Instrument for tuning musical instruments

Details Instrument for tuning musical instruments Instrument for tuning musical instruments

1975-07-08

1977-08-16

Tomsky, Stephen J.

Music

Accessories

Tuning devices

G10G 702

Patent

active

040418316

ABSTRACT:
An instrument for tuning musical instruments where a low difference frequency is derived between the instrument to be tuned and a reference frequency. The difference frequency signal is shaped to a pulse train of constant amplitude and width pulses. The pulses are integrated with respect to time, and an indicating meter indicates when the instrument is precisely in tune or small sharp or flat deviations therefrom.

REFERENCES:
patent: 2924776 (1960-02-01), Peterson
patent: 3144802 (1964-08-01), Faber, Jr. et al.
patent: 3472116 (1969-10-01), Schott
patent: 3631756 (1972-01-01), Young
patent: 3795169 (1974-03-01), Belcher
patent: 3881389 (1975-05-01), Allen
patent: 3901120 (1975-08-01), Youngquist

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