Papers › Nonlinear Residual Echo Suppression Based on Multi-stream Conv-TasNet

Nonlinear Residual Echo Suppression Based on Multi-stream Conv-TasNet

15 May 2020arXiv:2005.07631archive 2025-07-28

Hongsheng Chen, Teng Xiang, Kai Chen, Jing Lu

Acoustic echo cannot be entirely removed by linear adaptive filters due to the nonlinear relationship between the echo and far-end signal. Usually a post processing module is required to further suppress the echo. In this paper, we propose a residual echo suppression method based on the modification of fully convolutional time-domain audio separation network (Conv-TasNet). Both the residual signal of the linear acoustic echo cancellation system, and the output of the adaptive filter are adopted to form multiple streams for the Conv-TasNet, resulting in more effective echo suppression while keeping a lower latency of the whole system. Simulation results validate the efficacy of the proposed method in both single-talk and double-talk situations.

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Acoustic echo cancellation

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