Musical instrument tuner with incremental scale shift

Details Musical instrument tuner with incremental scale shift Musical instrument tuner with incremental scale shift

1979-05-17

1981-03-17

Griffin, Donald A.

Music

Accessories

Tuning devices

84DIG11, 84DIG18, 324 78R, 331 25, G10G 702

Patent

active

042560080

ABSTRACT:
Instant scale shifting by predetermined increments is provided in a musical instrument tuning device by means of a programmable phase locked loop and crystal-controlled oscillator combination. The incremental scale steps are extremely accurate without need for recalibration and with no change in the tone intervals.

REFERENCES:
patent: 2958250 (1960-11-01), Poehler
patent: 3876936 (1975-04-01), Lester
patent: 3939751 (1976-02-01), Harasek
patent: 4078469 (1978-03-01), Calvin

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