[sdiy] dumb wavetable question

[Olivier Gillet]

> Why not clock the wavetable with an analog clock driven by a conventional
> expo converter?  Of course, the tracking would only be as good as the
> exponential converter, but the wavetable could now be clocked with a plain
> old binary counter, and the frequency would always be equal to the analog
> clock frequency divided by the number of wavetable samples.  Since it's
> analog, it could be glided and detuned smoothly, just like any other VCO.
> Of course, you'd still need a MIDI-to-CV converter to control it digitally,
> but that could be built in.

Or even simpler : use an ideal sawtooth VCO, scale it to 0-5V, pass it
into an 8-bit parallel ADC, and feed the 8-bits of ADC output as an
address to an eeprom (the other bits being controlled by the wavetable
selector). Bonus : any defect in the sawtooth turns into lovely phase
distortion.

I bet that's what all the "wavetable player" modules do. In this case
it sounds more like table-based waveshapping...