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

Table 2

Results of frequency-domain algorithms on AURORA2.

	Test A		Test B		Test C		A-B-C AVG
	C	M	C	M	C	M	C	M
LSA	76.83	87.02	77.06	85.24	78.97	88.48	77.62	86.91
LSA+gSNR	78.69	89.45	79.95	88.33	79.80	89.95	79.48	89.24
LSA+𝐺smooth	76.44	87.12	77.34	85.97	77.61	87.66	77.13	86.92
OMLSA	76.81	89.13	78.15	88.22	78.34	90.20	77.77	89.18
OMLSA+gSNR	77.28	89.88	79.00	89.13	78.10	90.23	78.13	89.75
OMLSA+𝐺smooth	75.49	88.88	77.77	88.59	76.49	89.56	76.58	89.01
baseline	65.00	88.11	69.89	89.09	65.87	89.18	66.92	88.79