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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In 1979, Roland released the VP 330 ensemble/vocoder keyboard.<br />
The late 1970s and early 1980s were the heyday of the vocoder. Artists who used them included<br />
ELO, Pink Floyd, Eurythmics, Tangerine Dream, Telex, David Bowie, Kate Bush, and many more.<br />
On the production side, vocoders could—and can still—be picked up cheaply in the form of kits<br />
from electronics stores.<br />
From 1980 to the present, EMS in the UK, Synton in Holland, and PAiA in the USA have been—<br />
and remain—the main flyers of the vocoding flag.<br />
In 1996, Doepfer in Germany and Music and More joined the vocoder-producing fraternity.<br />
From the late 1990s to the present, a number of standalone and integrated software-based<br />
vocoders—like the EVOC 20—have appeared.<br />
EVOC 20 block diagram<br />
This block diagram illustrates the signal path in EVOC 20 TrackOscillator and EVOC 20 PolySynth.<br />
Analysis section<br />
Analysis<br />
source<br />
Track<br />
------------<br />
Side chain<br />
R L<br />
Stereo to mono<br />
Legend<br />
Audio signal<br />
Control signal<br />
Parameter control<br />
TO:<br />
pitch analysis<br />
Sensitivity<br />
U/V<br />
detection<br />
Frequency range between highest/lowest<br />
1-5<br />
Filter bank with five bands<br />
(example)<br />
A<br />
Envelope<br />
follower<br />
1-5<br />
Freeze<br />
B<br />
Synthesis section<br />
TO:<br />
Max/Quant./<br />
Glide<br />
Noise,<br />
N + Synth<br />
Voltagecontrolled<br />
Oscillator 1-5<br />
Blend<br />
Level<br />
Synthesis<br />
source<br />
EVOC20 TO:<br />
Tracking oscillator<br />
Track or side chain<br />
EVOC20 PS:<br />
Poly synth<br />
Filter bank<br />
input<br />
Filter bank with five bands<br />
(example)<br />
Level<br />
Stereo<br />
width<br />
PS:<br />
MIDI<br />
keyboard<br />
pitch<br />
LFO<br />
LFO<br />
Shift<br />
Stretch<br />
L<br />
Resonance<br />
R<br />
Chapter 8 EVOC 20 PolySynth 156