Tuning device and method for musical instrument

Details Tuning device and method for musical instrument Tuning device and method for musical instrument

2006-04-06

2008-10-14

Donovan, Lincoln (Department: 2837)

Music

Accessories

Tuning devices

C084SDIG018, C116S284000, C116S297000, C984S140000, C984S260000

Reexamination Certificate

active

07435890

ABSTRACT:
A tuning device includes a pitch extraction device with which the pitch of an input signal is extracted and a deviation detection device with which the deviation of the pitch that has been extracted by the pitch extraction device from a standard pitch is detected. The deviation that has been detected by the deviation detection device is displayed by an indicator of a mechanical meter. The tuning device also includes an ultrasonic motor that drives the indicator. A controller drives the ultrasonic motor in conformance with the deviation that has been detected by the deviation detection device. The controller, by driving the indicator using the ultrasonic motor, arranges the indicator in the standard position in those cases where the deviation that has been detected by the deviation detection device is zero, and moves the indicator up to a position in the positive direction that corresponds to the deviation in those cases where the deviation is a positive value and moves the indicator up to a position in the negative direction that corresponds to the deviation in those cases where the deviation is a negative value.

REFERENCES:
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patent: 5374775 (1994-12-01), Kawamura et al.
patent: 5877443 (1999-03-01), Arends et al.
patent: 6470822 (2002-10-01), Adams et al.
patent: 6717330 (2004-04-01), Iino et al.
patent: 2005/0024008 (2005-02-01), Yamada
patent: 3231362 (2001-09-01), None

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