| 摘要 |
PROBLEM TO BE SOLVED: To provide a sing-along machine with which a user can judge before singing a keycode or range of tones which he can sing. SOLUTION: After amplifying a singing voice inputted from a microphone 14 during singing a selected musical composition with a microphone voice circuit 9 and so on, the voice signal is inputted in a pitch detection circuit 20, the highest and lowest pitches in the inputted voice signal are detected from the start to the end of playing a musical composition, and then detected results are outputted to a control circuit 5. The control circuit 5 controls the data of the range of tones (the highest and lowest pitches) detected by the pitch detection circuit 20 to store the data into a semiconductor memory 2 or a hard disk 3. In this state, the number of the musical composition is selected by an operation part 1, and then the range of tones of the selected musical composition and the range of tones of a singing person corresponding to an identification code are displayed on a monitor 8 by using a musical score. |
