[sdiy] sequential multitrack schematics.

[Rainer Buchty]

>You can't use a saw or triangle... it would discrete switch them
>anyway, internally.  If the DC points of each wave were different, the
>result could be nasty.

If I read the CEM3396 datasheet correctly, you need to keep track of 
frequency, pulse width, and selected waveforms. Hence, modulating Vwf 
would give somewhat unexpected results anyway.

If you change the frequency, you will alter the waveform w/o also 
adjusting Vwf. Similarly, you need to adjust the pulse width when 
changing waveforms.

I wonder if there have been any non-uC-based synths using the CEM3396?

Rainer