| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric/acoustic converter whose diaphragm is formed with the coil of a print pattern capable of acquiring flat sound pressure frequency characteristics in a wider voice frequency band, and sufficiently ensuring the level of a sound pressure. SOLUTION: An electric signal in a high voice frequency band is inputted to a coil formed at the peripheral part of a diaphragm, and an electric signal in a low voice frequency band is inputted to a coil formed at the central part of the diaphragm.
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