-28
Fixed the crash when Replace dialog indirectly closes the Window that opened it.

v1.5.507 – 2024-02-26
Export as JUCE no longer erases VST3 plugin.
Export VST now exports only the relevant skin files.

v1.5.506 – 2024-02-22
Better MIDI 2.0 handling

v1.5.504 – 2024-02-21
Support for IMpGraphics3::hitTest2new module: Diagnostic/Bad Voltage
Menu “Show skin files” now always enabled.
Export-juce reminds to save changes if necessary.
Better decoding of MIDI messages (ignore 16 byte)
SV Filter2 more robust in the face of NaNs.
Fix for jittering controls in Ableton Live 11 VST3s on mac.

v1.5.503 – 2024-02-05
Fix for AU parameter automation not working

v1.5.502 – 2024-02-02
Hover working again.

v1.5.499 – 2024-01-31
Export JUCE now support adding manual Binary Resources to the JUCE project

v1.5.498 – 2024-01-31
No ‘Save Changes’ msg when exporting as JUCE

v1.5.497 – 2024-01-29
More robust ProtectedFile2
Fix for Frequency Analyzer 2
Better description of skin files in the readme.txt
Waveshaper formula now updates when changes made from Properties panel
VA Moog Filter is a little more stable at high frequency settings

v1.5.496 – 2024-01-26
Fix for crash with FeedbackDelay – MIDI

v1.5.495 – 2024-01-26
Fixed crash in host.resolveFilename()

v1.5.494 – 2024-01-25
Oversampling Control defaults to ‘off’

v1.5.493 – 2024-01-24
Support for larger clipping area.
Fix host-control “Oversampling/Rate” when accessed from DSP.

v1.5.492 – 2024-01-19
Resolve Filename look in plugin Resources folder by default (not x86_64 folder)

v1.5.490 – 2024-01-12
Re-optimized SINC filters
Fix incorrect behaviour when DAW buffer size not multiple of 4 (SSE prequel)

v1.5.488 – 2024-01-11
Revert bug in Pan module
SDK – fix possible crash in Bitmap.GetSizeF()

v1.5.487 – 2024-01-10
Fix for the SINC filter over-writing the output buffer.

v1.5.486 – 2024-01-10
Lower CPU spikes when restarting plugin (e.g. due to patch cables or oversampling)

v1.5.485 – 2024-01-10
Fix possible status error in Pan module.
Attempt to fix preset-change glitches in plugins with patch-cables.

v1.5.484 – 2024-01-09
Fix for Scope text drawing upside down on macOS

v1.5.483 – 2024-01-08
Additional fix for high CPU when switching presets

v1.5.482 – 2024-01-05
SFZ files now load on background thread

v1.5.481 – 2024-01-04
New module” Fixed Values (int64)
Fix for entering 64-bit integers in properties pane
Better support for auto duplicating GUI pins (GUI fixed values modules).

v1.5.479 – 2024-01-03
Fix for excessive CPU when switching presets (empty PM BLOB comparison)

v1.5.477 – 2024-01-02
Build-Code-Skeleton – Better CMake generation.

v1.5.476 – 2023-12-23
Panels open a little faster. (cached paramID).

v1.5.475 – 2023-12-22
New Fixed-Values-GUI modules.

v1.5.474 – 2023-12-21
Fix to avoid resetting controls when containerizing things.

v1.5.473 – 2023-12-21
Fix glitchy node insertion on lines.
Fix for arrow on curvy lines being off center

v1.5.472 – 2023-12-20
Better support for 64-bit integers.
Better pin names when Containerizing.

v1.5.471 – 2023-12-14
Smarter containerize procedure, (minimizes the number of plugs).

v1.5.470 – 2023-12-13
Update for JUCE export.

v1.5.469 – 2023-12-12
Fix for JUCE export when skin filenames contains spaces.

v1.5.468 – 2023-12-08
Better reporting of multi-midi-cv errors.

v1.5.466 – 2023-12-07
Fix possible crash when deleting a module with it’s debug screen open.

v1.5.465 – 2023-12-05
Fixed duplicated wires when Containerizing.

v1.5.464 – 2023-12-04
Fix for MPE on MIDI chan 16.

v1.5.463 – 2023-11-29
Fix for voice allocation bug (over-stealing)

v1.5.462 – 2023-11-29
More efficient caching of graphics resources (module outlines)

v1.5.461 – 2023-11-28
GUI Keyboard – less visually stuck notes
Arpeggiator – less stuck notes

v1.5.460 – 2023-11-28
Fix crash when AU fails to load a SEM.
Better behaviour when running under Parallels emulator on M1.

v1.5.459 – 2023-11-23
Fix tooltips not working on AU

v1.5.458 – 2023-11-23
Added support for AU ‘Reset’ feature (clear the effect ‘tail’)

v1.5.457 – 2023-11-23
Fix crash when BLOB size exceeds message queue capacity.

v1.5.456 – 2023-11-20
Fix Text Entry position in AU.

v1.5.455 – 2023-11-17
“Lasso” selection ignores hidden sub-panels.

v1.5.454 – 2023-11-15
Better thread-safety when accessing presets

v1.5.453 – 2023-11-14
More consistent line-spacing on AU text

v1.5.452 – 2023-11-14
Fix for text alignment issues in Logic Pro and Garage Band

v1.5.451 – 2023-11-01
Fix for partially blank GUI in FL Studio

v1.5.450 – 2023-11-01
Fix for presets not affecting DSP in Prosonus .
Keyboard (CV) responding to clicks in plugin.

v1.5.449 – 2023-10-31
Fixed MIDI timing on AU.
Joystick image clips it’s drawing.

v1.5.448 – 2023-10-31
Optimized drawing on macOS

v1.5.447 – 2023-10-30
Fix possible crash with feedback delay modules.
CPU Meter clips to it’s bounds.

v1.5.446 – 2023-10-24
Fix all text italic.
Fix bitmap brush offset.

v1.5.445 – 2023-10-24
Bitmap brush drawing at correct phase.

v1.5.444 – 2023-10-23
Better color blending on macOS.
Impulse Response now updates it’s axis labels when sample-rate changes.
‘Duplicate modules’ message from SEM bundles when scanning VSTs.

v1.5.442 – 2023-10-16
SFZ Sample player now includes mac version.

v1.5.441 – 2023-10-13
SFZ Player now auto-reloads SFZ file anytime the file is updated.

v1.5.440 – 2023-10-13
Changing Patch Mem-Integers range now reflected in MIDI learn range.

v1.5.439 – 2023-09-28
Fix for crash when mousing over panel background after rescanning modules

v1.5.438 – 2023-09-28
Fix for not scanning some mac modules

v1.5.437 – 2023-09-20
Fix for Logic Pro crash (arcs)

v1.5.436 – 2023-09-19
Fix crash in Logic Pro when drawing invalid arc segments

v1.5.435 – 2023-09-15
VST3 better support for poly-aftertouch (in the absence of Note-on events).
Midi Player2 – new pin “Send Clocks” allows you to disable sending of MIDI Clock messages.
MIDI learn working on List parameters.
Added support for universal SEM bundles.

v1.5.434 – 2023-09-14
Freq Analyser – Fixed Hz labeling.

v1.5.433 – 2023-09-04
Fix for non-English number formatting etc. (locale).

v1.5.432 – 2023-09-01
MIDI converter now respects poly pressure channel.
MIDI Monitor now shows PolyAfterTouch as ‘PolyAfterTouch’ (not ‘AfterTouch’).

v1.5.431 – 2023-09-01
MIDI conversion now correct for poly aftertouch with value of zero.

v1.5.430 – 2023-09-01
Fix project loading and exporting when Windows username contains non-western characters.

v1.5.429 – 2023-08-31
Fix Increment3 ‘flashing’ (mouse grab feedback loop).

v1.5.427 – 2023-08-30
Fix for Increment module pulsing.

v1.5.426 – 2023-08-30
Better pin indexing on XML project export.
Better error reporting when exporting plugins.

v1.5.425 – 2023-08-29
MIDI Filter – now filters Poly aftertouch by key number.

v1.5.424 – 2023-08-28
When plugin is on track with fewer channels than the plugin has, extra output channels are ignored (were outputting to channel 0)

v1.5.423 – 2023-08-21
MIDI Switches now send all-notes-off when switching

v1.5.422 – 2023-08-18
New MIDI switch modules

v1.5.421 – 2023-08-18
Re-balanced voice stealing algorithm to give more importance to note duration

v1.5.420 – 2023-08-17
New module – Arpeggiator

v1.5.418 – 2023-08-17
Module browser scroll bar length is now proportionate to scrollable area.
The MIDI de-channelizer is back (adapted for MIDI 2.0).
MIDI Monitor is now clearer about note key vs note pitch.

v1.5.417 – 2023-08-11
Save-as-Plugins – avoids resetting the plugin identifier unless it’s blank.

v1.5.416 – 2023-08-11
VST3 – support for any number of surround channels up to 24, plus 36, 49, 64

v1.5.415 – 2023-08-11
VST3 – Added support for Surround channels of: 9-14, and 24 channels
The Module Browser now has scroll bar.

v1.5.414 – 2023-08-10
Removed ‘save fxb bank’ option. It only crashed 64-bit plugins.

v1.5.413 – 2023-08-10
Fix for VST3 surround plugins

v1.5.412 – 2023-08-09
Better support for surround formats in Cubase:
mono, stereo, quad, 5.0, 5.1, 7.0, 7.1

v1.5.411 – 2023-08-09
Fix for glitchy tooltips in MixBus

v1.5.410 – 2023-08-08
Fix Cubase reverb tails (silence flags)

v1.5.409 – 2023-08-07
Rack flag saving in XML project files
More robust filters (Butterworth V2)

v1.5.408 – 2023-08-04
Fix for Studio One – ‘plugin deactivated deactivated because it produced invalid data’

v1.5.407 – 2023-08-03
Projects without explicit patch-manager crashing in DAW (regression).
Fix for loading XML projects which were upgraded by SE 1.4.

v1.5.406 – 2023-07-21
Better snapping to grid when containerizing.
Patch Point modules not saving in SEM cache.

v1.5.405 – 2023-07-20
MIDI-In MPE mode now passes all Controllers on the Master Channel/s.

v1.5.404 – 2023-07-18
Fix for voices suspending too soon in some situations.

v1.5.403 – 2023-07-17
Fix crashes when copying/pasting

v1.5.402 – 2023-07-14
Connectors aligned better with plugs on structure view.
Module Browser – better grouping of filter results by category.
Dropping a new module snaps it to the grid.

v1.5.401 – 2023-07-14
Moved MPE Control module to category ‘MIDI’.
Fix for MPE-Mode not working when exporting instruments with no explicit patch-manager.

v1.5.400 – 2023-07-12
Fix for bitmap brush offset on macOS.

v1.5.399 – 2023-07-11
Fix for offset background in Reaper mac

v1.5.398 – 2023-07-07
Added export option ‘Create a VST2 using SE 1.4’

v1.5.397 – 2023-07-06
MIDI Out crashing when fed MIDI 2.0.

v1.5.396 – 2023-07-06
Module-browser – fix glitchy highlighting.
Tooltips not working in Harrisons MixBus (DAW).

v1.5.394 – 2023-06-30
Scroll wheel working on macOS.
Added Thick Osc source.

