[sdiy] sequential multitrack schematics.

Harry Bissell Jr harrybissell at prodigy.net
Thu Sep 28 16:23:53 CEST 2006


I was understanding the idea would be to
modulate the waveform selection Cv (not the Vwf)

otoh I'm still leery of the idea

H^) harry

--- Rainer Buchty <rainer at buchty.net> wrote:

> >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
> 



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