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Table Of Contents
78 Chapter 6 Filter
Synthesis In Section
The parameters in section control various aspects of the synthesis signal.
 Synthesis In pop-up menu: Sets the synthesis signal source. The choices are:
 Oscillator (Osc.): Sets the tracking oscillator as the synthesis source. The oscillator
tracks the pitch of the analysis input signal. Choosing Osc. activates the other
parameters in the Synthesis section. If Osc is not chosen, the FM Ratio, FM Int, and
other parameters in this section have no effect.
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Track: Sets the audio track into which the EVOC 20 TrackOscillator is inserted as the
synthesis source signal.
 Side Chain (SideCh): Sets the Side Chain (another audio track) as the synthesis
source signal. You choose the Side Chain source track from the Side Chain pop-up
menu at the top of the EVOC 20 TrackOscillator window.
Note: If Side Chain is selected, and no Side Chain track is assigned, the tracks signal
is used as the synthesis source.
 Bands value field: Sets the number of frequency bands used by the
EVOC 20 TrackOscillator filter banks. The range is from 5 to 20. The greater the
number of bands, the more precisely the sound can be reshaped. Increasing the
number of bands also increases the CPU overhead.
Tracking Oscillator
The parameters in the Tracking Oscillator section control various aspects of the tracking
oscillator.
The FM tone generator for the tracking oscillator consists of two oscillators, each of
which generates a sine wave. The frequency of Oscillator 1 (the carrier) is linearly
modulated by Oscillator 2 (the modulator), which deforms the sine wave of Oscillator 1
to a waveform with a rich harmonic structure.
The FM Int control determines whether the tracking oscillators delivers a sawtooth
wave or the signal of an FM tone generator.