Doepfer A-127 Triple VC Resonance Filter - Manual (Page 10)

A-127 Triple VC Resonance Filter System A - 100 doepfer
10
fig. 5: Simulation of vowel sounds
Otherwise, three vowel formant frequencies can be
produced using either a MAQ 16/3 sequencer, with
three control voltages per step, or by running two
A-155 sequencers in parallel. In this case, you could
use the spare CV from the second A-155 for pitch
control (instead of an external keyboard) or to produce
different decay times, by using a VC-ADSR instead of
a standard ADSR.
1 2 3 4 5 6 7 8
VCO
Clock
Trig. 1
Post Out 2
A-155
Post Out 1
ADSR
VCA A-127
ext. CV 1 2
Mix
Out
CV