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Table 4 Off main-lobe performance comparison - correlation between the proposed PR-DRR measure (19) for DRR estimation, and CDR-based DRR estimator [10], with the true DRR measure

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

Input type

 

White noise

Speech signals

  

Correlation ref.

Correlation ref.

Test type

Algorithm

DRR

DRR

T 60=0.3 s,

PR-DRR

0.999

0.999

vs. increasing distance

CDR

0.999

0.998

T 60=1 s,

PR-DRR

0.999

0.999

vs. increasing distance

CDR

0.952

0.934

Distance =0.5 m,

PR-DRR

0.992

0.993

vs. increasing T 60

CDR

0.995

0.996

Distance =2 m,

PR-DRR

0.999

0.999

vs. increasing T 60

CDR

0.838

0.745

  1. The microphone array position is distributed in the room creating a source-receiver angle uniformly distributed from −30° to +30°. The receiver position is (x,y,z)=(1,2,1) m