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3 Æ 1 FM: Direct Linear Frequency Modulation of Osc. 1 by Osc. 3
When an Oscillator is used as a CV source for another VCO, it is called Frequency
modulation. Frequency Modulation effects can vary from vibrato or trill effects to
clangorous inharmonic sounds to rich timbres that evoke acoustic sounds. Linear
FM is the kind of Frequency Modulation used in classic FM synths.
GLIDE: Glide enables a glissando effect between notes. There is a switch on the left
hand controller panel that enables this effect. The knob labeled glide adjusts the
rate of glide. The glide can vary from a very fast to a very slow glide.
CONTROL INPUTS FOR THE OSCILLATOR SECTION: There are two inputs on the
back panel that accept CVs or expression pedals that affect the oscillator section.
They are labeled Pitch, and Wave. The Pitch input controls the frequencies of all
three oscillators. A one volt change of this voltage will change the pitch by
approximately one octave. The Waveform input controls the waveforms of all three
oscillators. A 5 Volt Change of this voltage will sweep the oscillator waveforms
through their entire range. Plugging in an expression pedal like the moogerfooger
EP-1 (ring = +5.5 supply to the pedal, tip =variable CV return) produces control
voltages from 0 V to +5 V at either control input.
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