Reference frequency signal generator for tuning apparatus

Details Reference frequency signal generator for tuning apparatus Reference frequency signal generator for tuning apparatus

1980-03-31

1982-05-04

Dobeck, B.

Music

Accessories

Tuning devices

84 101, 84DIG18, G10G 702

Patent

active

043276237

ABSTRACT:
A reference frequency generator for a tuning apparatus comprising a variable frequency divider which frequency divides a source signal in accordance with frequency division data stored in one or more ROM's. The frequency division data comprises note data for specifying frequencies of respective notes in one octave of a musical scale, pitch deviation data for specifying pitch deviation of the respective notes in one octave with respect to the frequencies specified by said note data and tuning curve data for specifying tuning characeristics covering several octaves, so that the generator generates reference frequency signals representing various pitch deviations and tuning characteristics as well as a standard tuning pitch or characteristic.

REFERENCES:
patent: 4053739 (1977-10-01), Miller et al.
patent: 4078469 (1978-03-01), Calvin
patent: 4114496 (1978-09-01), Deutsch
patent: 4215616 (1980-08-01), Gross

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