公开(公告)号：US08693699B2

公开(公告)日：2014-04-08

申请号：US13056251

申请日：2009-07-29

申请人： Matthew Fellers ,  Grant Davidson ,  Rongshan Yu ,  Eric Benjamin ,  Kenneth Gundry

发明人： Matthew Fellers ,  Grant Davidson ,  Rongshan Yu ,  Eric Benjamin ,  Kenneth Gundry

IPC分类号： H03B29/00

CPC分类号： H04R3/04 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/30232 ,  H04R1/1083 ,  H04R2430/03

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.

摘要翻译： 改变电声通道声场。 音频信号由机电换能器施加到声学空间，导致其中的气压变化。 另一个音频信号是通过响应于声学空间中的气压变化的第二机电换能器获得的。 响应于第二音频信号和第一音频信号的一部分，建立电声通道的传递函数估计。 导出传递函数估计是适应于电声通道传递函数中的时间变化。 基于传递函数估计的传递函数获得滤波器。 第一音频信号的一部分被滤波。

公开(公告)号：US20110142247A1

公开(公告)日：2011-06-16

申请号：US13056251

申请日：2009-07-29

申请人： Matthew Fellers ,  Grant Davidson ,  Rongshan Yu ,  Eric Benjamin ,  Kenneth Gundry

发明人： Matthew Fellers ,  Grant Davidson ,  Rongshan Yu ,  Eric Benjamin ,  Kenneth Gundry

IPC分类号： G10K11/16

CPC分类号： H04R3/04 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/30232 ,  H04R1/1083 ,  H04R2430/03

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.

摘要翻译： 改变电声通道声场。 音频信号由机电换能器施加到声学空间，导致其中的空气压力变化。 另一个音频信号是通过响应于声学空间中的气压变化的第二机电换能器获得的。 响应于第二音频信号和第一音频信号的一部分，建立电声通道的传递函数估计。 导出传递函数估计是适应于电声通道传递函数中的时间变化。 基于传递函数估计的传递函数获得滤波器。 第一音频信号的一部分被滤波。