Preset1.txt

"Switchpatch1" switches between three 'preset' independent patches 
or sounds. For the sake of time, the three patches are set-up as 
very simple "MiniMoog-like" sounds, that are easily identifiable 
as Sawtooth thru a lowpass filter, two square waves, and a sine 
wave with delayed vibrato. The actual 'master' patch grew to be 
quite complex, and would be very difficult to follow in either 
graphic or text notation. With that in mind, a description of 
what is happening should be easier to deal with.

The Q-143 "Presets" module has a master A/B switch, with "OFF" 
being at the center of this 3-position toggle switch. So, it 
actually would be this: A/OFF/B. It has two "voltage-out" jacks, 
both of which output the knob A setting (-5 to +5volts), "OFF" 
(0 volts), or knob B setting (-5 to +5 volts). The voltage-out 
jacks can be patched to the "control" input of the Q-128 "Switch" 
module(s), which can control other elements of the "master" patch. 
The Q-143 also has two "A" inputs, two "B" inputs, and two "Common" 
outputs. These function not unlike the Q-128 "Switch", except that 
they are both controlled by the manual A/OFF/B switch at the top of 
the module. As a hypothetical example: if you had four Q-128 "Switches", 
and a Q-143 "Presets", you could conceivably switch 10 different 
things at once - probably more by adding on VCAs or Pan/Fades to 
work as switches.

For this particular "Presets" patch, two sawtooth waves (in near 
unison), are patched to "A", and the 'common' is patched to a 
mixer, and then patched to a lowpass filter. A sine wave (2 
octaves lower), bypasses the filter and is remixed with the 
filtered sawtooths before the VCA to provide the 'bottom-end' 
of the sound. The sine is initially tuned to unison, and then 
lowered by patching a Q-125 "Signal Processor" thru a Q-128 
"Switch", and tuning the "offset" down by 2 octaves. The Q-128 
"Switch" is opened by having the 'voltage-output' from "A" 
above 2 volts, which in turn lowers the sine.

The two square waves come from the same oscillators as the 
sawtooths, but they are patched to "B". So what happens is: 
"A" gives 2 sawtooths and a 2-octave down sine wave. "OFF" 
gives only the sine wave (because it is not switched by the 
"Presets" module), and it is back up to unison because "Off" 
provides no voltage to open the 1st Q-128 for the negative 
voltage from the signal processor. "B" allows only the two 
square waves thru to the mixer. It also ouputs a voltage to a 
2nd  Q-128 "Switch", which turns off the sine wave.

Other notable elements of this patch:

· Sine & square waves are switched to an echo-send, and enabled 
  by the Q-143 "Presets", and the amount of send is controlled by 
  a foot pedal. The sawtooths are not sent to the echo-send.

· The two sawtooths and two squares are patched thru a lowpass 
  filter. The "Q" of the filter is determined by an 'offset' 
  voltage from a Q-125 "Signal Processor", which is switched by a 
  3rd Q-128 "Switch". For the squares, the Q is set all the way 
  open, and for the sawtooths, the Q is set about 2/3 closed, and 
  is also modulated by an EG.

· The sine wave alone, is modulated by a delayed vibrato patch, 
  using an Osc., a VCA, and an EG. The vibrato is only applied 
  when there is no voltage coming from A & B of the "Presets" 
  module (the off position) patched to a 4th Q-128 "Switch".

In this demo, you will first hear the sine wave as the A/off/B 
switch is moved back and forth - 2 octaves down, then unison, 
then sine off (silence). After the second silence, you will 
hear the sawtooths and squares being mixed in at a low level. 
You will hear only the squares where there was only silence. And 
finally, the levels of the sawtooths and squares are brought up 
to full level, and then, a little bass part is played.