Precise electronic aid to musical instrument tuning

Details Precise electronic aid to musical instrument tuning Precise electronic aid to musical instrument tuning

1990-10-29

1991-05-21

Hix, L. T.

Music

Accessories

Tuning devices

G10G 100

Patent

active

050165151

ABSTRACT:
An aid to tuning musical instruments. A microprocessor-controlled frequency standard is used to control a shift-register whose data is the digitized sound detected by a microphone. The data from the shift register are loaded into a parallel-load latch and then used to control an array of indicator lights. The pattern in the lights indicates the error in pitch of the sounded note. A person tunes a musical instrument by making the pattern in the lights become nearly stationary. The same synthesized frequency is made available in a speaker.

REFERENCES:
patent: 3968719 (1976-07-01), Sanderson
patent: 4014242 (1977-03-01), Sanderson
patent: 4429609 (1984-02-01), Warrender
patent: 4732071 (1988-03-01), Deutsch

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