3.5

142MainStage Effects
MainStage EVOC20 TrackOscillator analysis in controls
The parameters in the Analysis In section determine how the input signal is analyzed and
used by EVOC20 TrackOscillator.
Analysis In parameters
• Attack knob: Determine how quickly each envelope follower—coupled to each analysis
filter band—reacts to rising signals.
• Release knob: Determine how quickly each envelope follower—coupled to each analysis
filter band—reacts to falling signals.
• Freeze button: Hold the current analysis sound spectrum indefinitely. When Freeze is
enabled, the analysis filter bank ignores the input source, and the Attack and Release
knobs have no effect.
• Bands field: Set the number of frequency bands analyzed and then used by the
synthesis engine. Up to 20 bands can be used.
• Analysis In pop-up menu: Choose the analysis signal source.
• Track: Uses the input audio signal of the channel strip the EVOC20 TrackOscillator
is inserted into as the analysis signal.
• SideCh(ain): Uses a side chain as the analysis signal. You choose the side chain
source channel strip from the Side Chain pop-up menu in the upper-right corner of
the plug-in window.
Note: If Side Chain is chosen and no Side Chain channel strip is assigned, the EVOC20
TrackOscillator reverts to Track mode.
Set Attack and Release times in EVOC 20 TrackOscillator
• In MainStage, rotate the Attack and Release knobs to set times that provide the most
articulated sound.
Longer attack times result in a slower tracking response to transients—level spikes—
of the analysis input signal. A long attack time on percussive input signals, such as a
spoken word or hi-hat part, translates into a less articulated vocoder effect. Set the
Attack parameter to the lowest possible value to enhance articulation.
Longer release times cause the analysis input signal transients to sustain for a longer
period at the vocoder output. A long release time on percussive input signals, such as
a spoken word or hi-hat part, translates into a less articulated vocoder effect. Use of
extremely short release times results in rough, grainy vocoder sounds. Release values
of around 8 to 10ms are useful starting points.