Today we are focusing on a concept called Wave Folding.
Pioneered by Don Buchla (west coast synthesis) , Wave Folding is a form of wave shaping that literally folds the edges of a wave inwards on itself until the wave starts compressing creating distortion.
Wave Folding is a unique way to create complex sounds with strange harmonics from simple waveforms.
Additional variables, sometimes called offset, add a positive or negative voltage bias and shift the center point of the input signal up or down to create a form of non-linear distortion.
Below is a video example of the STG Soundlabs Wave Folder with the changes to the waveform being represented by an oscilloscope