发明授权
- 专利标题: Sound field control apparatus and method
- 专利标题(中): 声场控制装置及方法
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申请号: US13357634申请日: 2012-01-25
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公开(公告)号: US09497562B2公开(公告)日: 2016-11-15
- 发明人: Takahiro Hiruma , Akihiko Enamito , Osamu Nishimura
- 申请人: Takahiro Hiruma , Akihiko Enamito , Osamu Nishimura
- 申请人地址: JP Tokyo
- 专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人: KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址: JP Tokyo
- 代理机构: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
- 优先权: JP2011-015364 20110127
- 主分类号: H04R5/02
- IPC分类号: H04R5/02 ; H04R21/00 ; G10K11/16 ; H04B3/00 ; H04R5/00 ; H04S7/00 ; H04S1/00 ; H04R1/26 ; H04R3/12
摘要:
According to one embodiment, a sound field control apparatus is provided with a control filter and a calculation unit. The filter executes an FIR computation for an acoustic signal using coefficients to output a main signal and control signals. The unit calculates the main coefficient and the coefficients based on Spatial transmission characteristics and a sound increase factor n, to set a composite sound pressure from a main speaker and control speakers to a first area to be n times of a coming sound pressure from only the main speaker, and to set a composite sound pressure from the main speaker and control speakers to a second area to be equal to the coming sound pressure from only the main speaker.
公开/授权文献
- US20120195447A1 SOUND FIELD CONTROL APPARATUS AND METHOD 公开/授权日:2012-08-02
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