[sdiy] RE: Polyphonic synthesizer (controlling with vactrols)

[Don Tillman]

   > From: "Paul Maddox" <Paul.Maddox at Wavesynth.com>
   > Date: Mon, 22 Apr 2002 21:00:17 +0100
   > 
   > >For waveforms such as sawtooth, square and triangle, software
   > >oscillators are hard. If the frequency is not a whole
   > >submultiple of the sample rate, aliasing occurs.    > >are 400 harmonics).
   > 
   > not so...
   > use Phase accumulator oscillators and a simple waveform lookup..

Page 3 of Tim Stilson's article explains the aliasing problem with
simple waveform lookup.

I think Tim's approach is very cool.  I haven't heard of it being used
anywhere commercially though.

  -- Don

-- 
Don Tillman
Palo Alto, California, USA
don at till.com
http://www.till.com