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A Touch Sensitive Keyboard for Electronic Music

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An interface system has been developed allowing for the connection of a concert grand piano action and keyboard to a digital electronic music synthesizer. The interface uses machined steel flags attached to the hammers and keys of the piano action which pass through phototransistor detectors. These detectors are scanned by a microcomputer, and information about the velocity and sustain duration of each depressed key is passed on to the synthesizer.

JAES Volume 30 Issue 10 pp. 732-734; October 1982
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AES - Audio Engineering Society