v1.5.393 – 2023-06-28
Butterworth Filters (V2) can now be set to a lower frequency (0.00001 * SR)

v1.5.392 – 2023-06-23
Polyphony Control working when in main container

v1.5.391 – 2023-06-23
Fix crash when MIDI-CV in main container

v1.5.390 – 2023-06-23
Listbox now responds to scroll wheel (or <ALT> Scroll wheel in editor).

v1.5.389 – 2023-06-23

BPM Tempo – new pin ‘Processor Resumed’ which is for clearing Reverb and Delay tails after the DAW has suspended the plugin for a while.

v1.5.387 – 2023-06-20
Overbright pixels now supported on macOS
Additive bitmaps now use sRGB color space (was RGB).

v1.5.386 – 2023-06-16
Reverb – kill reverb tail when looping a clip especially in FL Studio Clip Effects

v1.5.385 – 2023-06-16
Fix possible overload of DSP->GUI queue.
Butterworth Filters2 – changes to cutoff frequency are now smoother.

v1.5.384 – 2023-06-15

Fix updates from DSP -> GUI getting lost.
Fix for loading prefabs from the File menu.

v1.5.382 – 2023-06-14
Fix for containerizing a Slider might reset it to default values.

v1.5.381 – 2023-06-14
Remove “Remove Rack Module” context menu.

v1.5.380 – 2023-06-09
Fix for crash on mac (non-invertible transforms)

v1.5.379 – 2023-06-0
Tentative fix for Apple Silicon Logic Pro automation

v1.5.378 – 2023-06-09
Fix for crash on macOS (UTF conversion)

v1.5.377 – 2023-06-07
CI Added ‘DrawTextW’ variation which takes a ‘DrawTextOptions’ enumeration.

v1.5.376 – 2023-06-07
Fix for Find and Replace modules causing crashing.

v1.5.375 – 2023-06-01
Fix assertion on exit.

v1.5.374 – 2023-06-01
Scanning modules now shows ‘busy’ cursor.
Fix for occasional crashes in the Module Browser.

v1.5.373 – 2023-05-29
Fix for crash when drawing patch cables on macOS.
Module browser – color coded module names

v1.5.372 – 2023-05-25
List Box now scrolls to the current selection when updated programmatically.
Fix for objects ignoring mouse when made ‘visible’ directly under the mouse cursor.

v1.5.371 – 2023-05-24
Only one “Sound Engine is not responding” message (not two).

v1.5.370 – 2023-05-23
Attempted fix for objects getting shifted far off edges of panel

Unreleased
BLOB2 support

v1.5.368 – 2023-05-18
Fix for weirdness when opening a window with <CTRL> held
<ctrl> p – opens Preferences

v1.5.367 – 2023-05-17

Fix for crashes when adding new modules from the browser.
‘Save As’ dialog defaults to same folder that the project was loaded from.

v1.5.366 – 2023-05-11
Added ‘Rescan Modules’ menu. <ALT> E R

v1.5.365 – 2023-05-10
Fix crash when using the CPU Meter module in a plugin.
Faster loading time for VST plugins.
Added support for MIDI Poly/Mono channel mode messages (CC 126, 127)

v1.5.362 – 2023-05-05
Smart audio pin updated to double precision (for consistency in unit tests)
Fix spurious DSP restart.
MIDI 2.0 Bender working.

v1.5.361 – 2023-05-04
MIDI Bender Range support

v1.5.360 – 2023-05-04
Bender not working.

v1.5.358 – 2023-05-03
Smaller GMPI events.

v1.5.357 – 2023-05-03
Stricter enforcement of Manufacturer Code rules during export.

v1.5.356 – 2023-05-01
GMPI text (UTF8) pins now support file browser in properties panel.

v1.5.354 – 2023-04-24
Fix for Prefabs not scanning correctly.

v1.5.353 – 2023-04-19
Fixed scanning the wrong folder for modules.

v1.5.352 – 2023-04-18
Added mp3, ogg and flac file-extensions to dialog when opening Audio files.

v1.5.350 – 2023-04-13
File Dialog better at choosing starting folder.

v1.5.349 – 2023-03-31
Module Browser now groups module list by category

v1.5.348 – 2023-03-30
New module added – ‘MIDI Recorder’

v1.5.347 – 2023-03-29

Don’t export “Debugger” to WV.
XML Slider ‘hint’ not saving.

v1.5.346 – 2023-03-22
Latency compensation for MIDI signals.
Fix faulty file loading (.synthedit).
Fix XML patch format (repeat count).
Volt-to-Float2 now faster at converting ‘static’ signals.
Fix mono mode (MIDI CV2)Comparator Status errors.

v1.5.345 – 2023-03-15
Fix for some tests broken by recent updates.

v1.5.344 – 2023-03-14
New module ‘Silence Gate’ shuts off very quiet signals which are annoyingly streaming.
Faster async restarts in offline mode.
Fix delayed notes when played note count exceeds polyphony.

v1.5.343 – 2023-03-09
Fix for unresponsive mouse (when sub-panel hidden by click on child).
Better support for MIDI ‘Reset All Controllers’.

v1.5.342 – 2023-03-06
Module browser won’t collapse childrenadded operator= for DSP string pins and std::stringEnable MIDI 2.0 in AU plugins.

v1.5.341 – 2023-03-02

Fix for Butterworth filters not sleeping.

v1.5.340 – 2023-02-24
Fix for crashes when upgrading an old project.

v1.5.338 – 2023-02-20
Module browser group filter buggy.

v1.5.337 – 2023-02-20
Fix for MIDI Learn not working

v1.5.336 – 2023-02-16
Renaming a plug now reflects on the module immediately.

v1.5.335 – 2023-02-15

Fix inconsistent offline renders.
Fix for note-on on first sample of offline render.

v1.5.334 – 2023-02-13

Fix possible crash when clicking a bitmap that didn’t load.
Fix crashes when module .dll failed to load.

v1.5.333 – 2023-02-10
Disable cancellation testing code.

v1.5.332 – 2023-02-09
Spurious “Can’t load Module:” messages when save-as-vst.
Improved voice allocation, especially at the start of offline rendering.

v1.5.331 – 2023-02-02
Fix memory leak in plugins

v1.5.330 – 2023-02-01
Added ‘All Files’ option to load preset dialog.
Patchmem in/out now updates correct preset (not always #0).

v1.5.329 – 2023-02-01
New prefab ‘Pitch Bender’.
New module ‘Spring3’ – differentiates between mouse holding control and DAW holding it.
Improved support of oversampling and polyphony in different containers.
Fix for Spring 3 sticking.

v1.5.328 – 2023-01-31
New modules GUI Converters for Double and Int64.
New modules: ‘Float to Double’, ‘Double to Float’, ‘Int to Int64’ and ‘Int64 to Int’.
Auto scroll works with selection drag box.
Find and replace dialog, correct text color.

v1.5.327 – 2023-01-30
Fix possible crash when closing SE.
Fix crash when synth did not contain own patch-Automator
Attempt fix for patch – Automator downstream of oversampler (containing controls)
Altered module browser divider “Show on Module” working

v1.5.326 – 2023-01-25
Less laggy module browser (part 2).

v1.5.325 – 2023-01-23
Module Browser less slow.

v1.5.324 – 2023-01-23
New module ‘Float to MIDI’ – like MIDI-to-CC but also supports Bender and Mono Aftertouch.

v1.5.323 – 2023-01-20
Fix spurious “different version of some modules message” when plug defaults are changed from “” to “0”

v1.5.322 – 2023-01-20
Fewer memory leaks on macOS.
Fix for Freq Analyser crash

v1..5.321 – 2023-01-19
Fewer memory leaks in AU.
Fewer memory leaks.
Fix leaking Bitmaps in AU plugins.

v1.5.320 – 2023-01-17
Objects pasted in a structure go to the center of panel.
Helper methods for opening embedded files easily.
GUI SDK now has simplified resource finding.

v1.5.319 – 2023-01-16
Better support for SVG files

v1.5.318 – 2023-01-16
Scanning modules now updates module groups.
Fix HC_PROCESS_RENDERMODE.
Fix for ‘Sound In’ connections confused after migration from 1.4 project
Don’t save .synthedit files to most-recent-file list.
Module browser better highlighting of text under mouse.

v1.5.317 – 2023-01-11
Removed VST folder setting.
Fix silence flags when plugin has more than one set of outputs.

v1.5.316 – 2023-01-11
Fix for AU background image mis-aligned.
Bitmapbrush translation working on macOS.

v1.5.315 – 2023-01-09
Dragging module to a non child window no longer drops the module.
Clicking over module browser (while dragging) cancels module drag.

v1.5.314 – 2023-01-05
Fix for automatic converter modules not working in plugins.

v1.5.313 – 2023-01-03
Wave Recorder module now working in plugin.
Wave Player now working in plugins.

v1.5.312 – 2022-12-29
Skin text files can now contain comments (start line with ;).
Fix for sharing violation when upgrading a prefab.

v1.5.311 – 2022-12-28
Dragging a patch cable to an existing destination no longer draws two patch cables
<Ctrl> and <Shift> allow you to run a new patch-cable, without dragging an existing one.

v1.5.310 – 2022-12-27
Double-click opens container only if you didn’t click over an embedded control crashing switches.

v1.5.309 – 2022-12-27
Line nodes now respect snap-to-grid.
Fix for crash in save-as dialogue.

v1.5.308 – 2022-12-27
Fix for Windows not redrawing.

v1.5.307 – 2022-12-27
Bitmap fast-hit-test cleared when loading new bitmap.
Moved PkgInfo file into ‘Contents’.
DrawingFrame.open more robust.

v1.5.306 – 2022-12-26
Fix for spurious “module will be upgraded” dialogs.
Plugins now look for files (wav etc.) in plugins Resource folder.
Add ‘busy’ cursor when loading/saving projects.

v1.5.305 – 2022-12-23
Modules now slightly transparent to aid tracing wires.

v1.5.302 – 2022-12-22
Fix preset format (when parameter is polyphonic).

v1.5.301 – 2022-12-21
Fix possible crashes with SDK modules (pinIterator).
Fix possible crashes when loading older .synthedit projects.

v1.5.299 – 2022-12-21
Fix for messed up graphics (XML project format bug).

v1.5.297 – 2022-12-16
Fix loading XML projects with incomplete module database flags. (IO_CONTAINER_PLUG, IO_SETABLE_OUTPUT).
Fix for ‘CF_OLD_STYLE_LISTINTERFACE’ not stored in XML projects.
Fix ‘IO_SETABLE_OUTPUT’ not stored in XML projects.
Clean up confusion between pin id and pin idx.
Fixes for loading .synthedit project files (IO_SETABLE_OUTPUT).

v1.5.295 – 2022-12-14
Fix for module browser resize glitch.
Better behaviour when making new connections (temporary line hangs around longer).

v1.5.293 – 2022-12-13
Zoom relative to mouse position

v1.5.292 – 2022-12-13
Fix crash with ‘MIDI In’ but not ‘Sound Out’

v1.5.291 – 2022-12-13
MIDI IN – changed MPE Mode default to ‘off’.
Fix registration module not working in plugin.
Fix MIDI automation output.

v1.5.288 – 2022-12-12
Fix brightness issue with Plain Image module (in tile mode).

v1.5.287 – 2022-12-09
Export JUCE will now export to ../SE_Project/Resources/ (provided the synthedit project is also in a folder called ‘SE_Project’). Otherwise export to Documents/SynthEdit Projects/JUCE_Export/

v1.5.286 – 2022-12-09
Fix truncated CPU readout on debug panel.
Added new ‘Waveshaper2b GUI’ Sub-Control.

