PURPOSE: To provide a user's song scoring device for a KARAOKE (orchestration without lyrics) system reliably scoring user's song. CONSTITUTION: When a user's speech signal is inputted, the user's song scoring device for KARAOKE system, generates a first basic frequency signal BF1 with respect to a speech signal section to input to a comparator 30 and inputs an audio signal existing in this speech section to the comparator 30 as a second basic frequency signal BF2 through the use of an energy detector 14. The comparator compares the first and second basic frequency signals with each other to generate a deviation to input to a microprocessor 36, which generates a song score output signal by this deviation.
GRADING APPARATUS OF SONG GRADE OF USER OF SING-ALONG SYSTEM