EURASIP Journal on Advances in Signal Processing

Table 3 Off main-lobe performance comparison - correlation between the (temporal mean) proposed power ratio (PR) (18), SRMR, and EV values, with Clarity (C50), PESQ, and P.563 algorithms

From: Microphone array power ratio for quality assessment of reverberated speech

Input type		White noise	Speech signals
		Correlation ref.	Correlation ref.
Test type	Algorithm	C50	C50	PESQ	P. 563
T ₆₀=0.3 s,	PR	0.999	0.998	0.889	0.703
vs.	SRMR	−0.66	0.860	0.984	0.934
increasing distance	EV	−0.65	0.932	0.993	0.871
T ₆₀=0.6 s,	PR	0.999	0.999	0.954	0.821
vs.	SRMR	0.399	0.958	0.992	0.938
increasing distance	EV	−0.50	0.981	0.989	0.891
Distance =0.5 m,	PR	0.946	0.948	0.926	0.573
vs.	SRMR	0.340	0.654	0.986	0.867
increasing T ₆₀	EV	0.369	0.640	0.980	0.893
Distance =2 m,	PR	0.966	0.965	0.947	0.696
vs.	SRMR	0.714	0.809	0.998	0.903
increasing T ₆₀	EV	−0.11	0.713	0.976	0.959

The receiver is mounted in (x,y,z)=(1,2,1) m, and the source-receiver angle is uniformly distributed from −30° to +30°

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