Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
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The more bands a vocoder offers, the more precisely the original sound’s character will be<br />
reproduced by the synthesis filter bank. EVOC 20 PolySynth provides up to 20 bands per<br />
bank. See EVOC 20 block diagram on page 156 for a detailed image of the EVOC 20 PolySynth<br />
signal path.<br />
EVOC 20 PolySynth interface<br />
The EVOC 20 PolySynth interface is divided into six main parameter sections.<br />
Sidechain Analysis<br />
parameters<br />
Formant Filter<br />
parameters<br />
Output parameters<br />
Synthesis parameters<br />
Modulation parameters<br />
U/V Detection parameters<br />
••<br />
Sidechain Analysis parameters: Determine how the input signal is analyzed and used by the<br />
EVOC 20 PolySynth. See EVOC 20 PolySynth analysis parameters on page 140.<br />
••<br />
U/V Detection parameters: Detect the unvoiced portions of the sound in the analysis signal,<br />
improving speech intelligibility. See EVOC 20 PolySynth (U/V) detection parameters on<br />
page 141.<br />
••<br />
Synthesis parameters: Control the polyphonic synthesizer of the EVOC 20 PolySynth. See<br />
EVOC 20 PolySynth synthesis parameters overview on page 143.<br />
••<br />
Formant Filter parameters: Configure the analysis and synthesis filter banks. See EVOC 20<br />
PolySynth formant filter on page 149.<br />
••<br />
Modulation parameters: Modulate the synthesizer and filter banks—through two LFOs. See<br />
EVOC 20 PolySynth modulation parameters on page 151.<br />
••<br />
Output parameters: Configure the output signal of the EVOC 20 PolySynth. See EVOC 20<br />
PolySynth output parameters on page 152.<br />
Chapter 8 EVOC 20 PolySynth 139
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