In an adaptive echo canceller,the detection algorithm able to distinguish echo pass change(EPC) from double-talk(DT) is vital to ensure that adaptive filter tap coefficients are updated in case of EPC and frozen during the DT period.
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自适应声回波对消器中;可区分回波通道变化EPC(Echo Pass Change)和双端话音DT(Double-Talk)的检测算法非常重要;以确保自适应滤波器在EPC时更新权系数;在DT期间冻结权系数.
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