PROBLEM TO BE SOLVED: To evaluate the singing ability of a user of a karaoke apparatus by measuring a tone between the voice of the user of the karaoke apparatus and the accompaniment sound of the selected song. SOLUTION: Voice signals and accompaniment sound signals from a level adjustment part 30 are supplied to a first and a second A/D converters 40, 50, the voice signals are converted into digital voice signals by the first converter 40, and the accompaniment sound signals are converted into digital accompaniment sound signals. To make comparison of the digital voice signals and the accompaniment sound signals in an ability evaluation part 100, the voice signals and the accompaniment sound signals are simultaneously sampled at the same rate and the first and the second A/D converters 40, 50 simultaneously produce digital voice signals and the digital accompaniment sound signals in right order. After that, both signals are supplied through lines L40, L50 to the ability evaluation part 100, both signals are compared mutually, an evaluation result is generated, and the result is sent to a video processing part 80 to be displayed.
SONG ABILITY EVALUATION METHOD FOR SING-ALONG DEVICE