DigiDesign Bomb Factory, Manual

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Bomb Factory Plug-ins Guide 34
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 con-
tains a 100 Hz sine wave, then the output con-
tains a 600 Hz sine wave (500 plus 100) and a
400 Hz (500 minus 100) sine wave.
How the Moogerfooger Ring
Modulator is Used
LFO Section
Control the LFO using the Amount and Rate
knobs and the Square/Sine waveform selector
switch.
Amount determines the amount of LFO wave-
form that modulates the frequency of the carrier
oscillator. When the knob is full counterclock-
wise, the carrier is unmodulated. Fully clock-
wise, the carrier oscillator is modulated over a
range of three octaves.
Rate determines how fast the LFO oscillates,
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.
The Square/Sine switch selects either a square or
sine waveform. The square wave produces trill
effects, whereas the sine waveform produces vi-
brato and siren effects.
Modulator Section
The Carrier Oscillator is controlled by the Fre-
quency knob and the Low/High switch.
In the Low position, the Frequency knob ranges
from 0.5 Hz to 80 Hz. In the High position, the
Frequency knob ranges from 30 Hz to 4 kHz.
Operating at the selected frequency, the carrier
oscillator provides one input to the ring modu-
lator, with the other coming from the input sig-
nal.
Audio Input and Mixing
The Drive control sets the input gain.
The Mix control blends the input signal and the
Ring Modulator output. You hear only the input
signal when the knob is counterclockwise, and
only the ring modulated signal with the knob
fully clockwise
LED Indicators
Three LEDs provide visual feedback. Level glows
green when signal is present. LFO blinks to show
the LFO rate. And Bypass glows either red (by-
passed) or green (not bypassed) to show whether
or not the effect is in the signal path.
Tips and Tricks
A Little Goes a Long Way
You’ll discover tons of great uses for the Mooger-
fooger Ring Modulator through experimenta-
tion. But don’t forget to try using it in subtle
ways, adding “just a hint” to harshen up or add
a metallic quality to individual tracks buried in
the mix. Almost all the great MOOG sounds fea-
ture subtle, clever uses of Ring Modulation.