发明授权
- 专利标题： Loudspeaker system
- 专利标题（中）： 扬声器系统
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申请号： US311355申请日： 1981-10-14
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公开(公告)号： US4472834A公开(公告)日： 1984-09-18
- 发明人: Isao Yamamuro , Kunihiko Shimada
- 申请人： Isao Yamamuro , Kunihiko Shimada
- 申请人地址： JPX Tokyo
- 专利权人： Pioneer Electronic Corporation
- 当前专利权人： Pioneer Electronic Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX55-144619 19801016
- 主分类号： H04R5/02
- IPC分类号： H04R5/02 ; H04R1/40 ; H04R3/00 ; H04R3/12 ; H04S7/00 ; H03G3/00 ; H04R5/00
摘要：
A plurality of delay circuits each having a different delay time are inserted between an audio signal source and each speaker in a multiple-speaker system so that the frequency dependence of speaker system directivity is reduced. If desired, the audio signal can be divided into different frequency band signals with each frequency band signal subjected to a different delay or set of delays.
公开/授权文献
- US5631511A Gear motor with an electric motor having a hollow shaft 公开/授权日：1997-05-20
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