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Methods and systems for robust approximations of impulse responses in multichannel audio-communication systems
Methods and systems for robust approximations of impulse responses in multichannel audio-communication systems
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机译:用于多通道音频通信系统中脉冲响应的鲁棒近似的方法和系统
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摘要
Proper estimation of impulse responses is an important and challenging aspect of multichannel echo control. Various embodiments of the present invention are directed to real-time, adaptive acoustic echo cancellation methods in multichannel audio-communication systems. In particular, embodiments of the present invention use a collection of a room's past impulse responses to determine an optimal lower dimensional impulse response space as the underlying search subspace for approximate impulse responses. As a result, embodiments of the present invention mitigate inherent instability of multichannel audio-communication systems and provide stable and accurate echo removal without distorting audio signals.
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