[sdiy] MonowaveII demo sounds up

[Hermann Seib]

Paul, 

> > Did PPG Wave have analog oscillators that controlled when 
> > to output a new sample from the wavetable?
> > Or were they digital and what was the sampling frequency?
> 
> they were digital and they had a variable asmple rate.
> The always played 128 samples per waveform, so if you played 
> a 50hz note you
> got a sample rate of 6.4Khz, play a 1Khz note and you got 
> 128Khz sample rate.

NonononoNO. As I already oh so elaborately showed on the PPG mailing list,
the PPG Wave calculates the current sample for each voice at roughly 170kHz.
Of course, since a wave cycle consists of 128 discrete values, and there's
no interpolation, this _looks_ like a variable sample rate if viewed with an
oscilloscope.

Bye,

  Hermann