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Chapter 8 EVOC 20 PolySynth 144
EVOC 20 PolySynth lter parameters
The Synthesis section includes a lowpass lter that is used for coarse signal shaping, before the
signal is more precisely shaped by the individual bands of the formant lter banks.
Filter parameters
•
Cuto knob: Rotate to set the cuto frequency of the lowpass lter. Turn to the left to remove
high-frequency content from the synthesizer signal.
•
Resonance knob: Rotate to boost or cut the signal portion that surrounds the frequency
dened by the Cuto knob.
Tip: Set cuto as high as possible, then adjust resonance to achieve a brighter high-end signal.
This is useful for achieving better speech intelligibility.
EVOC 20 PolySynth envelope parameters
EVOC 20 PolySynth includes an Attack/Release envelope generator that controls the levels of the
oscillators over time.
Envelope parameters
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Attack slider: Drag to set the time it takes for the oscillators to reach their maximum level.
•
Release slider: Drag to set the time it takes for the oscillators to reach their minimum level, after
the keys have been released.