Having some control over the waveshaper (although not over the actual transfer curve in the module) is possible in as far as the depth of the shaping effect, and the polarity of the shaping effect can be voltage controlled using a few stock modules, and one extra from Elena Novaretti’s module packs at www.elenadesign.eu, the ED Range Clipper which limits the amount by which the control voltages can be varied- this is used to prevent the control voltage exceeding the normal range for the waveshaper and causing unpredictable results.
The Intensity (or depth) of the effect can be varied between 0 V (minimum shaping) and 10 V (maximum shaping). This is then fed to the X-Mix module directly to Input B, and through an Inverter2 module to Input A. This allows us to effectively change the polarity of the waveform, which is then added to the Input audio at the final Level Adj module.
Of course you’re not limited to just using the Waveshaper3 module, you could just as easily use the Waveshaper2 module and use a formula for the transfer curve.
So far this is the best I have been able to come up with, but I’m as always going to keep experimenting so “watch this space” for updates on this technique
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