YouTube via synthgeek13 | November 07, 2010 | via this auction
"This is a standalone noise synth based on the TrigPulser module I built for the Lunettoid modular noise machine. This version has three squarewave oscillators. One is used to turn another on & off, giving an AM effect, and the output from this second oscillator is fed into one input of a NAND Schmitt trigger, while the third oscillator is fed into the second input, and the output from the NAND Schmitt trigger then goes to the outside world. The range of sounds it can make is pretty amazing- though it can do the beepy & droney stuff you might expect, it can also do much more (especially when controls are swept)- harsh static-like noise, vocal-like sounds, oscillator-sync type stuff, etc."
via this auction"The TrigPulser Mini is a noisy, 9V battery-powered, three-oscillator squarewave synthesizer, housed in a yellow plastic VHS tape case. One oscillator is used to turn another on & off (this is where the "Trig" comes in, for "trigger"), giving an amplitude-modulation or ring modulator-like effect, and the output from this second oscillator is fed into one input of a NAND Schmitt trigger, while the third oscillator is fed into the second input, and the output from the NAND Schmitt trigger then goes to the outside world. This final stage is what takes it beyond squarewave AM and into truly strange territory. To translate the tech-speak, it's kind of like having a fourth oscillator which is synched to both the single third oscillator and the AM output of the first two. The range of sounds it can make is pretty amazing- though it can do the beepy & droney stuff you might expect, it can also do much more (especially when controls are swept)- harsh staticky noise, vocal-like sounds, oscillator-sync type stuff, etc- watch the video and listen to the audio demo for an idea of what it can do.The audio-only demo is much better quality (no crappy camera mic involved), if you only hear one or the other, it should be that one.
Each oscillator has a knob to control its frequency, and there is also a power starve knob (at the top, in line with the on/off switch and LED). Since all 3 oscillators are linked in some way, the controls are very interactive with each other."
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