Piano action magnetic tape recording process for player...

Details Piano action magnetic tape recording process for player... Piano action magnetic tape recording process for player...

G - Physics

10

H

84/1.1

G10H 1/00 (2006.01) G10C 3/12 (2006.01)

Patent

CA 1091069

A PIANO ACTION MAGNETIC TAPE RECORDING PROCESS FOR PLAYER PIANO PLAYBACK ABSTRACT A process is provided for recording electric signals corres- ponding to piano key operation and for reproducing the piano key operation. The process includes switching a discrete frequency oscillator corresponding to each piano key, algebraically adding the outputs of each oscillator, processing the algebraic sum of the oscillator outputs, recording the processed signal, reproduc- ing the processed signal, reprocessing said recorded signal, detecting each frequency in the reprocessed signal, and energizing an electromechanical device so as to actuate the piano key which had switched the discrete frequency oscillator. -1-

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