Specifications

Chapter 57: Moogerfooger Ring Modulator 281
Chapter 57: Moogerfooger Ring Modulator
The Moogerfooger Ring Modulator that pro-
vides a wide-range carrier oscillator and dual
sine/square waveform LFO and is available in
TDM, RTAS, and AudioSuite formats. Add mo-
tion to rhythm tracks and achieve radical lo-fi-
delity textures—you set the limits!
How the Moogerfooger Ring Modulator Works
Like the Lowpass Filter, the Moogerfooger Ring
Modulator has its roots in the original MOOG
Modular synthesizers. It provides three classic
MOOG modules: a Low Frequency Oscillator, a
Carrier Oscillator, and a Ring Modulator.
Low Frequency Oscillators (or LFOs) create slow
modulations like vibrato and tremolo. The LFO
in the Moogerfooger Ring Modulator is a wide-
range, dual-waveform (sine/square) oscillator.
The Carrier Oscillator is a wide-range sinusoidal
oscillator. It’s called the Carrier Oscillator be-
cause, like the carrier of an AM radio signal, it’s
always there, ready to be modulated by the in-
put.
A Ring Modulator takes two inputs, and outputs
the sum and difference frequencies of the two
inputs. For example, if the first input contains a
500 Hz sine wave, and the second input contains
a 100 Hz sine wave, then the output contains a
600 Hz sine wave (500 plus 100) and a 400 Hz
(500 minus 100) sine wave.
Moogerfooger Ring Modulator
Controls
LFO Section
Control the LFO using the Amount and Rate
knobs and the Square/Sine waveform selector
switch.
Amount Amount determines the amount of LFO
waveform that modulates the frequency of the
carrier oscillator. When the knob is full counter-
clockwise, the carrier is unmodulated. Fully
clockwise, the carrier oscillator is modulated
over a range of three octaves.
Rate Rate determines how fast the LFO oscil-
lates, from 0.1 Hz (one cycle every ten seconds)
to 25 Hz (twenty-five cycles per second). The
LFO light blinks to give a visual indication of the
LFO rate.
Moogerfooger Ring Modulator