Octave synthesis on a PIC microcontroller

[Minerva Research Ltd.]

>congratulations..... but what i would really like to see is a PIC based
>exponential convertor so we can just make linear osccillators and voltage to
>current convertors
>and forget ovens & matched transistors.... just the one exponential
>convertor with a couple of hex sample& hold chips & thats the nastiest
>partof a synth gone.....
>

Yes! I've been pondering this solution for over a year now (haven't had the
time to do more, alas). Seems like such an obvious way to tackle the
problem, I've been trying to figure out what the downsides that I haven't
thought of could be.