| 摘要 |
PURPOSE: A speaker system is provided, which increases a sound pressure by using a plurality of speakers as maintaining an equal surface area to a single speaker. CONSTITUTION: The speaker system includes a first speaker(101), a second speaker(103), a third speaker(105), a first spacer(102) provided between the first speaker(101) and the second speaker(103), and a second spacer(104) provided between the second speaker(103) and the third speaker(105). The first speaker(101), the second speaker(103) and the third speaker(105) are piezoelectric speakers having an identical physical structure. The first speaker(101) and the second speaker(103) are located so that opposing faces of the first speaker(101) and the second speaker(103) output sounds of an identical phase. The second speaker(103) and the third speaker(105) are located so that opposing faces of the second speaker(103) and the third speaker(105) output sounds of an identical phase. Due to such an arrangement, the phase of the sound output from the face of the second speaker(103) opposing the first speaker(101) is opposite to the phase of the sound output from the face of the second speaker(103) not opposing the first speaker(101). The phase of the sound output from the face of the third speaker(105) opposing the second speaker(103) is opposite to the phase of the sound output from the face of the third speaker(105) not opposing the second speaker(103).
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