| 摘要 |
A mobile telephone (10) comprising a body (12) and a bending wave loudspeaker which comprises a panel-form member (14) capable of supporting bending waves and a transducer (24) mounted to the panel-form member to excite bending wave vibration in the panel-form member to produce an acoustic output. The body (12) defines an open-faced cavity (16) and the panel-form member is movable between first and second positions with the panel-form member covering the open face of the cavity (16) when in the first position, and spaced away from the cavity when in the second position.
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