Joystick Axis Generator
2004-01-20 by grantrichter2001
Hello All, The JAG is a new module design that takes any two input voltages, and makes all the inversions and combinations available simultaneously. It is a two input, ten output folder/twister/combiner. You could also look at it as a kind of Cartesian barberpole generator. They original X and Y inputs are passed through to be used in the patch. Or a second unit with X and Y switched will give another 10 functions shifted by 90 degrees. The output fuctions can also be used an inputs to another JAG for really bizarre shapes. The most obvious application is for panning. The corner functions supply control for the 4 VCAs, and the edge function supplies a correction function for equal power panning. The function is used to boost the output in the middle of the pan, eliminating the power drop in the middle. Run the other way, it is useful for Joystick controlled MIXING. For example, running 4 waveforms from a VCO to 4 VCAs allows you to mix them with a Joystick. This is also called "Vector Synthesis" since the Joystick voltages can be replaced with envelope voltages or LFOs. The 4 waveforms could also be the output of 4 different effects units or other waveform processors. Another example is to use two envelopes as the inputs. This will produce 10 envelope "variations" that can be routed to 10 different parameters in a patch (PWM, filter sweep, filter Q, crossfading between two filters, waveshape control, envelopes times etc.). If a Joystick is used, it gives you control of patch timbre in real time. Fun when you are running a sequence and dynamically morphing timbres. For example, the four corner or side functions can control all 4 attack, decay, sustain and release times at once. So the single Joystick can give you all possible envelope shapes mapped across the Joystick plane. Complicated, mysterious, yes, but I also think it will be great fun too. There are 9 LEDS on the faceplate that indicate the output voltages. A great light show, but it also give an intuative grasp of what is happening.