|
|
|
A-137.2 |
|
Voltage
Controlled Wave Multiplier II |
|
|
 |
|
The
A-137-2 is another version of a wave multiplier. In contrast to the
A-137-1 Wavemultiplier, the A-137-2 generates four phase-shifted
copies of a VCO signal applied to the audio input. The four shifted
signals are added to the original signal to obtain a fat sound
similar to five independent VCOs. The phase shifting is made by a
simple circuit that works only for sloped signals like sawtooth,
triangle or sine, but not for rectangles or pulses.
The audio input signal (typically a sawtooth, triangle or sine wave
from a VCO) is compared with a slowly varying control voltage (CV
Shift In). The output of the comparator is a rectangle wave with
variable pulsewidth. If the output of the comparator is added to the
input signal with the correct level relation between both signals, a
phase shifted waveshape is achieved.
The module has available four
manual shift controls and four control voltage inputs with
attenuators for the four internal shifting circuits. Typical sources
for these inputs are LFOs, VCLFOs, random voltages, envelope
generators, sequencers or other control voltage sources. Internally
eight single outputs are available at single pins: the four shifted
signals and in addition four rectangle outputs. A corresponding
breakout module with eight sockets is in the planning stage and will
be released provided that there are sufficient inquiries. The audio
input is equipped with an attenuator to adjust the level for the
right summation of the original and the comparator signal
|
Width
14 HP |
Depth
tba mm |
Current
tba mA |
|
Owners
manual coming soon |
|
