A-191
MCV 16
System A - 100
doepfer
8
4.4 User examples
Modulation-rich synthesizer patch
The example in Fig. 2 shows a ‘classic’ synthesizer
patch:
2 VCOs
,
VCF
(A-122) and
VCA
(A-130). Modu-
les
A-190
and
A-191
act as the link to a
MIDI key-
board,
and are set to the same MIDI channel. The
THRU from the A-190 is connected to the MIDI IN of
the A-191.
This patch gives a
vast range of modulation possi-
bilities
accessible from velocity, mod wheel, pedals,
and aftertouch:
•
VCO 2 level
VCO 2’s amplitude level (ie. volume) can be con-
trolled with a pedal. In this example, the
A-190’s
second CV output (CV 2)
has been previously
programmed to respond to MIDI controller #04, but
CV output C4
on the
A-191
could have equally
well been used.
•
Modulation of VCF resonance
Filter resonance is modulated by a
random vol-
tage source
(the
A-118
’s random output). The
intensity
of this modulation is controlled by the
modulation wheel
(output
C1
on the A-191).
•
Amplitude modulation
The
intensity
of the amplitude modulation created
by the LFO patched into the VCA (A-130) is control-
led by a
ftertouch
(output
AT
on the A-191).
•
Overall volume
The overall volume of the output signal sent to the
monitoring system is controlled by
MIDI controller #7
(Volume)
(output
C7
on the A-191). This controller can
be assigned to a pedal, pitch ribbon, etc. on your
master keyboard.
H
If you want to use a MIDI controller which the
A-191 doesn’t support - for instance a
sustain pedal - then you can always set the
A-190 to respond to it, and output it from its
CV2 socket.
MIDI-synchronised LFO
The internal LFO on the A-191 is synchronised to MIDI
clock. This is particularly useful when you’re using a
MIDI sequencer or arpeggiator with the A-100.
An example is shown in Fig. 3. In this patch, the
internal LFO modulates the VCF’s cut-off frequency.
