| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic transducer for emitting sound into a wide range by increasing directivity of the sound emitted at a high sound pressure level. SOLUTION: A spacer 30 placed between end parts of a pair of frames 11, 12, and a division support part 31 formed in the spacer 30 grip a vibration plate 40, divide the vibration plate 40 and support it so that it can vibrate, and drive by divided vibration plate 41. COPYRIGHT: (C)2011,JPO&INPIT
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