Tuning device

Music – Accessories – Tuning devices

Patent

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Details

84 101, 324 79R, G10G 702

Patent

active

040194191

ABSTRACT:
A tuning device for musical instruments or voices comprises a visual stroboscopic displaying means which displays a light flow at a speed proportional to the difference of a tone to be tuned from the signal of the corresponding standard pitch. A standard pitch in a predetermined octave is synthesized from pulses generated by a high frequency oscillator the standard pitch and is divided into a pitch in a predetermined lower octave for comparing the tone to be tuned in the stroboscopic displaying means. The tone to be tuned is also divided into a signal of a pitch in the lower octave and it is transmitted to the stroboscopic displaying means.
The stroboscopic display means compares the signal to be tuned with the standard signal, making a light-flow display by overlapping both the signals. The pitch and octave of the tone to be tuned is previously set on the device with a manual selector switch.

REFERENCES:
patent: 2751446 (1956-06-01), Bopp
patent: 2924776 (1960-02-01), Peterson
patent: 2958250 (1960-11-01), Poehler
patent: 3509454 (1970-04-01), Gossel
patent: 3696293 (1972-10-01), Hoffmann et al.
patent: 3702370 (1972-11-01), Hallman, Jr.
patent: 3743756 (1973-07-01), Franssen et al.
patent: 3861266 (1975-01-01), Whitaker
patent: 3879684 (1975-04-01), Sanderson
patent: 3901120 (1975-08-01), Youngquist

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