v1.5.285 – 2022-12-08
Fix for stuck notes in Cubase (multiple hits with hold-pedal).
Fix possible crash loading plugin (preset index error).
<ESC> now cancels cable dragging.

v1.5.284 – 2022-12-07
Fix for spurious feedback path warning.
Waveshaper2B now updates the text right after you type it.

v1.5.283 – 2022-12-05
Fix weirdness when upgrading modules on load

v1.5.282 – 2022-12-02
New smoothed Butterworth filters.
Fix possible crash when loading modules with fewer pins than when saved.

v1.5.280 – 2022-12-02
Fix unwanted latency with multiple patch-automators (upstream flag escaping local patch-automator).
MIDI Monitor now shows tuning changes correctly.

v1.5.278 – 2022-12-01
Fix Frequency Analyser crashing sometimes.
Fix wrong preset playing after ‘power on’.

v1.5.275 – 2022-11-25
MIDI Keyboard now sends MIDI 2.0
Module Browser has better resizing.
Module Browser – more conventional scrolling limits.
Browser – ‘All’ shows Container and IO Mod.

v1.5.273 – 2022-11-24
Fix tempo not initialized on DSP restart.
Fix for audio not responding to preset changes in some cases.

v1.5.272 – 2022-11-23
Hold <ALT> to Scroll Slider value in Editor (avoids accidentally scrolling it when navigating).
Mouse wheel now works on Image2.
Fix ‘Sound Out” module getting connections mixed up when upgrading from SE 1.4.

v1.5.271 – 2022-11-23
SE2JUCE now automatically adds resources to cmake.

v1.5.269 – 2022-11-16
Reverted latest vc_redist because it doesn’t work on azure pipelines yet.

v1.5.268 – 2022-11-15
SE now accepts command line switches ‘rego’ and ‘regoname’.

v1.5.266 – 2022-11-11
Fix crash on ASIO control panel.

v1.5.265 – 2022-11-11
Fix for Japanese preset names on macOS.

v1.5.264 – 2022-11-10
Updated to latest VC Redistributable (14.34.31931)

v1.5.263 – 2022-11-09
Popup Menu no longer ticks items in ‘momentary’ mode.
List-Combiner works better in ‘momentary’ mode.

v1.5.262 – 2022-11-04
Fix crashes (due to ‘repeat’ count wrong on patch mem).

v1.5.261 – 2022-11-04
Modules browser – scrolling resets whenever a new category is selected
Module Browser now uses triangles for expand/contract, the same as SE 1.4MB – colors closer to SE 1.4.

v1.5.258 – 2022-11-03
Fix for possible crash when loading a project (invalidate measure)

v1.5.257 – 2022-11-02
Module Browser – better scroll limits.
Module Browser resizes swapchain when app window resized.

v1.5.256 – 2022-11-02
Better resizing of Image2 module when loading new image (in SynthEdit only).

v1.5.255 – 2022-11-02
Fix for tool-tips
Fix for crash when loading prefabs with obsolete modules.
Fix HC_POLYPHONY not avail in some plugins (with patch-manager in main container only).
Module Browser works all the way down.
Module Browser – <esc> cancels drag.

v1.5.254 – 2022-10-31
Fix mac plugin names converting to Camel-case text.

v1.5.253 – 2022-10-31
Fix for graphics getting stuck in ‘hovered’ state when mouse leaves a window.
Fix for controls not working in AU.
Poly Synth2 prefab – connected ‘mouse down’ pins on knobs.
Importing prefabs can now upgrade the file format if needed.

v1.5.252 – 2022-10-28
Fix memory leak (Image2 module on mac).

v1.5.251 – 2022-10-24
More compact preset XML.
Module Browser can expand/shrink module categories.

v1.5.250 – 2022-10-21
New Drawing methods by Sasha.
Fix for parameter gestures on AUXML.
Project “automation” field now corrected (-1) for automation = <none>.
Module Browser categories working better.

v1.5.249 – 2022-10-17
Fix for saving VST3 presets with Japanese characters.

v1.5.248 – 2022-10-14
Fix for Module Browser – Categories now working

v1.5.247 – 2022-10-13
New searchable module browser.
VST3 plugins now support all MIDI CCs on channel 1.
Fix possible crash on closing plugin window.
Added 192kHz sample-rate option.

v1.5.246 – 2022-10-04
Fix for crash in Soundfonts (interpolator was reading off of the end of the allocated memory).

v1.5.243 – 2022-10-04
Added support to SDK for ‘winding rule’ when filling paths.

v1.5.242 – 2022-09-29
Scroll Wheel doesn’t stick on a slider when it’s already scrolling the view.
Added ‘hover’ detection to SDK.

v1.5.241 – 2022-09-28
Fix for Patch points, now drawing in plugin again.
Fix for patch-cables.
Added Scroll Wheel Support to the SDK

v1.5.240 – 2022-09-27
VST3 bypass working (make a bool parameter called “BYPASS”).
DH Reverb mode pin now working.

v1.5.239 – 2022-09-27
Fix ‘Registration Check’ module not working in plugins

v1.5.238 – 2022-09-26
Line nodes not saving in .synthedit projects
Exported plugins now have dsp xml file obfuscated.
Downgrade to support macOS 10.13 (was 10.15).

v1.5.237 – 2022-09-23
New module added: ‘Lookahead’ allows you to time-shift audio and/or report latency to the DAW.

v1.5.236 – 2022-09-23
Fix for stuck first note in FL Studio.

v1.5.235 – 2022-09-23
Fix missing ‘VST3_Info.plist’ – installed to the wrong folder.

v1.5.234 – 2022-09-22
Fix for preset names not saving in .synthedit projects.

v1.5.233 – 2022-09-22
Fix for possible crash (HC_POLYPHONY).
Fix crashes in the Sound-font Player2 when loading a new Sound-font while playing notes.

v1.5.232 – 2022-09-22
Fix for ‘VST3_Info.plist’ missing from installer.

v1.5.231 – 2022-09-20
Fix for System Command module not working on Windows.
Added ‘PkgInfo’ file to mac exports.
Add extra information to VST3 info.plist.

v1.5.230 – 2022-09-16
Fix for AU Info.plist file (AUs having wrong name).
Sound Out/in modules now have renamable pins.

v1.5.229 – 2022-09-15
Fix mac export not working.

v1.5.227 – 2022-09-14
Multi-line text boxes now respect <ENTER> key, and <TAB> exists box.
Fix polyphony controls not working when the MIDI-CV is not in same container as the Patch-Manager.
Fix exported SEM architecture reporting.
Fewer spurious ‘module incompatible’ messages.

v1.5.225 – 2022-09-12
Fix automation nodes in Cubase not showing parameter value when dragged.
Better handling feedback from async restart.

v1.5.223 – 2022-09-09
ASIO audio output working again.

v1.5.222 – 2022-09-08
Fix “race” conditions.

v1.5.219 – 2022-09-08
Fix unwanted ‘Slider upgraded’ message.
Fix possible crash loading Sliders.
‘Sound In’ and ‘Sound Out’ modules, added support for more soundcard channels.

v1.5.218 – 2022-09-07
Ensure the program name parameter is always exported.

v1.5.215 – 2022-09-05
Fix for SDK function ‘Clear()’ on macOS (phase-scope not drawing).

v1.5.209 – 2022-09-01
Unconnected IO pins now highlighted with white outline.
Removed red highlighting on unconnected lines
Prevent SE from presenting dialog boxes when called from command line.

v1.5.208 – 2022-08-30
Fix weird Containerize behaviour when the panel is locked.
Bool Inverter re-included.
The ‘edit’ menus which affect panels are now disabled when panel is locked.

v1.5.207 – 2022-08-30
SE 1.5 now stores it’s settings separately from V1.4.
Added support for VST3 silence flag.
Added support for VST3 ‘silent flag’.

v1.5.206 – 2022-08-29
Fix ‘module missing xml’ errors.

v1.5.205 – 2022-08-26
Fix for the ‘crazy lines’ syndrome.

v1.5.204 – 2022-08-25
Added more information to mac VST3 info.plist.

v1.5.203 – 2022-08-25
Fix for VST3 DAWs that send note-on with velocity 0 (to mean note-OFF).
Fix bloated export_log file.
Fix Freq Analyser crashing in Linear mode.
Random Voltage module now working in plugins again.
Fix ‘MIDI Message’ module not included on mac.

v1.5.201 – 2022-08-19
Right clicking blank space does NOT clear selected modules.
Fix crash in Steinberg plugin validator.
Trigger to MIDI now emits MIDI 2.0.
Fix for glitchy windows in Voltage Modular (removed VSTGUI dependency).

v1.5.200 – 2022-08-17
Better messages for exporting non-fat SEMs.

v1.5.199 – 2022-08-16
Fix for mouse losing ‘grab’ a few seconds after clicking first object.
Volts to MIDI CC’ channel selection working.

v1.5.197 – 2022-08-12
Improvements to Frequency Analyser.

v1.5.192 – 2022-08-08
Simpler MIDI CC emulation mode selection when exporting plugins.
Fix host controls adding extra voice values at startup.
Fixes for MIDI CC out.
Fix ‘MPE Mode’ not initializing in VST3’MIDI Message’.
Fix parsing when last byte is only 1 char ’90 33 0′.

v1.5.191 – 2022-08-05
Fix for MIDI2CV Converter on mac.
MPE Keyboard drawing ‘dots’ in correct place now.

v1.5.190 – 2022-08-05
MIDI Filter now filters channels again.

v1.5.189 – 2022-08-05
Fix possible crash in Reaper mac.
‘MPE Control’ module working on mac.

v1.5.188 – 2022-08-04
MPE Mode selection module working.
Added VST3 MIDI CC options to export-plugins dialog.

v1.5.187 – 2022-08-02
Improvements to note-expression in Bitwig.
Fixed ‘Save as Prefab’ saving to wrong folder
Fixed polyphony control showing a volts plug.
Emojis now draw in color on windows.
Better Note Expression support in Cubase.
Text Entry – fixed emojis getting scrambled.

v1.5.185 – 2022-07-28
Fix crash on close if there is unsaved data in ‘properties’ window.

v1.5.182 – 2022-07-22
Fix for ‘Fixed Values’ module with value of ‘0’ crashing when cloned.
Containers – “Controls on Parent” renamed to “Visible”.

v1.5.181 – 2022-07-22
MIDI Converters can now handle Program Changes.

v1.5.179 – 2022-07-21
MIDI Converter – added support for polyphonic aftertouch.

v1.5.178 – 2022-07-20
Polyphonic pins on GUI modules are now initialized correctly on *all* voices.
MPE Keyboard now draws dots to represent playing notes (still unfinished)

v1.5.177 – 2022-07-20
Fix for GUI-only host-controls updates getting sent to Processor.
VST3 save-preset dialog now goes to correct folder.
VST3 plugins on mac now save VST3 presets (not AU).
Save-as-Plugins – if initial preset name is blank, it’s exported as “Init”.

v1.5.176 – 2022-07-19
Removed legacy program-change parameter from VST3 plugins.
Preset Browser – now loads unknown presets from DAW as “Session” (not just first preset name).
Patch Browser ‘Modified’ pin working in plugins.
Added “Modified” pin to preset browser.

v1.5.175 – 2022-07-12
Fix for Bender on mac VST3

v1.5.174 – 2022-07-11
Fix for windows SEM not copied to VST3 when no mac SEM present (slash bugs).
AU Plugins now support MPE.

