| 摘要 |
PROBLEM TO BE SOLVED: To enhance sound effects by changing the directivity of a tweeter to a position corresponding to the viewing point of a user. SOLUTION: The on-board speaker includes a woofer, the tweeter disposed in front of the woofer, and a pair of bridges which are disposed in front of the woofer across the woofer from one end to the other end so as to clamp the tweeter slidably along a diameter of the woofer. The pair of bridges are curved convexly toward before the woofer or convexly toward behind the woofer. COPYRIGHT: (C)2009,JPO&INPIT
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