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 DAMPing.
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 INput 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%.
