Automatic player piano and estimator for acceleration of depress

Details Automatic player piano and estimator for acceleration of depress Automatic player piano and estimator for acceleration of depress

1996-06-28

1997-07-29

Spyrou, Cassandra C.

Music

Instruments

Automatic

84 22, 84462, 84601, 84DIG7, G10F 102

Patent

active

056523998

ABSTRACT:
An automatic player piano controls keys to be rotated by solenoid-operated actuator units in such a manner as to pass a reference point on a trajectory of the key at a reference velocity in a playback mode, and a hammer driven by the depressed key strikes strings at the same intensity as that in a recording mode, because the intensity is variable with the reference velocity at the reference point.

REFERENCES:
patent: 4913026 (1990-04-01), Kaneko et al.
patent: 4970928 (1990-11-01), Tamaki
patent: 5083491 (1992-01-01), Fields
patent: 5210367 (1993-05-01), Taguchi et al.
patent: 5451708 (1995-09-01), Fujiwara et al.

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