Wednesday, May 03, 2017

Moog Model 15 AM Amplitude Modulation DEMO


Published on May 3, 2017 Roberto Raineri-Seith
Update: original video was pulled and re-published.

"Moog Model 15 AM / Amplitude Modulation DEMO

Amplitude Modulation provides results similar to Ring Modulation and was / is an alternative technique to produce those distinctive timbres on the Moog modulars that didn't feature a Ring Modulator. Of course it works with any other modular system with at least 2 VCAs. Delay and reverb added.

The basic patch shown in the video can be found at page 127 of the Moog Modular Synthesizer owner's manual (2015 re/edition) and is as follow:

VCO 1 signal out to VCA 1 signal input with fixed control voltage (gain) raised to about 40%; VCO 2 signal out to VCA 2 CONTROL (frequency) input; VCA 1 signal out to VCA 2 signal in; VCA 2 signal out to amplifier;

Of course you can also send the VCA 2 signal out to the 907A or 904A filters and then to the amp"

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