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In the multi-channel echo cancellation, the nonlinear pre-processing is always used to overcome the non-convergence of the filter caused by the strong correlation of input signals.
非线性预处理是解决多通路回波消除中因输入信号间的强相关性而引起的滤波器不收敛的有效方法。
Multi channel acoustic echo cancellation (AEC) systems suffer from the non uniqueness problem of the adaptive identification solution because of the correlation of the input signals.
多路回波消除问题的本质难点是由于多路输入信号之间的强相关性而导致的自适应滤波器解不唯一的问题。
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