Patent ID: 7371954

Claim:
A tuner apparatus comprising: a storage portion that stores a transposition parameter as associated with identifiers each indicating a type of a musical instrument, the transposition parameter indicating a relationship between a note name in an actual tone pitch and a note name written in a score of a performed note of a musical instrument to be tuned; a setting portion that reads out the transposition parameter stored in the storage portion as associated with an identifier selected by a user to set the read out transposition parameter; an input portion for inputting the performed note of the musical instrument; a pitch detecting portion that detects a pitch of the inputted performed note; a calculating portion that calculates a difference between a pitch of a target note and the pitch detected by the pitch detecting portion; and a display control portion that causes a display device to display the difference calculated by the calculating portion, while converting the note name of the target note into the note name written in a score in accordance with the transposition parameter read out by the setting portion and causes the display device to display a staff in which a note corresponding to the converted note name written in a score is written.