Invention Grant
- Patent Title: Sound reproduction device
- Patent Title (中): 声音再现设备
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Application No.: US13820441Application Date: 2011-07-12
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Publication No.: US08750543B2Publication Date: 2014-06-10
- Inventor: Katsu Takeda , Fumiyasu Konno , Susumu Fukushima , Rihito Shoji
- Applicant: Katsu Takeda , Fumiyasu Konno , Susumu Fukushima , Rihito Shoji
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2010-200657 20100908
- International Application: PCT/JP2011/003978 WO 20110712
- International Announcement: WO2012/032704 WO 20120315
- Main IPC: H04R5/02
- IPC: H04R5/02

Abstract:
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.
Public/Granted literature
- US20130163795A1 SOUND REPRODUCTION DEVICE Public/Granted day:2013-06-27
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