[sdiy] Theremin tone/waveform' question

[Justin Owen]

-----Original Message-----
From: Paul Perry [pfperry at melbpc.org.au]

>Looks like a saw wave VCO with a CV input for pulse width modulation could
do the job, if you vary the PWM suitably with frequency.. Maybe with a low
pass filter to roll off the upper harmonics.

Hmmm - that is interesting. Not being near an oscillator that I can test this on - can I ask if 'modulating' the PWM using a a signal at audio frequency would have a similar effect as an FM input - but obviously on pulse-width rather than pitch?

Thanks

J