v1.5.173 – 2022-07-08
‘Midi Filter’ now supports MIDI 2.0 (and 1.0).

v1.5.172 – 2022-07-08
New module ‘MPE Mode’.
Fix crash when audio driver fails to start.
MIDI Controllers module now outputs correct Bender (-10 -> +10).
Added MPE-mode option to ‘MIDI In’ module.

v1.5.170 – 2022-07-06
Better MIDI monitor formatting.

v1.5.168 – 2022-07-05
Fix MIDI Bender conversions from MIDI 2 to 1.

v1.5.167 – 2022-07-05
VST3 plugins can send MIDI out.

v1.5.166 – 2022-07-04
Fix for BPM tempo ‘ transport run’ not working on AUs.

v1.5.165 – 2022-07-04
Add MIDI 2 Converter to mac VSTs.

v1.5.164 – 2022-06-29
Make CPU graphs tidier.

v1.5.163 – 2022-06-29
Fix for spurious [macOS SEM NOT FOUND] errors.
Fix for empty preset browser on Windows plugins.

v1.5.162 – 2022-06-27
Fixes for oversampled voices

v1.5.161 – 2022-06-27
ListEntry4 now shows menu on mouse-up (to cure closing-too-soon bug).
Fix for oversampled voices when OS last in voice chain.

v1.5.160 – 2022-06-23
Fix for polyphonic oversampling on voices.
Fix possible crash when loading older XML files.

v1.5.159 – 2022-06-17
New command-line argument ‘/rescan’ rescans modules on startup

v1.5.158 – 2022-06-15
Fix crash with polyphonic feedback modules.
Fix crash with large parameter indexes.

v1.5.157 – 2022-06-14
Fix false “corrupted off end” message boxes.
Fix Old MIDI to Gate not working.

v1.5.156 – 2022-06-10
Updated preset format to handle apostrophes in text parameters

v1.5.154 – 2022-06-06
Fix ‘Denormal Cleaner’ not available on macOS.

v1.5.153 – 2022-06-03
Fix inverted controls not working.
Export Plugins – now saves a Universal VST3.

v1.5.148 – 2022-05-20
Fix the check for staged modules so it doesn’t mess with cancellations by restarting the engine.

v1.5.147 – 2022-05-20
Fix ‘User Setting Text’ not working on mac.

v1.5.146 – 2022-05-19
Included MIDI2CV Converter module in AU plugins.

v1.5.144 – 2022-05-18
Fix “Update with 1.4” bugs’.
MIDI to Gate2′ now works also with MIDI 2.0.
‘MIDI Controllers’ module now works with MIDI 2.0 also.

v1.5.143 – 2022-05-17
Korg filter max pitch is now sample-rate adjusted and depends on saturator.
‘MIDI In’ module now provides MIDI 2.0 standard messages. (you can use the converter module to get MIDI 1.0)

v1.5.142 – 2022-05-16
New module ‘MIDI2 Converter’.
Korg Filter – increased maximum frequency limit.
Fix crash when modules specify unknown host-controls.

v1.5.141 – 2022-05-12
MIDI Monitor updated to show more info about MIDI 2.0 messages.

v1.5.140 – 2022-05-12
Fix for mouse ignoring ‘Show onModule’.

v1.5.139 – 2022-05-11
Fix for implied ‘Bools to Volts’ modules not being exported to mac.

v1.5.136 – 2022-04-27
Patch Cables now droop when being dragged.

v1.5.134 – 2022-04-26
Patch cables now register mouse hits on rounded ends.
Patch cables can be picked up by clicking near the end.
Patch Points – <ctrl> click now makes a new patch cable, even if a cable is already present.
Patch Cables now draw as faded, except when mouse is hovering over the end.
Patch Cables – <ctrl> click is now working on sub-views.
Using <shift>-click deletes Patch Cables.

v1.5.133 – 2022-04-21
New ‘Structure Group’ module.
Patch Cables are now multi-coloured.

v1.5.132 – 2022-04-14
Fix for preset browser menus.
Fix file sharing error on export-plugins.

v1.5.131 – 2022-04-13
Sliders etc. – fix for ‘font-style italic’ not working in skin files.

v1.5.128 – 2022-04-11
Fix for AU crashing in Logic Pro on M1 (font manager memory crash).

v1.5.126 – 2022-04-05
Fix meters not animating in Logic Pro X (timer initialized on the wrong thread)

v1.5.123 – 2022-03-25
‘Export Plugins’ log now identifies non Apple Silicon compatible modules.

v1.5.122 – 2022-03-24
SDK sendMessageToAudio/sendMessageToAudio now rejects messages greater than 5MB (prevents queue getting stuck).

v1.5.120 – 2022-03-22
Scanned Mac SEMs now retained.

v1.5.116 – 2022-03-21
New diagnostic module ‘CPU Family’ added.

v1.5.115 – 2022-03-21
Enable Apple Silicon support for AU and core modules.

v1.5.113 – 2022-03-11
Fix filenames with spaces failing to load in SamplePlayer2.
Fix ‘Insert module’ not being undoable.

v1.5.111 – 2022-03-09
Over sampler now supports ‘*’ for CV output signals.
Improvements to down sampling of CV signals.

v1.5.110 – 2022-03-04
Un-containerize function now more robust.

v1.5.109 – 2022-03-03
Fix crash on ‘play’ after un-containerizing a MIDI-CV module.

v1.5.108 – 2022-03-02
Fix ‘find’ function failing on first click.

v1.5.107 – 2022-03-01
Allow modules to work on older versions of macOS(10.14).

v1.5.106 – 2022-02-28
Fix Waveshapers crashing on older macOS.

v1.5.105 – 2022-02-24
Fixes for export-plugin.

v1.5.104 – 2022-02-24
Fix to stop the save VST2 feature overwriting critical VST and AU files.

v1.5.103 – 2022-02-24
Add Impulse module to mac.
Adjusted Gaussian up-sampling filter.

v1.5.102 – 2022-02-22
Prevent spurious ‘module has changed’ messages.
Fix possible crash when SE tries to display a dialog box at startup.
Fix controls that don’t handle sub-menus on right-click (>>>>).
Over sampler pins prefixed with ‘*’ in name use.
Control-signal friendly up sampling (no ripples).

v1.5.101 – 2022-02-18
Improved oversampling of control signals

v1.5.100 – 2022-02-15
When exporting plugins, any failure to copy sems results in an error written to stderr.
Slider now clips text in edit box.

v1.5.98 – 2022-02-02
Fix oversampling settings wrong in editor after restart.
Fix not saving VST2 plugin.
Fix flaky timer behavior.
Fix VST export setting lost on load.
Fix ‘Text Entry 4’ not redrawing when ‘style’ changes.
Hardened the Korg filter against abuse.

v1.5.96 – 2022-02-01
Increased resolution of Impulse Response module.

v1.5.95 – 2022-02-01
Fix crash when module SEM is renamed but not rescanned yet.
Better CPU window layout.
Increased oversampling of the up sampler from 4 to 16 coefficients to improve it’s low-pass filtering effect.

v1.5.94 – 2022-01-28
Fixed redraw failure when dragging nodes within existing line bounds.
Fix non-redraw when dragging nodes within existing line bounds.
Fix bugs in clicking lines with elbows.
Fix bugs in clicking lines with elbows.
Added ‘pow(x,y)’ option to Waveshapers formula.

v1.5.93 – 2022-01-26
Fix Sem plug defaults not effecting change until DSP restarted.
Fix auto duplicating plugs on modules with both GUI and DSP plugs.
Fix internal-SDK modules not responding to default changes in editor.

v1.5.92 – 2022-01-25
Fix spare plug color

v1.5.91 – 2022-01-17
New module ‘per note controllers’

v1.5.90 – 2022-01-14
Fix Roland SYSEX controllers moving slider only half-way.
Note Expression now working (MPE in Cubase).
MIDI output now supported from VST3 plugins.

v1.5.89 – 2022-01-11
New command-line argument ‘upgrade’ – resaves project-file in the most recent file-format.
Fix for too-bright transparent images on Windows 7.

v1.5.88 – 2022-01-06
Fix issues with automatic pin datatype for parameters.

v1.5.82 – 2021-12-17
Right-click panel now has “Locked” option.
Fix voice-allocation failure when voices are very loud.
Fixed SINC filter, less glitches at 0Hz.
SE 1.5 now suggests using SE 1.4 to upgrade incompatible old project files.
‘Locking’ a Container now locks only Panel Window (not the Structure window).

v1.5.80 – 2021-12-13
Fix bug with 32x oversampling (when patch-automator outside of oversampler).
Fix XML project not saving parameter hi/low.

v1.5.79 – 2021-12-09
Implemented depth-first module sort.
Implement Cache_Friendly Buffers.
Fix VSTs having identical parameter indexes (now auto-assigned when duplicated).

v1.5.78 – 2021-12-08
New modules String Concat, Cancellation Folder.
Fix glitch in oscillator crossfade (especially with DBF_RANDOMISE_BLOCK_SIZE).
Fix assert on ‘module not sending initial update’ for ‘PF_PARAMETER_1_BLOCK_LATENCY’ pins.
Changed color of GUI modules.

v1.5.77 – 2021-12-03
Fix for ‘Polyphony’ not loading from an xml file.

v1.5.76 – 2021-12-02
Fix for CPU redraw glitch.

v1.5.75 – 2021-11-30
Dashed lines now supported on macOS.

v1.5.74 – 2021-11-26
Modules that change latency now working in VST3 plugins.

v1.5.73 – 2021-11-18
Now takes export folder name from project filename

v1.5.71 – 2021-11-15
Vector pan know,
Fixed drawing glitch at pos 0.5.
Fixed crashes when using radial and bitmap brushes in structure window, they now fallback to plain black.
Fixed SDK GUI modules being notified twice of parameter updates.
Fix for mono mode.
Fix crash when muting a module connected to ‘WaveRecorder2’.
Fix auto-glide (broken by recent note priority fix).
Fix Mono Priority modes ‘High’ and ‘Low’. Was ignoring held keys that play for the first time only as result of releasing another.
Consolidated ‘module will be upgraded” messages.
Fix SV Filter2 glitch when resonance value is zero in a polyphonic situation.

v1.5.70 – 2021-11-12
Hit testing by dragbox now behaves like SE 1.4 (partial hits count).
Fix crash on XML project files with ‘Spare’ container plugs

v1.5.69 – 2021-11-11
Replacing ‘MIDI Controllers’ module with ‘Slider’ now does not expose obsolete ‘MIDI’ pin etc.
SynthEdit 1.5 will utilize SynthEdit 1.4 (when installed) to export VST2 format.

v1.5.67 – 2021-11-10
Fix for parameter values containing multiple consecutive spaces – (XML space collapse bug)
Fix bender range for modules: ‘MIDICV-2’ ‘MIDI-CV’ ‘Controllers’ ‘MIDI Monitor’.
Fix for locked Containers showing wrong pins.
Exported VST2 plugins no longer show extra ‘MIDI CC’ parameters.
Attempt to fix gradient banding on macOS Monterey.
Attempt to fix flickering window title on macOS.

v1.5.66 – 2021-11-09
Added support for ‘Ignore Program Change’ to VST3 plugins, this is optional in the export dialog.
Added ‘Emulate Ignore PC’ option to export-vst dialog.

