User Guide

224 Chapter 15 EVOC 20 PolySynth
Block Diagram
This block diagram illustrates the signal path in the EVOC 20 TrackOscillator and
EVOC 20 PolySynth.
Tips for Better Speech Intelligibility
The classic vocoder effect is very demanding, with regard to the quality of both the
analysis and synthesis signals. Furthermore, the vocoder parameters need to be set
carefully. Following, are some tips on both topics.
Analysis
source
Track
------------
Side chain
LR
Stereo to mono
TO:
pitch analysis
Sensitivity
TO:
Max/Quant./
Glide
Analysis section
Synthesis section
U/V
detection
PS:
MIDI
keyboard
Noise,
N + Synth
Synthesis
source
EVOC20 PS:
Poly synth
pitch
Level
Frequency range between highest/lowest
1-5
Envelope
follower
1-5
A
B
Freeze
Stretch
Resonance
Shift
Filter bank with five bands
(example)
Level
Stereo
width
L
R
Filter bank
input
Filter bank with five bands
(example)
Voltage-
controlled
Oscillator 1-5
LFO
EVOC20 TO:
Tracking oscillator
Track or side chain
Blend
LFO
Parameter control
Legend
Audio signal
Control signal