DOEPFER A-155 Manuel - Page 14

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A-155

Analog / Trigger Sequencer

The following are some short notes with suggestions

for further exploration, to act as inspiration for your

own patching ideas.

• Gate patched to glide control

Glide / portamento can be switched on or off for

each step (a la TB-303, see. p. 6).

• Trigger (Gate) patched to Reset

Shortening a sequence to, e.g., six notes.

• Trigger (Gate) patched to Stop

"One shot": the sequence runs just once, and only

repeats when a Start signal is received.

• Chopping up audio signals

Using the lower analog CV row, audio signals

patched into the inputs will be output 'chopped up'

from the Pre Out socket.

• MIDI control

The A-155 can be controlled by MIDI-Clock with the

help of an A-190 module; the Clock and Reset

outputs of the A-190 are simply connected to the

Clock and Reset inputs on the A-155.

System A - 100

• Random Clock

The Random Clock output from the A-117 can give

a sequence random timing.

• VC-LFO as Clock

Using one of the analog CV rows to control a

VC-LFO (A-147), the timing of each step of the

sequence can be completely variable.

• Variable decay time for each step

Using one analog CV row to control the decay time

on a VC-ADSR (A-141 or A-142 - and on the A-141

attack and release times could also be controlled)

the envelope output can then control, e.g., a VCF

or VCA.

• Variable audio pulse width for each step

Using one analog CV row to control the pulse width

of a VCO square wave.

Variable control pulse width for each step

Using one analog CV row to control decay on an

A-142 (and taking the gate output from the A-142).

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