v1.5.64 – 2021-10-27
Reduce spurious mouse messages to modules.
Fix tooltip timer logic.
Fix for dragging patch-cables over 3rd-party modules (dynamic_cast into dll).
Fix Pitch Bender current value getting exported to VST3 (HC_BENDER stateful).
Added Undo initial manager to plugin.

v1.5.61 – 2021-10-19
New experimental module: Cadmium Renderer.
Fix MpController::getParameterValue ignoring ‘FieldId’ argument.
Fix MpController::getParameterValue ignoring ‘FieldId’ argument.
Cadmium now does topographical sort of modules.

v1.5.59 – 2021-10-01
Fixed module name and VST Plugin name not saving in XML project format chore(se) : updated controllerhost from WV
Fix regression on parametercount override.
Fix random number on DSP thread being the same every time.
Added support for render mode

v1.5.58 – 2021-09-17
New module Diagnostic/IDE Logger.
VST3 plugins now take rendermode from DAW.

v1.5.56 – 2021-09-06
New module ‘MIDI to Gate2’ now includes trigger plug.

v1.5.55 – 2021-09-02
Removed asterisk on preset names (when loading a modified factory preset).
Fixed crash when deleting patch cables.
Fix automatic plug conversion (broke in B).
Replace feature now more forgiving of differing pin datatypes.
Quantizer – better ‘sleeping’ when input is zero.
Oscillator (naive) – phase mod pin works with fixed initial value.
No automatic connection from Int to List any more (use a ‘Int to List’ converter).
New module: Step Sequencer.
Lines drawn with gradients are now working on macOS.
Improve handling of ‘All Sound Off’ MIDI message.
Fixed plugin losing preset name after 2nd save in DAW.
Fix for parameter tweaks not saving in GarageBand and LogicPro sessions.
Fix crash with volt-to-float since last update.
Fix crash when inserting mono VST3 into Ableton Live.
Fix GUI freezing when changing latency in FL Studio.
Don’t add ‘*’ to modified preset names if they already have one.
Bools-to-Int – fixed last bool pin not working

v1.5.52 – 2021-06-28
Fix Processor->Controller queue stalls in some situations.
XML format ‘mute’ and ‘excludeVst’ now serialized.
SincFilter – fix possible crash on 32-bit systems.
Lines now drawn with curvy joins.
Impulse Response Module now availalble on macOS.
Impulse Response – fixed graphics resource leak.
Deprecated glitchy ‘Volts to List’ module:- Please use ‘Volts to List2’ module instead.

v1.5.51 – 2021-06-25
Structure view arrows now properly centered on lines.
Patchmem float in/out now saves value with preset.

v1.5.50 – 2021-06-23
New experimental module PM Float Latchable

v1.5.49 – 2021-06-22
Fix shell plugins not scanning.
Fix bug in hot reload.
Fix saving XML project in legacy format when prompted to save on close.
Added cancellation analysis

v1.5.48 – 2021-06-04
Auto-scroll improved at window edges.
Support Effects with MIDI input on macOS.
Fix problem clicking on List-Entry while dismissing it’s popup list.
Fix Wave player module glitching on macOS’.
Export JUCE’ menu added to debug version/

v1.5.45 – 2021-05-06
New module ‘Registration Check GUI’ – allows plugin to check rego even when suspended by DAW.
CPU window now works for sleeping modules.

v1.5.42 – 2021-04-22
Plugin passing auvallive coding improved detection of module update.
Improved line selection with mouse.
Fix for module live-reload when module filenames similar ‘Controls’ vs ‘ControlsXp’).

v1.5.41 – 2021-03-31
MIDI-In now has activity LED

v1.5.40 – 2021-03-30
Right-click any module now offers save-as-prefab option (was only containers).
Resizing background.png working again.
Rack modules now dragable in vst3.
More robust mouse-hover behavior.
More accurate hit-testing (XPSV).
Minor fixes for VST Shell.
Fix possible crash with DirectSound drivers.
Fix possible crash after deleting a module with latency.
Fix issue with hit-testing.
Fix for crash with nested over samplers.
Fix crash on menu ‘Selection to Prefab’.
Fix bug in Unicode conversion.
Better scanning of shell modules.
Added T skin
VA Moog Filter – now sleeps when it’s input is silent.
Saving prefabs dialog defaults to Prefab folder SYSEX.
Fixed wrong pin ID reported by ‘onMidiMessage’SDK – increased number of characters available for SDK identification (‘getSdkInformation’).
Module cache no longer using MFC.
Fixed screwup with not initializing poly parameter pins.
Fix prefabs size increasing when saved twice.
Added Prefab Browser module, code tidy.

v1.5.36 – 2021-03-03

When exporting a plugin, the SynthEdit license agreement is automatically copied to the plugin folder.
Wave-Player – fix clipping on full-scale 8 and 24 bit samples.
VST3 plugins now receive poly after-touch MIDI messages.
Rack Modules are now draggable.
Fix for communication FIFO.
Fix crash when automates a Poly Container’s controls but has no patch_automator.

v1.5.35 – 2021-02-19

xml parameter loading fixed.
New module ‘MIDI Message’.
Less annoying window resizing, (no bitmap stretching).
Fix bug in hit testing resizer.
Fix bug in Rect Inflate/Deflate.
Added ‘Rack Module’ option on context menu.
WIP .synthedit parameter values saved.
MIDI-CV2 – fixed poly-aftertouch.
Fix wonky lines when dragging.
Fix Rectangle not updating in sub-view in response to changes in Properties pane (e.g. color).

v1.5.34 – 2021-02-11
Fix loading Containers in .synthedit file format.
Fix hit testing on Panel.

v1.5.32 – 2021-02-10

New structure view: fix assert when sub-control wire connected to unavailable module.
Improved locking on preset load/save.
Improved cable drawing.
Fix for MIDI un-learn not saving in presets.
Fix ‘twisted’ wires when upgrading.
Switch modulecommand arg /autosavevst now implies /quiet.
Hide dummy view.
Fix for crashing when using prefabs containing modules that need upgrading.
Fix for crash on OS Sierra due to unsupported colorSpace.
Fix assertion saving a new project with blank title.
Fix XML serialization of autoduplicate plugs (Switches).
Fix VST3 FIFO causing memory allocations on DSP thread (audio glitches)- Updated prefabs (LED2, Peak Meter, VU Meter) to not save in presets.- ‘Help’ menu working on feedback modules

v1.5.31 – 2021-01-14
MFC based modules now upgraded on load (SE14 didn’t).
Added option to save as XML (.synthedit).

v1.5.30 – 2021-01-13
Reduce number of ‘can’t load module’ dialog boxes.
Old-style Switch modules now upgraded correctly.
Text Entry4 – moved ‘mouse down’ pin to left side like other modules.
Cleaner drawing of structure view in standard DPI.
Added ‘About..’ to module context menu.

Complex Pulse Oscillator.

09/06/2026 / Stephen / 0 Comments

Most oscillator types are just a “plain vanilla” waveform such as pulse, ramp, sine… however this aims to be a little different, and harmonically richer.
There are no third party modules used in the project, only the community HD Oscillator, which you could replace withe the stock Oscillator module.

About the Complex Pulse Oscillator.

This project was inspired by the Complex Wave Oscillator used in the Schmidt 8 voice polyphonic synthesiser. It’s not a direct copy as the original had only four oscillators, whereas this has ten.
The principle is that each oscillator generates a pulse of the same Pulse Width and frequency. The phase of the other nine oscillators can be varied with relation to oscillator one, and the phase differences of each oscillator through the chain of oscillators can also be varied (or skewed) in relation to each other.
Oscillator 1 is the carrier oscillator as it were, and Oscillators 2 to 10 are used to alter that pulse train by additive modulation, subtractive modulation, and ring modulation.
The result is that some very complex pulse based waveforms can be created.
Some examples are shown below:

Combining the oscillator outputs.

To add to the complexity of the generated waveforms, these pulse waves can be combined in three ways:
A) The outputs of Oscillators 2 to 10 are added to the output of Oscillator 1,
B) The outputs of Oscillators 2 to 10 are subtracted from the output of Oscillator 1
C) The outputs of the Oscillators are Ring Modulated using Oscillators 2 to 10 as the modulator signal, and the output of Oscillator 1 as the carrier signal.

Sub Oscillator.

To add to the harmonic depth of the oscillator we can also set any one of the oscillators to have a pitch 1 or 2 Octaves higher or lower than the rest. It may seem counter intuitive, but the position of the Oscillator which has the Octave(s) shift up or down does affect the timbre of the resulting output.

Stepping up.

The amplitude of the modulator signal can also be adjusted, to further change the output waveform.

Pulse width.

The pulse width of all the oscillators from 1 to 10 is variable, but the widths are not individually adjustable.

Phase shift.

Each oscillator from 1 to 10 can have the phase adjusted. The phase of all the oscillators is adjusted with a single control relative to Oscillator 1 which does not have a phase shift applied to it. So by adjusting the phase control the oscillators 2 to 10 all change in phase relative to oscillator 1. However this phase difference can also be skewed by using the skew control which increases or decreases the amount of phase shift applied to each oscillator. This is done by individually controlling the gain of each of the Phase Skew CV Level Controllers so that the spread of the individual Phase CV signals can be changed

Structure of the Oscillator.

As you can imagine with ten oscillators and all the associated phase change and modulation circuitry, this is quite large. So as well as making images of the structure available here, the project is also downloadable for you to study, or make use of as you wish. If you want to really understand the Oscillator, and how it operates, I do recommend downloading it as breaking up the diagram has not aided readability.

NaN and Inf values.

24/04/2026 / Stephen / 0 Comments

What are NAN and INF in SynthEdit?

The simplest expanation is:
1 divided by 0 = infinite.
0 divided by 0 = NaN.
0 multiplied by Infinity is NaN.

NaN in computing and math stands for “not a number“, but most of the math that will produce that message are described by coders and mathematicians as: indeterminate or undefined, which is just another way of saying “nobody on the planet knows how to calculate or represent the answer.

“Bad voltage” is really just a bit of slang, the correct way to refer to it is “an error message stream“, as it’s really an internally generated C++ error code message, meaning they are not really ‘voltages‘ at all.

Audio internal to SynthEdit (32 bit float) can represent float numbers between roughly plus and minus 340,282,350,000,000,000,000,000,000,000,000,000,000 before creating an error(this typically becomes anf Infinite (INF) error message in C++, although technically not infinite in math terms).

A NaN is represented by a reserved combination of bits (I.E. no other C++ value or calculation can use this combination of bits) , in both 32 bits and 64 bits IEEE floating point format, which indicates that it is Not A Number, i.e. an invalid number. By invalid we mean that the “solution” of an equation has no real world solution or has an infinite result.
The most frequent INF errors in SE are produced by attempting to divide 0 by 0, Float division by zero is a valid calculation, and resuts in Infinity. However Integer division by zero will cause an exception. Modules typically use float values (unless the division by zero is done with an integer math module ÷).

Detecting INF and NaN values.

Elena Novaretti has two useful modules, one that allow us to detect both INF/NaN, and a second that allows us to filter out these values to see if they will resolve the bug that the values are suspected of causing. The first is showing the result of trying to divide 8 by 0 (8/0=∞) as you can see this returns an INF warning by lighting the appropriate LED, but the IN/NaN cleaner has removed it.
Note: Please remember that you must reset the Detection module after it receives a NaN or INF, otherwise the module remains latched in that state, and any further different vales will not be reported!

Below is the result of dividing 0 by 0, this is a maths “impossibility” so it returns an NaN warning flag, by lighting the appropriate LED.

