Electronic musical instrument having independent pitch control f

Details Electronic musical instrument having independent pitch control f Electronic musical instrument having independent pitch control f

1993-12-13

1995-05-02

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84657, 84445, 84451, G10H 700, G10H 500, H02M 500

Patent

active

054121531

ABSTRACT:
Disclosed is a tone generating apparatus which is provided with a timbre select switch to specify a timbre and a scan circuit for generating key codes corresponding to keys. Pitch control values corresponding to the timbres and key codes are stored in the form of a pitch control table in a ROM. When a predetermined key is depressed, a pitch control value specified by the key code associated with that key and the timbre selected by the timbre select switch is read out from the pitch control table in the ROM, and a tone frequency is determined by the pitch control value and key code. Tone generation is controlled based on the tone frequency.
A pitch control value read out from the pitch control table in the ROM is given a predetermined offset to produce a musical tone having vibrato.
Further, a pitch control value read out from the pitch control table in the ROM is multiplied by a value specified by an operation panel to alter the degree of adding the pitch.

REFERENCES:
patent: 3968719 (1976-07-01), Sanderson
patent: 4566364 (1986-01-01), Katoh
patent: 4635517 (1987-01-01), Nagashima et al.
patent: 4724736 (1988-02-01), Isozaki
patent: 4915007 (1990-04-01), Wachi et al.
patent: 4947724 (1990-08-01), Hirano et al.
patent: 5117727 (1992-06-01), Matsuda

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