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Table 7 Performance comparison in terms of PESQ scores in the presence of car noise

From: A semisoft thresholding method based on Teager energy operation on wavelet packet coefficients for enhancing noisy speech

SNR (dB) MMSE Spectral subtraction Wiener filtering Proposed method
15 3 2.99 2.7 3.06
10 2.72 2.6 2.5 2.82
5 2.6 2.49 2.24 2.68
0 2.2 2.2 1.86 2.31
-5 1.9 1.8 1.6 2.19
-10 1.6 1 1.32 2.1
-15 1.42 1.39 1.26 1.94