YouTube Uploaded by MusicMouse on Jan 26, 2007
Audio on left channel only.
"Concerto for Self-Accompanying Digital Synthesizer. The instrument is possibly the first realtime digital synthesizer, built at Bell Telephone Labs, NJ by Hal Alles and team, with C language software written by Laurie that processes the player's live input into an ongoing accompaniment that will continue to be played live against.
This is a legal copy uploaded by the owner of the original tape. The OHM DVD's video was taken from this.
For more info on see
http://retiary.org/ls/obsolete_systems
For tech info on the synth see:
http://www.matrixsynth.com/blog/media/misc/spiegel/Alles1.pdf"
Laurie Spiegel's website:
http://retiary.org/ls/.
Laurie on Wikipedia
Update embeddable video and description above sent my way via Laurie Spiegel, and via Reed in the comments before the embed: "She's playing a digital synthesizer built by Hal Alles of Bell Labs. Somehow it found its way to Oberlin College in Ohio, where it has remained broken & unused in the basement for over 20 years. (The video, btw, is from the
new Ohm DVD compilation). "
Update via Andrew Dean on AH:
"Here's the credit for the Spiegel trackl on the DVD:
Track 12: Laurie Spiegel Improvisation on a 'Concerto Generator'
(2:40) Music, Performance, and Interactive software by Laurie Spiegel,
1977
So, "Concerto Generator" it is. Probably early digital by Hal Alles."
Update:
PDF on the instrument. Via ivan on AH.
Update: And
more from steve sloan on AH.
Update via Loscha: You can find the patent for Laurie Spiegel's machine
here.