Important note. Once you have proved that you have a problem caused by an INF or NaN value, you must work to isolate the source, and rem,edy the problem. Using the INF/NaN cleaner to resolve the issue is not good practice, as at some point these values may well start causing other issues! You have been warned!

Operations generating NaN- The technical stuff!
There are variuous kinds of operations that can return a NaN:

Most operations with at least one NaN operand.
Indeterminate forms:
    The divisions (±0) / (±0) and (±∞) / (±∞).
    The multiplications (±0) × (±∞) and (±∞) × (±0).
    Remainder x % y when x is an infinity or y is zero.
    The additions (+∞) + (−∞), (−∞) + (+∞) and equivalent subtractions (+∞) − (+∞) and (−∞) − (−∞).
    The nth root function x n {\displaystyle {\sqrt[{n}]{x}}} when n {\displaystyle n} is zero.
    Trigonometric functions on infinities: sin(±∞), cos(±∞), tan(±∞).
    The standard treats two-argument arctangent specially: its indeterminate forms atan2(±0,±0) and atan2(±∞,±∞) are not NaN but instead various multiples of π/4.
    The standard has alternative functions for powers:
        The standard pow function and the integer exponent pown function define 00, 1(±∞), and (±∞)0 as 1.
        The powr function defines all three indeterminate forms as invalid operations and so returns NaN.
Real operations with complex results, for example:
    The square root of a negative number.
    The logarithm of a negative number.
    The inverse sine or inverse cosine of a number that is less than −1 or greater than 1.
    The nth root function x n {\displaystyle {\sqrt[{n}]{x}}} when x {\displaystyle x} is a negative number and n {\displaystyle n} is an even number.
    For the power operation x y {\displaystyle x^{y}} with x {\displaystyle x} being a negative number, the standard pow and powr functions behave differently: powr always returns NaN in this case, while pow will only return NaN if y {\displaystyle y} is not an integer.

Both types of NaNs are represented by the largest biased exponent allowed by the format (single- or double-precision) and a mantissa that is non-zero.

The bit pattern of the mantissa for a signalling NaN has the most significant digit set to zero and at least one of the remaining digits set to one.
The bit pattern of the mantissa for a quiet NaN has the most significant digit set to one

For single-precision values:

Positive infinity is represented by the bit pattern 7F800000
Negative infinity is represented by the bit pattern FF800000
A signalling NaN (NANS) is represented by any bit pattern
between 7F800001 and 7FBFFFFF or between FF800001 and FFBFFFFF
A quiet NaN (NANQ) is represented by any bit pattern
between 7FC00000 and 7FFFFFFF or between FFC00000 and FFFFFFFF

For double-precision values:

Positive infinity is represented by the bit pattern 7FF0000000000000
Negative infinity is represented by the bit pattern FFF0000000000000
A signalling NaN is represented by any bit pattern
between 7FF0000000000001 and 7FF7FFFFFFFFFFFF or
between FFF0000000000001 and FFF7FFFFFFFFFFFF
A quiet NaN is represented by any bit pattern
between 7FF8000000000000 and 7FFFFFFFFFFFFFFF or
between FFF8000000000000 and FFFFFFFFFFFFFFFF

Fixing the Stock VU meter.

15/03/2026 / Stephen / 0 Comments

It was recently noticed (by Elena Novaretti) that the stock VU Meter is wildly inaccurate. It reads 0 dB when the input is at a level of-16 to -20dB. The original structure (it’s a module that can be opened and modified, like a prefab) is shown below:

Compare the three meters shown below. The top one has had the Float Function module removed, the middle is a third party VU meter, the bottom one is the Stock VU meter (which is off scale when the others read -10 dB!):

Removing the Float Fuction module with its formula values (shown below) results in a meter that gives a fairly accurate result

The working structure is shown below.
Note: You might think “so I can just take out the Float Function, and dB to Animation as the Volts to Float is alreading giving a dB VU output”? The answer is no, this won’t work correctly, we must have the dB to animation conversion module to get the correct (non-linear) meter scaling

User Setting – Text module.

10/02/2026 / Stephen / 0 Comments

This module, although being used for the Registration system for plug-ins can be used for other purposes too.
Credits and thanks for help with this module: I have to give credit and thanks to Jeff McClintock of SynthEdit for pointing me in the right direction with using this module, as I was making a rookie error connecting it up!
Also many thanks to Sylvain Cottarel for providing the precise rules governing the checking and updating of the preferences.xml file.

How the User Setting – Text module works.

This is what the SE help file has to say:
“Stores any setting common to all instances of your plug in. For example if you want your samples always loaded from a user-specified folder.”

The module takes your settings, and creates an XML file, this file is then saved in a folder where no user permissions are needed by SE. The name entered into the product plug in the properties panel will give the XML file it’s filename.
Note: Once you have decided on the name for the settings, don’t change it, if you give the Product plug a new name it will create another XML file and folder. For this reason the left hand side plugs cannot be updated with a string from another module. These values must be set manually in the properties panel when programming.

Multiple modules.
You can use multiple User Setting – Text modules and they will append a single xml file. This allows you to save product activation information and any other user settings that need be retained across plug in session regardless of any other parameters set by assignned presets.

Product.
“Product” should be fed with the name of your VST and this is the name of the xml file that this module will create and use to store your path (and other useful info if needed). Jeff has chosen a safe location where permission to save is never requested by Windows.
You can use more of these User Settings – Text to store a wide variety of useful settings.
Important Note: The product pin must be set with exactly the same name as the plug-in name or it won’t recall settings made to the xml properly for that plug in.

Key.
If we are using more than one module to store preferences fo a number of parameters, e.g. to save colours etc so the user can “skin” the plug-in with their own panel colour, text colour, and other settings then each User Settings-Text module preference type needs to have it’s own module, each with a unique “Key” text string to separate the parameters in the XML file.

About the XML File and it’s location.
You’ll find the xml file(s) created in : C:\Users\”USERNAME”\App Data\Local\”your vst name”\Preferences.xml.
The file is re-created if it has been removed, or is not found.

1) On opening the vst, any User setting – text module looks in the app data folder if it can find a folder which has a name equal to its Product pin input (The name of the VST).
2) If the module finds this folder, it checks the folder to see if it contains a Preferences.xml file.
3) If a Preferences.xml is located, the Module reads the file if a key is present corresponding to its Key pin input.
4) If the key contents are identical, the value of the key is sent to the Value output pins (GUI and DSP)
5) If the key is not present, the module writes the value present in its Value Gui plug in the xml file, or, if there is on key present, the module writes values of its Default value plug.
6) If the module doesn’t find the Preferences.xml file in the folder or simply doesn’t find the folder, the module creates a new folder with a name corresponding to its Product plug value, then creates the Preferences.xml file inside and then writes the key value following the previous rules into the xml file.

Important note: Just to make things 100% clear the module does not know the location of the VST it is in, just where to find the relevant preferences file. This will always be correct as the module always has the full path to find the file wherever the VST is located.

Example “Skin” Setup.

The setup below allows the user to select the background colour (Rectangle) The Text colour, the Border (DAM Rectangle) colours, and the colour of the Vector Knob’s cap.
The User Settings module properties are set as follows:
1) Product = Skins Test 1 Key = Background
2) Product = Skins Test 1 Key = Text
3) Product = Skins Test 1 Key = Knob Cap .

I used the name Skins Test 1 in my example Product value. This will generate the following XML File named Preferences.xml in the folder Skins Test 1
So it would be in this location: :
C:\Users\"USERNAME"\AppData\Local\Skins Test 1\Preferences.xml.

<?xml version="1.0" encoding="UTF-8"?> <Preferences> <My_Setting_Name>0</My_Setting_Name> <Background>4</Background> <Text>0</Text <Knob_Cap>2</Knob_Cap> </Preferences>
The number listed between each of the Key names being the integer of the selected option.

Creating your Settings:
The List Entry 4 module is used to store the names of the options.
So for a list of colour options you could have set the Item List as;
Light Grey, Medium Grey, Dark Grey, Red, Green, Blue
In the List To Text module you would set the Item List pug with the matching Hex ARGB values;
FFAAAAAA, FF777777, FF444444, FFFF00000, FF00FF00, FF0000FF
Note: The sequence of colour names and ARGB values must match if you don’t want to confuse your users.
Note: There are some modules that may require a hash (#) symbol prefix on the ARGB code.
Note: Don’t forget to use commas to separate the values. The last entry needs no comma or any other symbol after it.

Storing Float values.
You could also use a Text to Float converter to control settings that need a Float value, e.g. If you were using a DAM Text Enter module which has the Font Size you could store a list of font sizes such as 12, 14, 16, 18 in both the List Entry and List to Text Modules. All you need do is connect the Item Text output plug of the List to Text module to the appropriate Float plug using a (GUI obviously) Text to Float converter. Just be careful of the Float values, some such as the Font size on the DAM Text Enter module will use the same values as the font size. Others may use a value between 0 and 1. Using decimals such as 0.4 is no problem, the modules will handle these values correctly.
Note: Both the List Entry 4 and List to Text modules have the same Item List values in this scenario; 12, 14, 16, 18

Using float values with the User Setting - Text module — Using float values with the User Setting – Text module

Ignore Programme Change.

05/02/2026 / Stephen / 0 Comments

Setting the Ignore PC/Ignore Program Change flag stops controls from responding to Patch Changes. This is useful if you are using pre-programmed patches in a Synthesizer, but want to exclude some controls such as a master volume control from responding to the patch change.

Where are IgnorePC and other parameters stored ?

The IPC parameters are stored in the same place as other plug-in parameters. It’s only that changes to those parameters from the internal preset browser that are blocked by the IPC flag. Parameters are handled by the Patch Automation module, for IPC or Patches to work this module must be contained within your plug-in.
The Patch changes and parameters are handled by the Patch Automator module.

Patch Automator module.

This module remembers the settings of the other controls. Adding this module into a container allows 128 different patches to be stored. Only the settings of the containers sliders or other controls are stored, not the containers structure. If connected to a synth’s MIDI input, it will respond to MIDI patch change messages, and will switch all controls in the same container to the new patch.
The Patch Automator (was Patch Select) module has a hidden connection to each control in the container. Hence you must not connect controls to a Patch-Select’s inputs (doing so would create a feedback loop). For the same reason, you must not connect
sub-controls to the Patch Slelect module.

Stock Modules that support Ignore Program Change;
Containers,
Joystick,
Knob,
LED2,
Mod Wheel,
Peak Meter,
Slider,
Switch,
Text Entry,
VU Meter,
Voltmeter,
Waveshaper2
Waveshaper3
Patch Memories (all),
Any module such as Image 2 that is placed inside a container can be set as IPC, so that your own sub-controls can be made to Ignore Program Changes..

Emulate ‘Ignore Program Change’

This option is shown when exporting your plugin. This feature enables the ‘Ignore Program Change’ feature to work in plugins. (previously, it worked only in the Editor). When you change a preset from the plugin UI, one or more controls will stay unchanged. This is useful for controls like ‘Master Volume’ or ‘Master Tuning’, which you want to apply to all presets.
Note: This feature is activated a couple of seconds after loading a DAW session, so if you change presets immediately, you might not see the effects of Ignore-PC at first.
Note: When you change a preset from the DAW preset browser Ignore-Program-Change is disabled. This is so that when you recall a previously saved session in the DAW, the preset is restored exactly as it was when you saved the session.

