Thanks for clarifying urs. So based on that it is a crossfaded frame system, which makes sense. The reason I asked was to see if Zebra 3 would use the same crossfaded frames or something different.It's funny how people still obsess over Saw-PWM.
The (visible) artifacts are only audible on very fast modulation - where some perceptional artifacts ("scratchiness" for lack of a better word) come in that are also present in the original hardware anyway.
(for the fun of it, I tired it in Z3, same as Zebralette 3. At normal PWM-style LFO modulation, the difference between a resolution of 800Hz vs 2kHz is inaudible, hence the visual artifacts are inaudible. At very fast modulation there's a slight difference and thus artifacts become audible.)
The main reason I wanted to try saw-pwm is that it sounds good and it's a good test for how good an interpolation algorithm is.
What you say about the original hardware isn't really true. It doesn't produce the same effect when modulated quickly, it sounds distinctly different but I know you already know this, since you implemented it for DIVA and it's obviously totally different which is clearly visible when comparing the waveforms.
Actually you got me thinking. Turning off the frame interpolation would actually fix this since you could then never get 50/50 frames. It might work better for my case. I'll try it.
I love Zebra so thanks for all you do. I'm looking forward to v3 a lot. Thanks.
Statistics: Posted by e-theory — Tue Mar 11, 2025 9:08 am