Re: Dalek voice circuit
Being an analogue synth addict, I have made many varieties of ring modulator for various modular synth projects but have only once made a specific “Dalek Voice” effects unit.
This was made as the voice box for my cousin’s life-size Dalek a couple of years ago and was exactly as Steve G4WCS suggested: a mic preamp with a bit of built-in clipping and a low frequency Wien bridge oscillator fed into a MC 1496 double balanced mixer and thence to a small power amp and speaker. Given the right intonation ( which my cousin can do very convincingly) and a bit of deliberate offset to the DBM, it sounds spot-on.
The various old Radiophonic Workshop devices used for the original 63-89 Dr Who series were replaced by a Moog ring mod effects pedal from 2005 onwards.
HTH
Pete
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