| 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 has a RAM which stores Karaoke music data including a performance part of an electric guitar 4 and with which chord information is associated, reads and reproduces the Karaoke music data, generates target pitch data corresponding to chords in the electric guitar 4, inputs a performance signal to be output from performance of the electric guitar 4 of a user, generates actual pitch data by performing chroma vector processing by extracting frequency components of the performance signal to be input, performs overtone correction by giving any one of a plurality of kinds of mutually different weighting to coincidence between the generated actual pitch data and the corresponding target pitch data according to chord types, and performs point rating of performance according to the coincidence after correction to which the overtone correction is performed. |
