understanding some terms and theory

[Tony Clark]

> A wavetable just holds a certain ammount of samples for a given
> waveform, right?  So no matter what the playback frequency you're
> getting the same number of samples per period?
> 
> How is the number of samples determined and how is the number of 
> samples described?

   I'd imagine that it'd depend on the design.  For example there are a 
few designs that use a VCO to clock the wavetable.  In this form, the VCO 
drives an A/D converter, meaning there are as many samples as the bit 
resolution of the converter.  So, 8-bit A/D, 256 samples.  Neat and 
compact but not very practical for polyphonic machines unless you want a 
hybrid analog/digital VCO scheme (and who wouldn't?!).
   I have no idea how PPG/Waldorf did/does theirs.  Probably very similar 
to standard sampling technology?

   Tony

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