IPC in V1.4
In SynthEdit Version 1.4, Ignore Program Change did not work in plugins (or in SynthEdit itself).
IPC In V1.5
“In SynthEdit Version 1.5 we figured out a way to make it work in plugins again, but in order not to break your existing plugins we made it optional.
So if you made a plugin in SE 1.4 IPC didn’t work. With SE 1.5 you have the choice to use IPC, or leave it non-functional for backward compatibility”.

Using the SF2 Sample Oscillator.

03/02/2026 / Stephen / 0 Comments

What are SF2 Soundfonts?

SoundFont is a brand name which refers to a file format and it’s associated technology that uses sample-based synthesis to play audio from MIDI files via a soundcard. It was first used on the Sound Blaster AWE32 sound card as part of it’s General MIDI support. (The original GM Soundfont file is available from this website Musicalartefacts.com).
A SoundFont bank contains base samples in a Pulse Code Modulation format (the audio format most commonly used in WAV containers) mapped to sections on a musical keyboard. A SoundFont bank can also contain other music synthesis parameters such as loops, vibrato effect, and velocity-sensitive volume changing.
SoundFont banks can conform to standard sound sets such as General MIDI, or use other wholly custom sound-set definitions like Roland GS and Yamaha XG. If you have the necessary software, along with the time and patience you can also create your own SF2 files.

The structure of a basic SF2 Sample player is shown below. Apart from the standard ADSR/VCA there are three sections of note, shown with Blue, Green & Red backgrounds.

Note: This oscillator is only compatible with SF2 SoundFonts, it does not support SF3 or SFZ Soundfont file formats, neither does it support WAV or any other format of audio files.

Note: The SF2 Sample player is not really suitable for use in a true Wavetable Synthesizer.

Blue: SF2 Selection and Patch Loading

This section is where the main difference between a completely DSP Synthesizer, and a SF2 synthesizer resides. The required SF2 Bank of sounds is sample is selected from the File select menu. The individual sound font required to be played is then selected using the List Entry 3 – Patch module, which uses the GUI and DSP Sample Loader modules to load the required sample into the Sample Oscillator. Depending on the Patch itself it will either have an infinite loop (i.e. a string instrument sample), or a naturally decaying “single shot” (i.e. a guitar or piano sample).

Red: SF2 Sample Oscillator.

Oscillator is a bit of a misnomer (personal opinion) as it doesn’t create anything itself. The Patch is loaded into the player, and if the sound is looped, it will play indefinitely. If the sound is naturally decaying then it will just play one single time.
This is set in the patch itself, and cannot be altered at this point.
We still need to instruct the Oscillator what pitch to play the sample at, and there are also a Gate plug and a Trigger plug. The oscillator will still work without these plugs being connected, but you’ll have to re-start the audio engine to get the new patch to load.

Green: MIDI Control.

As usual we need a MIDI-CV2 module for Pitch, Trigger, Gate and Velocity signals (Aftertouch is not supported with the SF2 Oscillator).
The one important difference here is that the MIDI Patch Automator must be included for the Selection and Loading of our samples.
Note: If you are using Polyphonic mode the Allocation Mode must be set to Poly (Hard) to prevent clicking noises.

Apart from these points, you can treat the Sample Oscillator as any other SE Sound generator. The audio can be filtered, waveshaped and otherwise creatively altered. The output is Stereo, as some Soundfont patches are recorded in stereo.

The FAQ section on Soundfonts from the SynthEdit website.

Distributing Soundfonts, Wave, and MIDI Files.

Please read this section very carefully to prevent problems with “missing” soundfonts.

Often a VST will need to load one or more Soundfonts automatically. For example, your VSTs may use Soundfonts as built-in waveforms. On the end user’s PC, these Soundfonts need to be installed in the plugin VST’s folder.
Example:

VST plugin:	MySynth.dll
Soundfont:	Drums.sf2

VST path:	C:\Program Files\Common Files\VST3\MySynth\MySynth.vst3
Soundfont path:	C:\Program Files\Common Files\VST3\MySynth\Drums.sf2

The Soundfont must be in the same folder as the VST Plugin. Under ideal circumstances, you would create an installer that copies both the VST and required Soundfont to the customer’s hard drive. Each plugin you create needs to be in it’s own folder so the plugin can correctly locate any resource file.

Relative Paths

Since you don’t know the end user’s plugin folder, store Soundfont filenames as a relative path. A relative path does not contain the full Drive or folder specification, e.g. “C:\SomeFolder\”.

Before you hit ‘Export-as-Plugin’ check your Sample-Player module is using relative paths. Select the module. Locate any filename parameters (e.g. ‘Sample Loader2 Filename” ) on the Properties panel (at far right). Check if the ‘Value’ column contains a ‘relative’ filename like “Drums.sf2”. If it contains folder references ( like “C:\Samples\Drums.sf2) you must remove the drive and folder parts. i.e. change it to just “Drums.sf2”.

Important Note: Simplifying the filenames can prevent them from loading in the SynthEdit editor because SynthEdit no longer knows what folder they are in. You can either ignore these warnings and revert the filenames after you have exported the plugin, or put the Soundfonts in SynthEdit’s default audio file location. Look in the menu “Edit/Preferences/File Locations/Audio Files” for this folder. This is where SynthEdit looks for files with relative filenames.

To have SE automatically use relative paths – You must set your default audio folder before you load the Soundfont, not after. Otherwise, SynthEdit will use the full path. Alternately: set the default audio folder, then un-load the SoundFont, then re-load the SoundFont.

If you follow this simple guidelines you should have no issues with using SF2 soundfonts or the Sample Oscillator.

About sound: pitch, loudness, phase and harmonics.

23/01/2026 / Stephen / 0 Comments

This is a very basic overview, of some subjects that seem to cause misunderstandings and elements of confusion for some people.
Sound is caused by an object vibrating and causing repeated compression and rarefaction of the air. These pressure waves impact on our eardrums and cause them to vibrate, sending small electrcal impulses to our brain. The same happens with a microphone, a small diaphragm vibrates with the pressure waves and converts the vibration into electrical signals.

Illustration of sound/pressure waves in air.

Volume, loudness or Amplitude:

The difference between the compression, and the rarefication of the air determines low loudly we percieve the sound. The greater the difference in pressure the louder the sound. Sound level is expressed as dB, the following list is a guide to loudness levels to give an idea of what this means to us;
0 dB – The softest sound a person can hear with normal hearing
10 dB – Normal breathing
20 dB – Leaves rustling, a ticking watch
30 dB – A whisper
40 dB – Refrigerator hum, a quiet office
50 dB – Moderate rainfall
60 dB – Normal conversation, dishwashers
70 dB – Vacuum cleaners, traffic
80 dB – Police car siren, a noisy restaurant- the level at which hearing damage can be caused by prolonged exposure.
90 dB – Hairdryers, blenders, power tools
100 dB – Motorcycles, hand dryers
110 dB – Nightclubs, sporting events
120 dB – Thunder, concerts, a jet plane taking off
130 dB – Jackhammers, ambulances
140 dB – Fireworks, gunshot.
Note: dB as a measurement does not relate in any real sense to voltage or wattage, it is really just a measurement of relative sound or signal levels, it’s really not as simple as saying for example that 100 watts of amplifier power output is equal to 80dB.

Frequency or pitch:

The spacing between the pressure changes determines the pitch, or frequency of the sound we hear. The closer together these pressure changes are the higher the pitch we hear. The human ear can detect these pressure changes when they fall between 20 times per second (20Hz), and 15 000 times per second (15kHz) and the upper limit of audibilty varies between each person. Pitch is the frequency translated into musical terms.

Harmonics:

In the image showing pressure waves and how they relate to a sound, we saw a sine wave, this is a pure audio tone of one frequency. There are few (if any, excluding a synthesizer) musical instruments that produce a true sine wave. There will be a fundamental frequency. This is what we hear as the pitch of the instrument, as an example we will use standard A or 440 Hz. Below is our 440Hz sine wave and its frequency spectrum.

A pure 440 Hz sine wave, note how there is only the fundamental frequency, and no others.

We may have an instrument that has a tone made up of the pitch we hear 440Hz, but it has other components. In most instruments such as a flute these will be directly related to our 440Hz pitch. They will be what are called Harmonics, and in most cases they will be at frequecies such as;
440 * 2 = 880 Hz which is the 2nd harmonic,
440 * 3 = 1320 Hz 3rd harmonic,
440 * 4 = 1750 Hz 4th harmonic,
440 * 5 = 2200 Hz 5th harmonic.
For each harmonic we multiply the fundamental frequency by the harmonic number, not the preceeding harmonic.
These harmonics will almost always be at a lower level than the fundamental.
I have used these as an example below with decreasing levels, you can see the effect on the waveform.

The effect of adding harmonics to a sine wave.

In the example below the 4th harmonic has been increased in level above the 3rd harmonic you can see how this has affected our waveform, this will have noticable changed the timbre of our sound but not the percieved pitch, as this is still the strongest of all the pitches.

The effect of incresing the strength of the 4th harmonic.

If we go as far as the 10th harmonic, then we can get a rough approximation of a sawtooth, with a bit of juggling with the levels.

Adding odd & even harmonics to produce a crude sawtooth

And by some juggling with the odd harmonics (3,5,7, & 9th) keeping the even harmonics low a crude approximation of a square wave.

Adding only odd harmonics produces a rough looking square wave.

Further juggling with even harmonics (2,4,6,8 & 10th) can get a wonky Triangle shaped wave.

Adding only even harmonics creates a wobbly looking Triangle wave.

Why are the harmonics so important? Where do they come from in physical instruments?

Why are these harmonics so important? Without getting too technical, and going deep into the theoretical side, musical instruments are usually a resonant string or tube (Very much over-simplified, but close enough). If we take a string and pluck it we will get a strong vibration the pitch of which is defined by the length of the string. However the string will also have other modes of vibration related to it’s length.

How harmonics relate to a string or pipe length. — How harmonics relate to the size of a string (or pipe)

Each of these is added to the fundamental, in decreasing amounts relating to a range of variables such as; string tension, string diameter, the materials in the string, how hard the string is plucked, and what the ends of the string are attached to (Not to mention the shape and size of the body of the instrument etc). The same principle applies to woodwind and brass instruments. The science of acoustic instruments and analysing or predicting the sound they produce needs some complex mathematics.
Where things get strangely different and eye wateringly complex is with percussion instruments…but that’s another very, very complex subject.

The complete science and analysis defining the sound produced by even a very simple physical musical instrument is very complex and requires a lot of complex maths.

What about Phase? What is it?

In the screenshot below we have two sine waves of the same frequency.

Two sine waves in phase (0 degrees phase difference).

See how they both start on the same part of the sine wave’s cycle. These are in phase, there is no time difference between them, and they have a phase difference of 0 degrees.. If you add the two waves together you’ll get another sine wave only twice the amplitude. 5+5 = 10, (-5) + (-5) = -10.
In the screenshot below the two sine waves are out of phase, and have a phase difference of 180 degrees. You can see that the two waves have cancelled each other. (+5) + (-5) =0.

Two sine waves out of phase. — Two sine waves out of phase, with 180 degrees phase difference.

When they are 90 degrees out of phase you get a partial addition of 5 + 2.5 = 7.5, and (-5) + (-2.5) = -7.5.

Two sine waves with 90 degrees phase difference. — Two sine waves out of phase by 90 degrees.

