Pitch identification device

Details Pitch identification device Pitch identification device

1985-10-09

1987-05-19

Hix, L. T.

Music

Accessories

Tuning devices

84DIG18, 324 79R, B10G 702

Patent

active

046657908

ABSTRACT:
A transducer receives notes from a musical instrument and converts them into a A.C. signals. The signals are passed to a frequency voltage converter which outputs a D.C. voltage representative of the played note. This voltage is converted to a voltage range indicative of the highest octave of interest and is then divided by a D.C. voltage representing true pitch. This division is then representative of the number of cents between the played note and the true pitch.

REFERENCES:
patent: 3144802 (1964-08-01), Faber, Jr. et al.
patent: 3788184 (1974-01-01), Zeiser
patent: 3948140 (1976-04-01), Ichioka et al.
patent: 4028985 (1977-06-01), Merritt
patent: 4280387 (1981-07-01), Moog
patent: 4399732 (1983-08-01), Rothschild et al.
patent: 4481857 (1984-11-01), Havener

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