Method and apparatus for producing variable intensity in a piano

Details Method and apparatus for producing variable intensity in a piano Method and apparatus for producing variable intensity in a piano

1990-08-23

1991-08-27

Hix, L. T.

Music

Instruments

Automatic

G10F 102, G10F 100

Patent

active

050423533

ABSTRACT:
A piano is equipped with electromechanical actuators which are individually associated with and operate the keys to reproduce a piano performance. The actuators are selectively energized according to the notes to be played to recreate a piano performance. When an actuator is energized, individual pulses of uniform width are selected from a pulse train and applied to the actuator, with the number of selected pulses varying the overall drive energy supplied to the actuator to closely approximate a desired drive or note intensity.

REFERENCES:
patent: 4132141 (1979-01-01), Campbell et al.
patent: 4135428 (1979-01-01), Campbell
patent: 4450749 (1984-05-01), Stahnke

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