[sdiy] CMOS Saw to Triangle Waveshaper (corrected URL)
Scott Gravenhorst
music.maker at gte.net
Sun Nov 4 16:10:22 CET 2001
=?iso-8859-1?Q?Ren=E9?= Schmitz <uzs159 at uni-bonn.de> wrote:
>At 15:28 04.11.01, you wrote:
>
>>True, and it does, but we also level shift an LFO that works
>>around zero sometimes. So a level shift pot could be added to=20
>>put it where you want it. Maybe need a transistor or an opamp
>>to help there. The LFO configuration I built interfaces
>>perfectly with your PWM circuit.
>
>Yes, right, the transistor in the PWM section does that. And it makes=20
>really no sense to shift the voltage down and then up again.=20
>It should work adding it into the PWM-summing gate. I assume thats what=20
>you're saying here.
Yes, I was *just* using it that way a few minutes ago.
I'm quite impressed with this whole thing, now that it's
all together and working. It's hard to pull away from
the keyboard controller now. 3 sound sources, 4 if you
count the square suboctave, with one being timbre
modulated (PWM). Just throwing the LFO at PWM sounds
very nice.
I guess it's time to stop playing it and build the soldered
hardware. Well, in a little while...
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