Variable Step-Size Method Based on a Reference Separation System for Source Separation

Table 1

Average PI and execution time for various methods under different level of noise.

Separation Methods	Average PI					Average Execution Time (s)
	Signal to Noise Ratios (dB)
	0	5	10	20	30
Optimized EASI ()	0.244	0.229	0.192	0.151	0.137	0.162
NGA ()	0.293	0.238	0.216	0.175	0.155	0.043
VS-NGA	0.305	0.203	0.184	0.148	0.143	0.073
VS-S-NGA	0.263	0.141	0.117	0.092	0.081	0.134
Ou’s Method	0.269	0.132	0.114	0.071	0.066	0.241
Proposed Algorithm	0.278	0.156	0.121	0.076	0.064	0.125
Fast-ICA	0.458	0.183	0.129	0.056	0.025	0.551