发明授权
- 专利标题： Method for adaptive control and equalization of electroacoustic channels
- 专利标题（中）： 电声通道自适应控制和均衡的方法
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申请号： US13056251申请日： 2009-07-29
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公开(公告)号： US08693699B2公开(公告)日： 2014-04-08
- 发明人: Matthew Fellers , Grant Davidson , Rongshan Yu , Eric Benjamin , Kenneth Gundry
- 申请人： Matthew Fellers , Grant Davidson , Rongshan Yu , Eric Benjamin , Kenneth Gundry
- 申请人地址： US CA San Francisco
- 专利权人： Dolby Laboratories Licensing Corporation
- 当前专利权人： Dolby Laboratories Licensing Corporation
- 当前专利权人地址： US CA San Francisco
- 国际申请： PCT/US2009/052042 WO 20090729
- 国际公布： WO2010/014663 WO 20100204
- 主分类号： H03B29/00
- IPC分类号： H03B29/00
摘要：
An electroacoustic channel soundfield is altered. An audio signal is applied by an electromechanical transducer to an acoustic space, causing air pressure changes therein. Another audio signal is obtained by a second electromechanical transducer, responsive to air pressure changes in the acoustic space. A transfer function estimate of the electroacoustic channel is established, responsive to the second audio signal and part of the first audio signal. The transfer function estimate is derived to be adaptive to temporal variations in the electroacoustic channel transfer function. Filters are obtained with transfer functions based on the transfer function estimate. Part of the first audio signal is filtered therewith.