Is that basically amplitude modulation? Sounds more or less like a ring modulator, but with more of the original signal and carrier getting through.
wouldn't amplitude modulation be a tremolo? no, it's a sample and hold. there are two buffers with a fet switched by a really fast clock in the middle. when it's switched off a small capacitor holds the signal where it was which is held by the buffer. this in effect makes the wave have a ladder and sound like a low bitrate digital signal (atari)
Ok I'm familiar with S/H circuits from synths. So then the more frequently the sample and hold samples, the greater the number of amplitude levels it is representing, similar to the number of amplitude levels represented by different bit resolutions in digital audio... just that in this case, they are probably not fixed to exact corresponding fixed amplitude depths/voltages, like they would be in digital.
I can see how that would work.