Gate Pulse Width/Trig Delay
The Gate PW/Trig Delay parameter is simple, yet has complex implications.
First, it controls the pulse width of the main QCD output. At 0% the main QCD OUT will be 5ms wide (a trigger). At 50% the
pulse width will be 50%, or a square wave. At 100%, the pulse width will be just shy of 100%, with a 5ms down-trigger.
The way the Gate PW/Trig Delay parameter effects the INV OUT is more complicated. In Delayed Trigger Mode, it controls
the time between the main OUT's rising edge and the INV OUT's trigger. In Inverted Gate Mode, the pulse width is inversely
effected (see diagram below, center). In Shuffle Mode, it's the same as Delayed Trigger Mode, but the additional non-delayed
trigger is not effected.
Sweeping PW from 0% to 80%
Top trace (blue) is main QCD output.
Bottom trace (red) is INV OUT in
Delayed Trigger Mode
Sweeping PW from 0% to 100%
Top trace (blue) is main QCD output.
Bottom trace (red) is INV OUT in
Inverted Gate Mode.
Sweeping PW from 0% to 100%
Top trace (blue) is main QCD output.
Bottom trace (red) is INV OUT in Shuffle
Mode.
Div/Mult CV Attenuator
The Div/Mult CV attenuator is a small but powerful addition to the QCD. Its function is to attenuate and/or invert the incoming
signal on the Div/Mult CV jack. This allows for patching channels into each other, which is basis of programmatic non-linear
sequencing. The simplest example of this is to set one channel to x2, and a second channel to /4. Patch the slower channel's
main OUT jack into the faster channel's Div/Mult CV jack (both jacks are located on the main QCD panel). Make sure the
Pulse Width of the main channel is reasonable, start with 50%. Now adjust the faster channel's Div/Mult CV attenuator
carefully. Listen to how each setting sounds. It's a sensitive control so turn it a little bit at a time, and listen.
In the examples below, the top channel (blue trace) is set to /4, and the bottom channel (red trace) is set to x2. Top channel's
OUT jack is patched into bottom channel's (red trace) Div/Mult CV jack.
Setting Div/Mult CV attenuator to the right of center causes
the channel to speed up when a gate is applied to the
Div/Mult CV jack.
Bottom channel's Div/Mult CV attenuator set to about 60%
(right of center).
Setting Div/Mult CV attenuator to the left of center (inverting)
causes the channel to slow down when a gate is applied to
the Div/Mult CV jack.
Bottom channel's Div/Mult CV attenuator set to about 40%
(left of center).
Creating "Humanness" and Motion
It's easy to create motion and “humanness” even though the QCD relies on strict mathematics. One trick to take advantage of
is that two events which theoretically happen at the same time, actually happen at slightly different times: one or the other will
happen a fraction of a millisecond earlier. If the QCD is patched to take advantage of this, we get an illusion of randomness.
Try simply patching INV OUT into a channel's Div/Mult CV jack and playing with the Div/Mult CV attenuator and Gate PW.
