Difference between revisions of "Noisebridge:Lunetta"

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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, [[NoiseHack|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.
==General Tips==
* For visual fun, use LED's wherever a schematic calls for diodes.
* For light-activated control, substitute photoresistors for resistors. Or, use a mercury switch like Stanley did in his gun-shaped device, in the photo above :)
==Lunetta Oscillator==
The Lunetta Oscillator is the heart of Lunetta Synthesis. It's an oscillator based on a Schmitt Inverter.
=== Parts ===
CD40106 Hex Schmitt.
* 6 oscillators on a single chip!
* Wide voltage supply (3V-15V), so you can drive with various batteries.
* http://live.partlist.org/331/image/item/open/root/format=big
=== Variations and Tips ===
==== Intermodulation ====
Drive one Schmitt oscillator with another, through a diode, and using a switch as a trigger:
==== Gentle Sounds ====
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-ish wave. That's the voltage presented by the capacitor as it charges/discharges.
==== Starvation ====
Starve or overdrive the power supply to the chip for unexpected results.
==== Amplification ====
Use a cheap 3W '''PAM8403''' amplifier module to drive a speaker.
* Make use of the PAM's stereo channels.
* Overdrive the power supply of the PAM with a 9V battery for extra volume (but check the PAM chip for heat).
* https://www.ebay.com/itm/162965060047
==General Lunetta Synthesis Links==
* https://strangenessandcharm.wordpress.com/2013/10/29/diy-weird-sound-synthesis-with-cmos/
* http://electro-music.com/forum/forum-160.html
* https://hackaday.com/2015/02/04/logic-noise-sweet-sweet-oscillator-sounds/
''Page created by:''
[[User:Johnyradio|Johnyradio]] ([[User talk:Johnyradio|talk]]) 12:49, 19 May 2018 (UTC)

Revision as of 11:15, 20 May 2018