| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound wave transceiver independently having a resonance frequency and hydraulic pressure resistance, and having the higher versatility of possible design and allowing its use at a wider band in a wide band sound wave transceiver. SOLUTION: The sound wave transceiver including a bolted Langevin vibrator is provided with a disk cavity 4 in the interior of a front mass 1. The cavity at its acoustic radiation area is used as a flexible diaphragm 7. An annular piezoelectric vibrator 6 is provided on a periphery in the cavity. COPYRIGHT: (C)2003,JPO
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