Musical tone central parameter controller for a musical instrume

Details Musical tone central parameter controller for a musical instrume Musical tone central parameter controller for a musical instrume

1990-03-19

1993-02-16

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84687, 84DIG7, 338 99, G10H 134, H01L 4108, H01C 1010

Patent

active

051873150

ABSTRACT:
In construction of a keyboard apparatus in which a plurality of keys are swingably mounted to a fixed key support and change in electric inductance is induced in response to every key operation for adjustment of musical tone control parameters, the change in inductance by an inductance change inducer is detected by at least one planar coil pattern which is arranged such that its mating surface area with the an inductance change inducer should change in correspondence to the key stroke of the key at key operation. Thanks to use of the change in the mating surface area in detection, a linear relationship is obtained between the key stroke and the detection output, which well avoids inter-key variation in detection output for uniform generation of musical tones from different keys.

REFERENCES:
patent: 4580478 (1986-04-01), Brosh et al.
patent: 4615252 (1986-10-01), Yamauchi et al.
patent: 4838139 (1989-06-01), Fiori, Jr.
patent: 4852443 (1989-08-01), Duncan et al.

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