Parallel Filtering

The title says most of it really. We can take a single sound source and split it to feed two filters which are independent of each other (separate controls and modulation inputs). You can use this to provide a “pseudo stereo” effect where the left and right channels have different filtering. Low pass on the left, and high pass on the right. Different polarities and rates of modulation can create some interesting stereo swirling and rotation style effects. Of course there is no need to have both filters fed by the same sound source, if you want they can be two different sound sources. You can mix and match types of filter too. There’s no reason why you should not have a Moog low pass in the left, and a State Variable in the right channel.