Lunetta Synthesis: Difference between revisions
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==Intro== | |||
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. | |||
[[File:Stanley3.jpg|400px]][[File:Stanley2.jpg|465px]] | |||
https://www.noisebridge.net/wiki/NoiseHack | |||
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. | |||
[[File:Schmitt-osc1.gif]] | |||
[[File:Schmitt.gif]] | |||
=== 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: | |||
https://hackadaycom.files.wordpress.com/2015/01/40106_sync_osc.png?w=800&h=326 | |||
==== 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. | |||
[[File:7414-oscillator-waveform-diagram.png]] | |||
==== 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) | |||
Latest revision as of 17:47, 23 December 2023
Intro
[edit | edit source]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.
https://www.noisebridge.net/wiki/NoiseHack
This page is a work-in-progress. Feel free to add more info and links, but please try to keep it organized.
General Tips
[edit | edit source]- 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
[edit | edit source]The Lunetta Oscillator is the heart of Lunetta Synthesis. It's an oscillator based on a Schmitt Inverter.
Parts
[edit | edit source]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
[edit | edit source]Intermodulation
[edit | edit source]Drive one Schmitt oscillator with another, through a diode, and using a switch as a trigger:
https://hackadaycom.files.wordpress.com/2015/01/40106_sync_osc.png?w=800&h=326
Gentle Sounds
[edit | edit source]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
[edit | edit source]Starve or overdrive the power supply to the chip for unexpected results.
Amplification
[edit | edit source]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
[edit | edit source]- 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:
Johnyradio (talk) 12:49, 19 May 2018 (UTC)