| 摘要 |
PROBLEM TO BE SOLVED: To certainly perform proper point rating to performance of a string musical instrument by a user.SOLUTION: A Karaoke device 10 reads and reproduces Karaoke music data, generates target pitch data of an electric guitar 4 for respective corresponding chords, generates actual pitch data for every predetermined time division by performing chroma vector processing by extracting frequency components of a performance signal of the electric guitar 4, and performs point rating according to coincidence between the actual pitch data and the corresponding target pitch data. When a plurality of chords are included in a specific time division, each of a plurality of pieces of target pitch data is compared with the actual pitch data, the target pitch data to which the highest coincidence is given is determined based on comparison results, and the point rating is performed based on the highest coincidence of the determined target pitch data. |
