[sdiy] Vactrol-based ring mod?

[Paul Perry]

It's certainly possible to do ring mod with a vactrol, because I have used
an audio modulated light bulb & a cadmium sulphide photoresistor to send
(admittedly very low grade) audio across a room, many years ago.
So it should be a doddle, with a led!

True, the LDR lags will roll off the top end pretty fast, and the
characteristics of the LDR vary in a complex way with prior exposure - but
in a ring modulator, most of the weirdness will cancel out.

I don't think Buchla ever got the credit he deserved. He approached the
synth problem from the "what do we need to make a musically interesting
tool" angle, rather than a strictly engineering approach.

paul perry Melbourne Australia