Difference between revisions of "Noisebridge:Lunetta"
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For visual fun, use LED's wherever a schematic calls for diodes.
For visual fun, use LED's wherever a schematic calls for diodes
Revision as of 13:10, 19 May 2018
A page dedicated to Lunetta Synthesis, the art of repurposing and perverting digital logic semiconductor chips into sound-producing devices. The techniques of Lunetta Synthesis were pioneered by sculptor and percussionist Stanley Lunetta in the 1970's. In 2014, Noisebridge was honored to host a talk and demonstration by Stanley Lunetta himself.
This page is a work-in-progress. Feel free to add more info and links, but please try to keep it organized.
- For visual fun, use LED's wherever a schematic calls for diodes.
- For light-activated control, substitute photoresistors for resistors.
The Lunetta Oscillator is the heart of Lunetta Synthesis. It's an oscillator based on a Schmitt Inverter.
CD40106 Hex Schmitt. 6 oscillators on a single chip! http://live.partlist.org/331/image/item/open/root/format=big
Variations and Tips
Drive one Schmitt oscillator with another, through a diode, and using a switch as a trigger:
Most Lunetta syntesizers out there are raucous and chaotic. But sweet, gentle sounds are also possible.
- Tap the inverter output to obtain a loud, buzzy, digital square wave.
- Tap the inverter input to obtain a gentle, soft, analog triangular wave. That's the voltage presented by the capacitor as it charges/discharges.
Starve or overdrive the power supply to the chip for unexpected results.
Use a cheap 3W PAM amplifier module to drive a speaker. Overdrive the powersupply of the PAM with a 9V battery for extra volume (but check for heat).
General Lunetta Synthesis Links