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q4-g03olf comments on Harry Potter and the Methods of Rationality discussion thread, part 15, chapter 84 - Less Wrong
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I'm experimenting with reproducing the sound of the really horrible humming in Mathematica. I haven't changed the duration of notes yet, but I've experimented with trying to make things sound as horribly off-key as possible. I've started out with just changing the pitches of the notes by adding normally-distributed noise. So far the main discovery I've made is that for greater effect, the magnitude of the change should be proportional to the length of the note. Any ideas for things to try?
I'm using MIDI sounds, which are the simplest to set up, but also have the drawback that every pitch must correspond to an integral semitone, which limits how horrible things can sound. Also, what is a good standard MIDI instrument for simulating humming?
You might check out a program called Max/MSP if you want to get really deep into this stuff. It handles conversions between MIDI and audio signal pretty elegantly. Other ideas..
You might try making notes that change pitch continuously You might try putting the breaks in parts of the music where we expect it to continue. MIDI "doo" or other synth voice instruments tend to sound pretty maddening on their own without much special effort. Maybe layer in helicopter sounds or applause to simulate breathiness?
The FluidSynth sound fonts are quite nice within their instruments' usual range, but do try going up or down a bit far for great lulz.
Just out of curiosity, what's your set-up (MIDI controller, software, etc)? I have an old Oxygen 8, Ableton Live 8, and some VSTs. My music sucks.
LMMS, a cheap'n'cheerful open source knockoff of FruityLoops. It's basically a toy (e.g., it has no undo. Seriously). But fun.