| 摘要 |
PROBLEM TO BE SOLVED: To output audio information corresponding to audio signals without using an exclusive conversion circuit. SOLUTION: In a conversion circuit 1 provided on a case body 8, the audio signals are inputted and the inputted audio signals are converted to signals suitable for the characteristics of a piezoelectric element 6 provided to the same case body 8 and outputted. The signals outputted from the conversion circuit 1 are inputted to the piezoelectric element 6 and the audio information corresponding to the inputted signals is outputted from the piezoelectric element 6. COPYRIGHT: (C)2006,JPO&NCIPI |
