Method and apparatus for altering actuator drive in a reproducin

Details Method and apparatus for altering actuator drive in a reproducin Method and apparatus for altering actuator drive in a reproducin

1985-06-24

1986-06-10

Hix, L. T.

Music

Instruments

Automatic

84 11, 84DIG29, G10F 102, G10H 300

Patent

active

045935920

ABSTRACT:
A method and apparatus for altering the solenoid drive during playback in a reproducing piano to prevent double hammer strikes. The key is depressed by a solenoid under constant velocity until the point of let-off, and the velocity is then increased to accelerate the continued movement of the key and action so that the hammer rebounding from the string will fall without rebounding from the action against the string a second time. In a preferred embodiment, a microprocessor evaluates the key velocity drive value, and if the velocity called for is above a predetermined level, then no boost is applied to the solenoid.

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