Make Noise Optomix Manual - page 8
7
Getting Started:
It’s a VCA, It’s a VCF...
The
Low Pass Gate
operates simultaneously in the Amplitude and Frequency domains. As a
CONTROL
Signal becomes more positive, the Amplitude of the processed signal increases with the lower frequencies
CONTROL
Signal become less positive, the
Amplitude decreases with the higher frequencies being attenuated much sooner than the lower
more pronounced, lurking in the spectrum, while higher frequencies are eagerly diminished. Manual
manipulation of the Panel Controls does not display this phenomenon well. A fast, short Envelope of
around +8V, when patched to a
CONTROL
INput, provide a beautiful example of
OPTOMIX
’s ability to
produce acoustic-like Attack & Decay transients. The processed signal appears to ring-- not unlike a struck
drum, piano string, or xylophone bar.
The
DAMP CV
may lessen this ringing, not unlike applying your hand to the head of a drum while striking it,
or muting a guitar string with your palm while plucking it. Increasing the
DAMP
parameter could be likened
has been common practice to patch the output of a
Low Pass Gate
to a
VCA
in order to control the
Low Pass Gates
. The
OPTOMIX
’s
DAMP
circuit allows for this control without the use of an additional
VCA
.
In order
DAMP Combo Pot
, or
apply a
CONTROL
signal to its
DAMP
INput and adjust the
DAMP Combo Pot
for Attenuation. In order to
reduce the signal bleed (when the Gate is closed), add a touch of
DAMP
ing.
CV Processing and Envelope Generation:
level-shifting of CV, Envelope Generation, and even subtle, non-symmetrical clipping of signals.
To use the new
OPTOMIX
for Envelope Generation, patch a Gate Signal to a CHannel’s
STRIKE IN
put and
patch the associated CHannel OUTput to a modulation input of your choosing (e.g. the CV INput of a VCA).
That's it. In a pinch,
OPTOMIX
OPTOMIX
’s unused CHannel’s
CONTROL Combo Pot
OPTOMIX
CHannel may also be used as a simple Slew Limiter, with “FALL” time set by the assocated
CHannel’s
DAMP
(
Note:
Sidechain Compression
A revised version of the
DAMP
circuit allows for Audio-rate signals to be used as Control Voltages. As a
result, modulating a CHannel’s
DAMP
parameter relative to its
CONTROL
parameter now causes
Gain
Reduction
, with the Compression Ratio set by its
CONTROL
parameter. For the best results, the
CONTROL
Combo Pot
should be set to around 50%.