发明申请
- 专利标题: SOUND REPRODUCTION DEVICE
- 专利标题(中): 声音再现设备
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申请号: US13820441申请日: 2011-07-12
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公开(公告)号: US20130163795A1公开(公告)日: 2013-06-27
- 发明人: Katsu Takeda , Fumiyasu Konno , Susumu Fukushima , Rihito Shoji
- 申请人: Katsu Takeda , Fumiyasu Konno , Susumu Fukushima , Rihito Shoji
- 申请人地址: JP Osaka
- 专利权人: PANASONIC CORPORATION
- 当前专利权人: PANASONIC CORPORATION
- 当前专利权人地址: JP Osaka
- 优先权: JP2010-200657 20100908
- 国际申请: PCT/JP2011/003978 WO 20110712
- 主分类号: H04R5/02
- IPC分类号: H04R5/02
摘要:
Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener.
公开/授权文献
- US08750543B2 Sound reproduction device 公开/授权日:2014-06-10