I originally gave this talk at
Video of that talk is available: https://www.youtube.com/watch?v=nwsg-ZTRRoI
The audio gets wonky because their HDMI system used 48kHz audio sample rate rather than the 44.1kHz that my code expects, oops.
I reprised the talk at 🍩.js in Portland, and video is available here: https://www.youtube.com/watch?v=u0umvcH7kIc
In this version, the audio gets wonky because instance of Skype running on the PA system was secretly trying to automatically readjust the input levels while the hosts wrestled against it, in confusion.
Hopefully future talks will demonstrate even more varied and interesting ways of failing to record this music.
VIDEOSYNTH AURALIZER
The piece of video/music that I try to show off that never seems to work quite right on stage is available here:
I have no idea what browsers it will work in. I use Chrome. Feel free to view the source, but it's a bit of a mess and kind of overengineered- I pushed some of the video-to-audio conversion into GPU code, and added the oscilliscope and FFT visualizations, and I don't remember what else.
The initial inspiration for the videosynth auralizer came as "composition b", which I wrote in a single night's worth of insomnia, October 2016.
The first piece that made me think I was making something musically interesting was "without incidental complexity"
- A440 in Javascript
- A Major triad in Javascript
- A440 in WebGL Jump directly to: (javascript audiolizer function) (WebGL waveform)
- the ruby script that converts wav files to images
- auralizing images of my own voice
- webglfundamentals.org
- thebookofshaders.com
- www.khronos.org/files/webgl/webgl-reference-card-1_0.pdf
- shadertoy.com
- developer.mozilla.org (especially their Web Audio docs)
- adventurekid.se
- bytenoise.co.uk
The algorithmic art I used in a slide is "chaos portal (red/blue)" on shadertoy: https://www.shadertoy.com/view/MtlyDj
A related but different piece titled "chaos pyramid" was on display during the intermission at !!con: https://www.shadertoy.com/view/ldscWN
The Patreon page that I haven't managed to actually use yet is at https://www.patreon.com/jes5199
I put some images I generated onto https://wolfe-interval.tumblr.com/
I ran a version of the auralizer on a family of aliasing patterns that I had been playing with (it's a long story.) and I found the noise surprisingly pleasing and so I posted it to soundcloud as if it was music: https://soundcloud.com/wolfe-interval/chromogeographic-oscillation
44,100 ÷ 1024 = 43.06640625 Hz
maybe someone else will stumble across this number in the process of doing something strange with audio, google it, and find this page
after all, that's how I found this one: https://www.adventurekid.se/akrt/glossary/one-cycle-waveforms/1024-at-44-1-khz/