Invention Grant
- Patent Title: Sound field reproduction apparatus and method, and program
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Application No.: US15034170Application Date: 2014-11-11
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Publication No.: US10015615B2Publication Date: 2018-07-03
- Inventor: Yuhki Mitsufuji , Homare Kon
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Wolf, Greenfield & Sacks, P.C.
- Priority: JP2013-238791 20131119; JP2014-034973 20140226
- International Application: PCT/JP2014/079807 WO 20141111
- International Announcement: WO2015/076149 WO 20150528
- Main IPC: H04S5/02
- IPC: H04S5/02 ; H04S3/00 ; H04R5/02 ; H04S7/00 ; H04R1/40 ; H04R5/027

Abstract:
The present technology relates to a sound field reproduction apparatus and method, and a program, enabled to more accurately reproduce a sound field. A spacial filter application unit obtains a virtual speaker array drive signal of an annular virtual speaker array with a radius larger than a radius of a spherical microphone array, by applying a spacial filter to a spacial frequency spectrum of a sound collection signal obtained by having the spherical microphone array collect sounds. An inverse filter generation unit obtains an inverse filter based on a transfer function from a real speaker array up to the virtual speaker array. An inverse filter application unit applies the inverse filter to a time frequency spectrum of the virtual speaker array drive signal, and obtains a real speaker array drive signal of the real speaker array. The present technology can be applied to a sound field reproduction device.
Public/Granted literature
- US20160269848A1 SOUND FIELD REPRODUCTION APPARATUS AND METHOD, AND PROGRAM Public/Granted day:2016-09-15
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