Fig. 11
From: An overview on optimized NLMS algorithms for acoustic echo cancellation
Performance of the algorithms during near-end variations. Misalignment of the NLMS (for different values of α), NPVSS-NLMS, JO-NLMS, and OSS-NLMS-id algorithms. The NPVSS-NLMS and JO-NLMS algorithms use the estimated \(\widehat {\sigma }_{v}^{2}(n)\) from (61). The input signal is speech, L=512, and SNR = 20 dB. The SNR decreases from 20 to 10 dB between times 10 and 20 s and the near-end speech appears between times 25 and 30 s (without using a DTD)