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

EURASIP Journal on Audio, Speech, and Music Processing

Table 1 Performance comparison of different methods in terms of WSS for white noise-corrupted speech

SNR (dB)	Universal threshold	WPF algorithm	WTHSKL method	Proposed method
15	37	24.52	22.34	18.87
10	44.77	37.6	34.9	26.5
5	53.9	46.2	46.08	34.3
0	66.63	59.2	60.66	43.65
-5	83.8	71.4	76.92	52.45
-10	96	87.5	89.29	65.2
-15	104.44	91.9	90.37	77.20