It sounds like Doc has been inspired by Gordon Reid's
Synth Secrets column. If not, check out the March
2003 (and Feb.) issue of Sound on Sound. Lots of
background on PWM.
Doc spawned some ideas....
If you take a sample into the digi@l realm, you could
take every wave and either widen it or narrow it. Now
exactly how you do that is up for debate.
Mathematically there are several possibilities. To do
this in really time there would need to be a slight
delay so that one or two waves have been processed
before spweing out the massaged data.
The other idea is to expand and contract everything
locally. This would essentially be a pitch shifter
being modulated by something like an LFO. Running the
LFO into the audio range might have some nice
artifacts as a result.
If these are done digit@lly, this is a time when it
might be nice to have 24/96 available....
Cheers!
Shemp
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