Music – Accessories – Tuning devices
Patent
1989-01-17
1990-02-13
Hix, L. T.
Music
Accessories
Tuning devices
381 88, 381114, 84DIG18, 84DIG24, G01G 702
Patent
active
048996360
ABSTRACT:
A tuning apparatus comprises a piezoelectric element provided on a tuner case, and a mounting member which enable the tuning apparatus to be mounted on a musical instrument to be tuned. The piezoelectric element converts vibration provided by the musical instrument through the tuner case into an electric signal, and outputs the electric signal to a pitch calculation circuit. The tuning apparatus prevents the detection error due to a harmonic component having a larger amplitude than that of fundamental wave component by making the resonance frequency of the tuner case lower than the frequency of the lowest note of the musical instrument to be tuned.
REFERENCES:
patent: 4163408 (1979-08-01), Capano et al.
patent: 4569077 (1986-02-01), Marinelli et al.
Chiba Mitsuharu
Iwase Hiroshi
Taniguchi Kazuyoshi
Adams Bruce L.
Gray David M.
Hix L. T,.
Seiko Instruments Inc.
Wilks Van C.
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