Patent ID: 8809661

Claim:
A tuning device, comprising: a pitch name display means comprising a plurality of display positions that are arranged in a pitch order respectively corresponding to a plurality of pitch names constituting an octave; a pitch detection means detecting a pitch of an input sound; a pitch name determining means determining one of the plurality of pitch names constituting the octave as a reference pitch name based on the pitch of the input sound detected by the pitch detection means, wherein the reference pitch name has a reference pitch closest to the pitch of the input sound; a first lighting control means lighting a reference display position, being the display position corresponding to the reference pitch name, wherein when a difference between the reference pitch corresponding to the reference pitch name determined by the pitch name determining means and the pitch of the input sound is in a range of ±α, wherein α>0, lighting both the reference display position and an adjacent display position, which is the display position adjacent to the reference display position and corresponds to the pitch name that is close to the pitch of the input sound, in a way that a luminance of the reference display position gradually decreases and a luminance of the adjacent display position gradually increases as an absolute value of the difference increases when the difference is outside the range.