| 摘要 |
<P>PROBLEM TO BE SOLVED: To output sound even without disposing a magnet for each of a plurality of magnetic fields generated in a vibrator. Ž<P>SOLUTION: When the amplitude of a signal flowing to a wiring pattern 12 becomes plus, a magnetic field is generated in the wiring pattern. Between a pored plate 20U and a pored plate 20L, a direction of the magnetic field is from the pored plate 20U to the pored plate 20L and since the direction of a magnetic field generated around the wiring pattern 12 is identical to the direction of a magnetic field in a wall part 23A, a vibrator 10 is attracted to the wall part 23A. When the amplitude of the signal becomes minus, on the other hand, the direction of the magnetic field generated in the wiring pattern 12 becomes identical to the direction of a magnetic field in a wall part 23B, thereby attracting the vibrator 10 to the wall part 23B. Thus, since the vibrator 10 is displaced toward the wall part 23A or the wall part 23B in accordance with the amplitude of the signal and a displacement amount is corresponding to the amplitude of the signal, the vibrator 10 is vibrated in accordance with the signal, and sound corresponding to vibration is generated from the vibrator 10. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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