Doepfer A-129-3/4 Vocoder Slew-Limiter/Attenuator/Offset and Controller - Manual (Page 8)

A-129 /3/4 Modular Vocoder System A - 100 doepfer
8
Further adventures in vocoder control
Using the layout in Fig. 4 (and also not forgetting
the tips and suggestions for experimentation in the
A-129 /1 and A-129 /2 manuals), you should be
able to produce all the most widely-used vocoder
effects. By patching in other modules, though, you
should be able to go ‘one step beyond’.
For a start, the voltages for the synthesis section
don’t have to come from the analysis section.
Possible choices for modulation sources from
which to control certain channels within the voco-
der might include:
• ADSRs (A-140, A-141) for envelope control of
timbres
• LFO's (A-145, A-146, A-147) for strange repea-
ted vocal timbres
• Sample-and-hold (A-118) for random vowel
sounds
• Shepard-Generator (A-191) for continuous filter
effects
• Using an A-191 to control various vocoder
channels via MIDI - for instance aftertouch or
velocity.
LP
BP 1
BP 2
BP 12
BP 13
HP
LP
BP 1
BP 2
BP 12
BP 13
HP
A-129 /1 A-129 /2
Voc.
Out
Speech
In
Instrument
In
Offset
Slew Contr. In
Atten.
CV
In 1
A-129 /4
CV
Out 1
Freeze
Contr.
Input
Slew
CV
Follow
Slew
Freeze
Man.
Slew
Rate
Slew Control
Out
A-129 /3
Abb. 4: Basic set-up for the A-129 /3 and A-129 /4