1/19/2008
Copyright
2005 – Tim Hoerning
32
Ring Modulator
•Same notional schematic as the Tremolo. Instead of LFO with variable depth, use audio freq with full amplitude. (may
be analog or digital)
•Output includes the sum and difference frequencies.
•Very non-musical effects. Sum and difference frequencies are not musically related to input.
•Spectrogram below shows a sine-wave major scale starting
at A=220Hz and the output
when mixed with a 400Hz fixed frequency.
x
Input
Output
Fixed
Input
Output
Musical Examples:
•Tapeworm - Pigface
