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. 2015 Dec 17;19:2331216515617917. doi: 10.1177/2331216515617917

Table 4.

Pairwise Comparison of Algorithm Performance.

Noise Algorithm 1 NoPre 2 ADM 3 ADM + coh 4 SCNR 5 fixed MVDR 6 adapt MVDR 7 com PF (fixed MVDR) 8 com PF (adapt MVDR)
20T 2 ADM 3.5**
3 ADM + coh 3.4 −.1
4 SCNR −.8 −4.3*** −4.2**
5 fixed MVDR 6.9*** 3.4* 3.5 7.7***
6 adapt MVDR 6.4** 2.9 3.1 7.3*** −.5
7 com PF (fixed MVDR) 6.7*** 3.2* 3.3* 7.5*** −.2 .2
8 com PF (adapt MVDR) 6.0*** 2.5** 2.6* 6.8*** −.9 −.4 −.7
9 ind PF (adapt MVDR) 5.7** 2.3 2.4* 6.6*** −1.1 −.7 −.9 −.3
CAN 2 ADM 3.5**
3 ADM + coh 3.5* .0
4 SCNR −1.3 −4.8** −4.8***
5 fixed MVDR 5.2*** 1.7 1.7 6.5***
6 adapt MVDR 5.3** 1.8 1.8 6.6* .1
7 com PF (fixed MVDR) 5.0** 1.6 1.6 6.4** −.2 −.2
8 com PF (adapt MVDR) 3.3 −.2 −.2 4.7 −1.9 −1.9 −1.7
9 ind PF (adapt MVDR) 4.3** .8 .8 5.6*** −1.0 −1.0 −.8 .9
SCT 2 ADM 4.6
3 ADM + coh 5.0 .5
4 SCNR .1 −4.5 −5.0
5 fixed MVDR 4.8** .2 −.3 4.7
6 adapt MVDR 15.2*** 10.6*** 10.2* 15.1*** 10.4**
7 com PF (fixed MVDR) 6.9** 2.3 1.9 6.8* 2.1 −8.3**
8 com PF (adapt MVDR) 14.1*** 9.6*** 9.1* 14.1*** 9.4** −1.1 7.2**
9 ind PF (adapt MVDR) 14.7*** 10.2** 9.7 14.7*** 10.0** −.5 7.8* .6

Note. Numbers indicate differences in SRT50 in dB. Positive values correspond to a better performance of the algorithm in the respective row. Statistically significant differences are marked in bold font, asterisks denote level of statistical significance for respective differences. 20T = 20-talker babble; CAN = cafeteria ambient noise; SCT = single competing talker. ADM = adaptive differential microphones; ADM + coh = Adaptive differential microphones in combination with coherence-based noise reduction; SCNR = single-channel noise reduction; MVDR = minimum variance distortionless response; fixed MVDR = fixed binaural MVDR beamformer; adapt MVDR = adaptive binaural MVDR beamformer; com PF (fixed MVDR) = common postfilter based on fixed binaural MVDR beamformer; com PF (adapt MVDR) = common postfilter based on adaptive binaural MVDR beamformer; ind PF (adapt MVDR) = individual postfilter based on adaptive binaural MVDR beamformer.

***

p < .00003. **p < .00028. *p < .0014.