forked from https://github.com/fgnt/nn-gev , follow the instructions therein for installation
extentions: beamformers (MVDR, GEV, GEV-BAN, Variable Span, SDW-MWF, rank-1 MWF with different constraints ) used in Rank-1 Constrained Multichannel Wiener Filter for Speech Recognition in Noisy Environments and ON SDW-MWF AND VARIABLE SPAN LINEAR FILTER WITH APPLICATION TO SPEECH RECOGNITION IN NOISY ENVIRONMENTS
Recognition results, see RESULTS for all
| CHiME4 official backend | without LM rescore | |||
| et-simu | et-real | et-simu | et-real | |
| Noisy | - | - | 14.15 | 23.52 |
| WDAS | 10.91 | 11.47 | 14.20 | 15.04 |
| MVDR | 5.93 | 7.30 | 8.70 | 10.31 |
| GEV-BAN | 6.29 | 7.25 | 9.17 | 10.48 |
| GEV | 6.98 | 7.14 | 10.01 | 10.53 |
| MWF | 10.81 | 12.92 | 12.54 | 16.16 |
| VS-rank1 | 4.15 | 7.35 | 6.37 | 10.22 |
| r1MWF-0 | 4.56 | 8.36 | 7.03 | 11.40 |
| r1MWF-1 | 4.59 | 8.34 | 7.07 | 11.44 |
| r1MWF-\mu_G | 5.34 | 7.27 | 8.00 | 10.33 |
| r1MWF-\mu_G-evd | 5.17 | 6.51 | 7.63 | 9.25 |
| r1MWF-\mu_G-gevd | 4.68 | 6.03 | 6.87 | 8.74 |
| gevd-SDW-MWF | 4.39 | 7.38 | - | - |
| gevd-GEV-BAN | 4.21 | 6.17 | - | - |
| gevd-GEV | 4.65 | 5.93 | - | - |