Comparative Evaluation of Single-Channel MMSE-Based Noise Reduction Schemes for Speech Recognition

Table 4

Results of frequency-domain algorithms on AURORA4.

	Set 01		Set 02–07		Set 08		Set 09–14		Average
	C	M	C	M	C	M	C	M	C	M
LSA	87.92	74.48	52.07	64.48	77.08	74.99	39.00	55.15	50.82	62.16
LSA+gSNR	88.73	77.78	60.71	72.19	81.36	78.20	49.17	65.48	59.24	70.14
LSA+𝐺smooth	88.14	77.69	54.11	65.38	76.88	74.22	40.73	57.51	52.43	63.52
OMLSA	88.32	79.08	56.31	69.27	77.20	76.24	43.60	61.59	54.64	67.18
OMLSA+gSNR	88.99	79.74	61.04	72.66	79.77	78.82	49.06	65.93	59.24	70.72
OMLSA+𝐺smooth	88.62	79.12	57.60	70.52	75.42	75.47	44.67	63.22	55.55	68.36
Baseline	89.80	84.53	54.57	74.57	77.05	81.62	42.82	67.68	53.65	72.83