| 摘要 |
PROBLEM TO BE SOLVED: To inform a user of energy consumption when the user has sung a song. SOLUTION: A central control part 5 starts a food-and-drink report mode in response to a prescribed operation input from a remote-control transmitter 8. In this mode, the food and drink taken by a user are reported. When a request is received, the ID of a musical piece and the ID of the user are obtained from the remote-control transmitter 8. During the performing operation of the musical piece, the level of sound volume of the singer is detected from a microphone 20 through an LPF 30 and an A/D converter 30b while load variations and vibration displacement imposed on a foothold of the singer are detected by means of a foothold sensor 4, thereby computing an estimated amount of energy consumed by the voice making motion and rhythmic motion of the user. When the performance of the musical piece is over, a difference is found between the result of the computation and the amount of energy taken in by the requester from the food and drink items, and it is outputted and displayed on a display 28 as the amount of energy yet to be consumed. |
