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1. 发明申请

US20050157866A1 System and method for enhanced stereo audio 有权
标题翻译：用于增强立体声音频的系统和方法
公开(公告)号：US20050157866A1
公开(公告)日：2005-07-21
申请号：US11022293
申请日：2004-12-22
申请人： Trygve Marton , Ingvar Aarnes , Bjorn Winsvold , Geir Overby
发明人： Trygve Marton , Ingvar Aarnes , Bjorn Winsvold , Geir Overby
IPC分类号： H04M9/08
CPC分类号： H04M9/082 , H04M9/08
摘要： An audio communication system and method with improved acoustic characteristics features a stereo detector that is introduced in the echo canceller of the system. When stereo in far-end audio is detected, converging of the adaptive mono model of the canceller is suspended, and when stereo in far-end audio is not detected, converging of the adaptive stereo model of the canceller is suspended. The system may also be extended with a miscellaneous processing unit configured to attenuate the signal at certain events implying a large stereo echo contribution. A stereo collapsing unit is also introduced on the channels of the far-end audio to remove the stereo image at certain events to further suppress the echo contribution.
摘要翻译：具有改善的声学特性的音频通信系统和方法具有引入到系统的回波消除器中的立体声检测器。当检测到远端音频中的立体声时，暂停消除器的自适应单声道模型的收敛，并且当未检测到远端音频中的立体声时，中止自适应立体声模型的收敛。该系统还可以用配置成在意味着大的立体声回波贡献的某些事件处衰减信号的杂项处理单元来扩展。在远端音频的声道上还引入了立体声折叠单元，以在某些事件中去除立体声图像，以进一步抑制回波的贡献。

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