Multiplexed multiple intensity reproducing piano

Details Multiplexed multiple intensity reproducing piano Multiplexed multiple intensity reproducing piano

1989-09-08

1991-06-11

Pellinen, A. D.

Music

Instruments

Automatic

84626, 84633, 84462, G10H 146, G10H 700

Patent

active

050223011

ABSTRACT:
A reproducing piano is provided which is capable of reproducing the notes of a chord or a sequence of multiple intensity notes within several groups of common intensity. This is accomplished by sorting the notes into a plurality of groups and then assigning intensity levels to the various groups so that notes within a group will be played at the same intensity. A limited number of solenoid driver circuits are multiplexed among the solenoids according to the grouping of notes, thereby providing faithful reproduction of the music, but at a lower cost than by individual control of each key.

REFERENCES:
patent: 4132141 (1979-01-01), Campbell et al.
patent: 4135428 (1979-01-01), Campbell
patent: 4307648 (1981-12-01), Stahnke
patent: 4593592 (1986-06-01), Stahnke
patent: 4913026 (1990-04-01), Kaneko et al.

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