Concerto for Self-Accompanying Digital Synthesizer. The instrument is possibly the first real time 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 it will continue to be played live against.
Laurie Spiegel Playing 1977 Bell Labs Hal Alles Synth
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