So if the phase between these two sine waves was to vary slightly over time you would get a “beating” effect as the two alternaltely fade between adding and cancelling. This is in effect what is happening when you have two sine waves of slightly different pitches, if the difference between the two sine waves is 0.5 Hz, then you would get a beating effect where the signals would fade between adding and cancelling every two seconds

"Beating" effect created by slight regular variations in phase, or a slight difference in frequency. — “Beating” effect created by slight regular variations in phase, or a slight difference in frequency.

The importance of phase and phase shift.

These effects caused by phase are very important to us in electronic music production, as phase differences can be used for positioning instruments in the stereo field and introducing changes to the harmonic structure (timbre) of the sounds. The effects apply equally to electronic audio signals and acoustic audio waves that you hear from a loudspeaker.
Note: Phase is not audible as such until we introduce a second audio signal into the mix where it will immediately change the timbre of the audio. If you have a single audio signal and vary its phase, you will not hear any difference, unless you were to take the original audio and mix it with the phase shifted audio, once you do this you’ll get a frequency notch where the two signals subtract from each other (the classic phasing effect). Small variations in frequency however are immediately obvious to most listeners without any second signal to refer to (unless you are totally tone-deaf).
An exception to the rule of phase changes being inaudible.
There is however an exception to phase changes not being audible: if a very deep and rapid change is made to the phase of an oscillator, you will get something called Phase Modulation or Phase Distortion, where this actually distorts the shape of a sine wave. This effect has been used to great effect notably in Casio CZ (Phase Distortion) and Yamaha DX FM synthesizers (strictly speaking this should be PM or Phase Modulation) synthesizers for example…but thats another complex subject. Just as an illustration in the image below the yellow trace is a 440 Hz sine wave with no phase changes, the green trace is a 440 Hz sine wave with a 10% shift in phase being applied by an 880 Hz sine wave.

The effect of Phase Modulation at audio rates. (440 Hz sine wave with 10 % phase modulation using an 880 Hz sine wave)

Phase and audio Mixing.

Phase is also important when it comes to converting a stereo signal to a mono signal. What sounds great in stereo may if there is a phase difference between left and right channels the mono audio will sound totally different, and may have a band of frequencies that are cancelling out boosting some frequencies and cutting others. It can also sound like a comb filter (flanger) being applied without any variation in the flanger delay time. All that careful mixing and equalization is quickly ruined. This could even be outside your control… music heard on a radio may not be heard in stereo for example.
This is where phase shift can become vital in tone control and equalizer plug-ins.

Harmonic Filter.

09/01/2026 / Stephen / 0 Comments

What is the Harmonic Filter?

I can’t claim any orginal thinking on this idea. It was inspred by reading a PDF I found online.
Credit must go to:
Jae Hyun Ahn and Richard Dudas.
Center for Research in Electro-Acoustic Music and Audio (CREAMA).
Hanyang University School of Music.

The Idea is that you use either chained or nested comb filters to change the Harmonic spectrum of an audio signal.
Notes:
1) White and Pink noise just sounds like white noise put through a rather odd flanger.
2) The more harmonics the input waveform has, the more extreme the end result is. A sine wave will (apart from at resonance) still sound like a sine wave. As you increase the harmonic content things become more noticeable.
3) If you put the audio through a waveshaper and use extreme shaping levels the effect of this filter can become very strange.
4) Important. Beware of high feedback levels.
The concept is that with positive feedback in the delay line certain frequencies will be enhanced, and with negative feedback certain frequencies will be cancelled. By putting an offset on the frequency of either the posistive or negative feedback filters we can further change the harmonic structure. The diagram below shows the audio spectrum using negative feedback at the top, and positive feedback at the bottom. You can clearly see that one results in sharp notches removing frequencies (-ve), and the other results in sharp peaks (+ve) enhancing other frequencies.

These screenshots will help to show some of the effects on a sawtooth signal:
First the unfiltered classic spectrum of a 440 Hz sawtooth

Then with 60% feedback, the filters set to 1kHz, and no offset.

And with the same settings, but a +ve offset added to the +ve feedback comb filters.

You can see that by these changes to the comb filters the harmonic spectrum can be changed.
The sound the project produces (although I call it a filter) is quite unlike any other filter in the ususal synthedit modules. This is because we are boosting and cutting harmonics, rather than just cutting out frequencies, and also not always keeping these boosts and cuts harmonically related.
In the screenshots below using white noise as an audio source you can clearly see the peaks and troughs in the filter output, first with no comb filter offsets, then with a 200 Hz comb filter offset. The greater the feedback used in the comb filters, the more pronounced and narrower the peaks become.

The harmonic filter output spectrum with no comb filter offsets.

The harmonic filter with a 200Hz offset on the second comb filter chain,
notice the new peaks appearing in the spectrum offset from the original peaks.

Note: For the curious amongst my readers, as an experiment I tried setting all comb filters with the same feedback polarity and testing. This does not produce the same results as having a 50/50 positive and negative feedback comb filter setup. It just produces a high level output with very wide single peaks and troughs. The 50/50 mix of positive and negative feedback are essential for this filter to work correctly. I found no benifit in changing this mixture of feedback, in fact the opposite was true.

Constructing the Harmonic Filter.

This project uses a third party module.
The Filter wet/dry mixing uses the ED Morph 1D module. You could substitute the stock X-Mix module.
This is the basic structure, the Quad comb filter is a container, the structure of this is shown underneath the main structure.
Pitch control minimum and maximum values: Minimum = 0.5 Maximum = 5.
Offset values: Not critical, but +/- 0.3 is a good starting point, this corresponds to a shift of +/- 300Hz.
Feedback: A range of 0 to 7.5 is adequate, I would give 8 as the absolute maximum, don’t be tempted to go to 10, it will Oscillate very loudly.
Notes: The Freq Analyser2 module was for testing and showing the effect of the filter on the frequency spectrum, it can be removed if you want to. Likewise the Audio container is just for testing.

All the Delay2 modules should have a Delay Time of 0.05 Seconds set in the properties panel (otherwise you get some very strange and unmusical things happening).
The two negative feedback filters have the same feedback level, as do the positive feedback filters. The Negative feedback filters get their feedback from the same control slider, they just have the value inverted so if the positive filters are set to +7, the negative filters are set to -7.
The Frequency (delay) offset is applied to both the positive feedback filters, but not the negative feedback filters.

1 Pole High Pass Filter.

05/01/2026 / Stephen / 0 Comments

This is aimed specifically at the stock 1 Pole High Pass Filter. What it is and what it’s useful for.

What is the 1 Pole HPF useful for?

Although it doesn’t have a steep cut off slope, and has no feedback/resonance control, this filter still has it’s uses. The idea of this filter is that all frequencies below the cutoff (pitch) frequency are attenuated by 6dB for every octave below the cutoff frequency. If for any reason you need a steeper cutoff slope just combine two or more in series. The only settings of note are;
Frequency Scale (Properties): Set to either 1 V/Octave or 1V/kHz.
Pitch: The cutoff frequency. Below this frequency the audio is attenuated with a slope of 6 dB/Octave.

1 DC Blocking.

Some structures may, due to the way they work may generate a DC component in their output audio. An example of this could be a waveshaper. This is undesirable as it can cause all sorts of issues such as assymetric clipping.
If you have an audio signal output at +/-5 volts peak to peak, and you have a +3 volts DC component, your +ve peal voltage is going to be 8 volts rather than 5, and if a sudden increase in audio occurs then you’ll quickly hit the +10 volts maximum for audio, and run into harsh, digital clipping. In the example below you can see where I have used (albeit a rather extreme wavshaping shape) a waveshaper and there is a noticeable peak showing at 10 Hz, which on it’s own could cause some audio issues, but also if you look at the voltmeter on the signal out plug of the wavehsaper we have 2.061 volts DC, which is exactly what we want to avoid. At the output of the 1 pole HPF (which I set to 100 Hz) however the 10 Hz peak in the spectrum is gone along with some others being much reduced, and we also lose that 2.061 V DC component.

Illustration of DC blocking with a high pass filter.

2 Effects such as Reverb.

Effects such as Reverb, Echo, Phasing and Chorus all sound much better if we apply a high pass filter to the audio input of the effect, it will sound much cleaner if a wide range of frequencies is being fed into the effect. Allowing lower bass (below 100- 200 Hz) frequencies into Reverb and Echo quickly makes the sound muddy, or even overpower the higher frequencies.

3 EQ and Mixing Plugins

There are several uses here, getting rid of low frequency rumbles, and hum which can quickly overwhelm a mix, or cause clipping. Use of High Pass filters on some instruments can also improve the clarity of a mix when used well.
Always include high pass filtering in any Mixer VST, Mixer Channel Strip VST etc.

DAM Chorus module.

05/01/2026 / Stephen / 0 Comments

The only third party module used in this project is the Chorus module itself.

The DAM Chorus Module plug layout.

Most of it is fairly self explanatory.
Mod depth: The maximum and minimum are 0 to 100, (that’s right 100 it’s not an error), this is the amount of modulation applied to the chorus delay time.
Mod Phase: Changes the phase of the modulation signals between Left and Right channels for stereo effects.
Width: Controls the Stereo Width.
Damp: Controls the amount of HF Damping. 10 = None, 0 = Maximum damping.
Feedback: Allows feedback in the signal path, this produces more of a Flanger type effect than Chorus at higher levels. Note: Some people seem to be confused by negative feedback, all this means is that the feedback is out of phase with the original signal, whereas the normal (positive) feedback we encounter is in phase. This changes the audio spectrum noticeably.
LFO Shape: Changes the waveshape of the modulation LFO. There is a choice of;
Sine, 3 Sines, Triangle, Parabola, and Random modulation.

The Chorus module in operation.

1 Pole HP filters are included (I Used 100Hz cutoff, but it’s down to your personal preferences) this stops the sound from getting too “muddy”. Bass in a chorus effect often doesn’t sound too good.
I have included the Voice Combiner modules in the structure because, if for any reason the module is in a Polyphonic signal chain you will get distortion, and it also wastes CPU.
Note: Don’t expect to hear too much of a stereo effect if your left and right channels are carrying identical audio, if everything is identical (phase, frequencies, volume) you’ll still essentially get a centred (mono) audio output.

v1.5.664 – 2026-04-23

About the Complex Pulse Oscillator.

Combining the oscillator outputs.

Sub Oscillator.

Stepping up.

Pulse width.

Phase shift.

Structure of the Oscillator.

Related posts:

What are NAN and INF in SynthEdit?

Detecting INF and NaN values.

Related posts:

How the User Setting – Text module works.

Example “Skin” Setup.

Patch Automator module.

Emulate ‘Ignore Program Change’

What are SF2 Soundfonts?

Blue: SF2 Selection and Patch Loading

Red: SF2 Sample Oscillator.

Green: MIDI Control.

The FAQ section on Soundfonts from the SynthEdit website.

Distributing Soundfonts, Wave, and MIDI Files.

Relative Paths

Related posts:

Volume, loudness or Amplitude:

Frequency or pitch:

Harmonics:

Why are the harmonics so important? Where do they come from in physical instruments?

What about Phase? What is it?

The importance of phase and phase shift.

Phase and audio Mixing.

Related posts:

What is the Harmonic Filter?

Constructing the Harmonic Filter.

Related posts:

What is the 1 Pole HPF useful for?

1 DC Blocking.

2 Effects such as Reverb.

3 EQ and Mixing Plugins

The DAM Chorus Module plug layout.

The Chorus module in operation.

Related posts:

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