发明申请
- 专利标题: Method of and apparatus for controlling sound field through array speaker
- 专利标题(中): 通过阵列扬声器控制声场的方法和装置
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申请号: US12149374申请日: 2008-04-30
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公开(公告)号: US20090154723A1公开(公告)日: 2009-06-18
- 发明人: Jung-woo Choi , Young-tae Kim , Jung-ho Kim , Sang-chul Ko
- 申请人: Jung-woo Choi , Young-tae Kim , Jung-ho Kim , Sang-chul Ko
- 申请人地址: KR Suwon-si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-si
- 优先权: KR10-2007-0133706 20071218
- 主分类号: H04B3/00
- IPC分类号: H04B3/00
摘要:
Provided are a method and apparatus for controlling a sound field through an array speaker. The method includes calculating a coefficient of a filter that controls sound pressure of an input signal, based on a sound pressure ratio of a suppression area that suppresses sound emitted from an array speaker and an emphasis area that emphasizes the sound, and sound pressure efficiency in the emphasis area, generating a plurality of output signals that focuses the sound to the emphasis area by filtering the input signal based on the calculated coefficient of the filter, and outputting a sound field controlled sound based on the generated plurality of output signals. Accordingly, a listener in a predetermined direction and distance from the array speaker can clearly hear sound, without wearing an earphone or a headset so as to focus the sound only to the listener.
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