Patent ID: 7435890

Claim:
A tuning device, comprising: pitch extraction means with which a pitch of an input signal is extracted; deviation detection means with which a deviation of the pitch that has been extracted by the pitch extraction means from a standard pitch is detected, and the deviation that has been detected by the deviation detection means is displayed by an indicator of a mechanical meter; an ultrasonic motor that drives the indicator; and control means that drives the ultrasonic motor in conformance with the deviation that has been detected by the deviation detection means, wherein the control means, by driving of the indicator using the ultrasonic motor, arranges the indicator in a standard position when the deviation that has been detected by the deviation detection means is zero, and moves the indicator up to a position in a positive direction that corresponds to the deviation when the deviation is a positive value, and moves the indicator up to a position in a negative direction that corresponds to the deviation when the deviation is a negative value.