Keyboard musical instrument equipped with small simple economica

Details Keyboard musical instrument equipped with small simple economica Keyboard musical instrument equipped with small simple economica

1997-07-09

1999-11-02

Nappi, Robert E.

Music

Instruments

General features

84718, 84720, 84743, 84745, 84433, 84439, G10H 132, G10H 134

Patent

active

059774665

ABSTRACT:
An electronic keyboard musical instrument includes a plurality of keys turnable between a rest position and an end position, an electronic sound generating system responsive to the motion of the key so as to generate an electronic sound and a key touch generator for offering resistance against the motion of the key, and the key touch generator has a magnetic plate attached to a side surface of each key, a stationary electromagnetic actuator generating electromagnetic force so as to attract the magnetic plate thereto and a controller responsive to a key position signal representative of a current key position so as to change the magnitude of a driving signal supplied to the electromagnetic actuator, thereby varying the resistance like the key of an acoustic piano.

REFERENCES:
patent: 5763799 (1998-06-01), Kimble
patent: 5783765 (1998-07-01), Muramatsu

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