I used my cell phone to record Nicole clapping inside the cathedral in Breda, the Netherlands. There was an exceptionally long echo on her clap.
I used Audacity to snip out the impulse response from the recording and convolved it several times with the entire recording, using Sound Hack. My cell phone, unsurprisingly emphasizes high frequencies, so the last one I played at half speed to drop it an octave. I mixed these sounds together in Ardour.
The video was some weird cell phone format, which I converted with ffmpegX and then tweaked the speed by writing a little program in Processing. I mixed the whole thing together in iMovie.
That’s seven separate programs, not counting the ones I couldn’t get to work. Obviously, this is an experiment, but I’m looking forward to making more tiny movies.
Also, that sound you hear at the very end of the piece is from my dog barking her head off outside the cathedral. woof woof woof.
If you just want the audio: Clapping (2008)