Method and apparatus for sensing pedal motion and actuating peda

Details Method and apparatus for sensing pedal motion and actuating peda Method and apparatus for sensing pedal motion and actuating peda

1997-03-27

1999-05-18

Wysocki, Jonathan

Music

Accessories

Recording devices

84 33, 84225, G10G3/00

Patent

active

059052201

ABSTRACT:
A piano pedal optical sensor apparatus and method for accurately measuring, recording and reproducing the pedal expression generated during piano performances. A plurality of optical emitter/sensors are mounted on the pedal support assembly of a piano, and a plurality of corresponding optical reflectors are mounted on the moving connecting rods associated with piano pedals on the piano. Output voltage signals from the optical emitter sensors, which vary according to pedal movement, are monitored and used to generate and record pedal position values. The recorded pedal position values are then used to recreate the original pedal expression of the piano performance by generation of pulse width modulation signals which are used to drive solenoids associated with piano pedals.

REFERENCES:
patent: 4216694 (1980-08-01), Ramsey et al.
patent: 4450749 (1984-05-01), Stahnke
patent: 5016513 (1991-05-01), Stahnke
patent: 5131306 (1992-07-01), Yamamoto
patent: 5231283 (1993-07-01), Starkey et al.
patent: 5524521 (1996-06-01), Clift et al.

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