Polyphonic sliding portamento in a musical instrument

Details Polyphonic sliding portamento in a musical instrument Polyphonic sliding portamento in a musical instrument

Filed on

1980-07-10

Date issued

1982-07-27

Examiner

Rubinson, Gene Z.

Patent Class

Music

SubClass

Instruments

Other Related Categories

84 101, 84DIG7, G10H 102

Type

Patent

Status

active

Patent number

043411410

Description

ABSTRACT:
A keyboard operated musical instrument with portamento effect in which the portamento keyboard consists of a linear array of keyswitches. The keyswitches are arranged in groups corresponding to each musical note and spaced so that a number of contiguous switches are actuated by each finger in contact with the portamento keyboard. Apparatus is provided for generating a frequency number corresponding to the closest switch actuated by the center of each finger thereby providing polyphonic portamento effects as the finger positions are slid or changed along the portamento keyboard. The frequency numbers are utilized to control the pitches of tones generated by the musical instrument.

REFERENCES:
patent: 3809786 (1974-05-01), Deutsch
patent: 4022098 (1977-05-01), Deutsch et al.

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