Doepfer A-144 Morphing Controller - Manual (Page 5)

doepfer System A - 100 Morphing Controller A-144
5
Different control voltage sources lead to interesting
morphing effects:
Automatic morphing ca be realized e.g. with LFO
(A-145, A-146), VCLFO (A-147), ADSR (A-140),
VCADSR (A-141) or analog sequencer (A-155).
For manual morphing e.g. these modules can be
used: Theremin (A-178), Light controlled CV (A-179),
Foot controller (A-177), Joy Stick (A-174), MIDI-to-CV
interface (A-190, A-191, e.g. in combination with mo-
dulation wheel or after touch).
Quadrophonic spatial positioning
In the patch in fig. 3 the A-144 outputs control four
VCAs. The audio inputs of the VCAs may be fed with
the same of even different audio signals. Each VCA is
followed by a separate power amplifier/loudspeaker.
The CV input voltage of the A-144 defines the spatial
position of the audio signal in the quadrophonic spcae.
Additional modules like CV-Phasers (A-125) or CV
frequency shifters (A-126) may be used to intensify the
spatial impression.
A sawtooth control voltage is used to obtain a conti-
nuous spatial rotation of the audio signal.
Fig. 3: Positioning of audio signals in the quadro-
phonic hearing space
Quad Space
VCA 1
Out 1
VCA 2
VCA 4
A-144
VCA 3
Audio In CV In
Out 2
Out 3
Out 4