Episodes
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Wire speaker? Alas, probably not
While testing a ø15mm piezo as a speaker, I noticed the stiff connecting copper wire seemed to actually work as acoustic amplifier. In the end, it was probably acting as a transmitter onto a metal plate placed on the desk. Still not fully sure.
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Antler first segment, two parallel 50mm piezos
Not your common headphones. First test of first segment of an eventual 'tunnel'
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Servo test with three winged base
Testing the robustness of literally the cheapest servo motors I could find, as I will be using 48 of them eventually. They sound "stuttery", but nicer when run a bit faster. I run them at the lower limit of 5V. I'm also testing laser cut wood piec...
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Cheap Audio Ampflication for Piezo Buzzers: PAM8610 vs TPA3310 vs TDA2030
I decided to see how low you can get in costs for amplifiers suitable to drive a piezo buzzer sound installation. Basically you get all sort of digital amplifier ICs soldered on a small board with a basic circuit around. I am now comparing thre...
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Cheap Audio Ampflication for Piezo Buzzers 1: TDA2030 "Hailege"
I decided to see how low you can get in costs for amplifiers suitable to drive a piezo buzzer sound installation. Basically you get all sort of digital amplifier ICs soldered on a small board with a basic circuit around. This is the first one I...
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Operate rotary dial switch with servo motor
This was a bit of a contrived idea, in order to switch one amplified audio signal among twelve speakers. All in all this solution is much more expensive (and probably error prone) than using a series of mechanical relays, and one would have to com...
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Using a fan to put elastically suspended metal sheet into motion
Using a low power 5V fan on a relay toggled by a Pi Pico to see how much a sheet of copper suspended in its vicinity will be moved. The effect is subtle, perhaps the elongation is 5-10 mm. The fan is quite silent; one could point it more directly ...
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NuagesPad - step 1 - two views attached to the same model
Project to implement a 'padded' version of the Wolkenpumpe live improvisation software interface. NuagesPad is inspired by the idea of Etherpad to assemble multiple players within one virtual space, giving each their own view / perspective. See...
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Tagfalter: biphase-mark based acoustic communication
Transmitting a message from one Pi Zero to another via speaker and microphone, and frequency-keyed modulation based on biphase-mark scheme.
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Tagfalter: Spatial identity to timbre experiment
Process of creating a sound installation with autonomous nodes composed of a Pi zero / single speaker channel / one microphone channel. Obtaining spatial identification from repeated impulse response measurements, and translating a set of distance...
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FScape Feedback Test
Next FScape version 3.14 / Mellite 3.13 will contain new feedback UGens. Here is a test with the feedback loop consisting of a Hilbert transform based frequency shifter and a delay, the shift moving the signal down 30 Hz in each iteration. There i...
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Comparing performance of Lucre2D (alpha experiment) to Processing on a Pi 4
I quickly hacked together a 2D graphics layer for my functional-reactive / dataflow model 'Lucre', with a Processing inspired front API, which allowed me to translate the 'Tree' L-System sketch by Daniel Shiffman. While running smoothly on a lapto...
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Pi Pico capacitive proximity sensor test
After giving up on the Pi 4, another attempt with the capsense library of CircuitPython on a Pi Pico. The resistor has a few mega ohms; with the correct threshold (which changes according to environment ...) one gets quite a good reading.
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Steiner Chain Moons under Plano-Convex Lens
I'm starting to explore the visuality of small 2" round screens covered with a half-dome plano-convex glass lens. Despite low FPS (Pi 4B, code not performance optimised), the animation of moons along a Steiner Chain of size 3 is interesting.
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Motorised Spray Bottle Test 210401
Second attempt - success! This is now with stronger servos (Jamara Q7 Standard - c. 6 kg force), and minimising sideways force by adding a small wood strip to the trigger. It's a bit messy, so I'll add some plastic sheets to the floor, especially ...
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Motorised Spray Bottle Test
Following a video I saw on YT about activating a spray bottle with servo motors, I tried to recreate a similar setup. It "kind of" works, but the servos do not perform the full required angle. My guess is, they are simply to weak and thus stop at ...
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ScalaCollider.js - running scsynth and ScalaCollider alongside in the browser
After building the SuperCollider server (scsynth) as a WebAssembly binary for the browser, the other piece that is missing is a full-fledged client to talk to it. ScalaCollider is a client written in Scala that normally runs on the JVM, but it can...
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scsynth.wasm (SuperCollider server on WebAssembly)
SuperCollider server (scsynth) can now be compiled to WebAssembly (wasm) via Emscripten. Video shows booting of server, loading a synth def, starting a synth, and adjusting one of its frequency parameters. Current development: https://github.com/S...
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negatum-864a4fe-opt-par-play200719b
Sound synthesis programs found through genetic programming have gone through an 'optimisation' stage that removes redundant elements, then through a 'parametrise' stage that identifies up to five constants that, when modulated, yield clearly diffe...
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negatum-864a4fe-opt-par-play200719
Sound synthesis programs found through genetic programming have gone through an 'optimisation' stage that removes redundant elements, then through a 'parametrise' stage that identifies up to five constants that, when modulated, yield clearly diffe...
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A misc channel for audio/video experiments
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A misc channel for audio/video experiments
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