Doepfer A-198 Trautonium / Ribbon Controller - Manual (Page 7)

doepfer System A - 100 Trautonium / Ribbon Controller A-198
7
Fig. 3: “Sound of a hand passing over a wineglass”
P By means of the CV-to-MIDI Interface A-192
the output voltages of the A-198 can be
converted into any MIDI Controller (for de-
tails see A-192 user's manual).
The patch in fig. 3 simulates the sound of a hand
passing over a wineglass. The position control voltage
defines the pitch of a the VCOs. The position gate
signal triggers the ADSR that controls the loudness
progress of the sound.
With the ring modulator and suitable settings of the
mixer, LFO frequency, filter frequency and resonance
the typical bell-like sound is generated. The LFO provi-
des the vibrato. Optionally the filter frequency can be
controlled by the pressure voltage.
With different settings of the mixer and the filter metal-
lic sounds are generated. In combination with fast
envelopes one obtains percussive sounds that remind
of hitting or plucking a string.
Ring
Mod.
CV
Contr.
Board
A-198
CV
VCA
ADSR
Ribbon Sens or
V CF
A udio
Out
V CO
Gate 1
Pit ch
Mix er
Pre s s ur e
Pos it ion
V CO
LFO