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Table 10 Mean scores of SIG scale for different methods in the presence of car noise at a 5-dB SNR

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

Listener

Spectral subtraction

Wiener filtering

MMSE

Proposed method

1

3.7

3.1

4.3

4.8

2

3

2

4

3.5

3

3.5

3

3.5

5

4

1.5

1.5

3.5

5

5

3

2.5

4

5

  1. Performance comparison of the mean scores of SIG scale evaluated for different methods in the presence of car noise at a SNR of 5 dB.