TABLE II.
STOI Improvements (in %) for a List of Features Averaged on a set of Test Noises (From [34])
| Feature | Matched noise | Unmatched noise | Cochannel | Average | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Anechoic | Sim. RIRs | Rec. RIRs | Anechoic | Sim. RIRs | Rec. RIRs | Anechoic | Sim. RIRs | Rec. RIRs | ||
| MRCG | 7.12 | 14.25 | 12.15 | 7.00 | 7.28 | 8.99 | 21.25 (13.00) | 22.93 (13.19) | 21.29 (12.81) | 12.92 |
| GF | 6.19 | 13.10 | 11.37 | 6.71 | 7.87 | 8.24 | 22.56 (11.87) | 23.95 (12.31) | 22.35 (12.87) | 12.71 |
| GFCC | 5.33 | 12.56 | 10.99 | 6.32 | 6.92 | 7.01 | 23.53 (14.34) | 23.95 (14.01) | 22.76 (13.90) | 12.50 |
| LOG-MEL | 5.14 | 12.07 | 10.28 | 6.00 | 6.98 | 7.52 | 21.18 (13.88) | 22.75 (13.54) | 21.71 (13.18) | 12.08 |
| LOG-MAG | 4.86 | 12.13 | 9.69 | 5.75 | 6.64 | 7.19 | 20.82 (13.84) | 22.57 (13.40) | 21.82 (13.55) | 11.91 |
| GFB | 4.99 | 12.47 | 11.51 | 6.22 | 7.01 | 7.86 | 19.61 (13.34) | 20.86 (11.97) | 19.97 (11.60) | 11.75 |
| PNCC | 1.74 | 8.88 | 10.76 | 2.18 | 8.68 | 10.52 | 19.97 (10.73) | 19.47 (10.03) | 19.35 (9.56) | 10.78 |
| MFCC | 4.49 | 11.03 | 9.69 | 5.36 | 5.96 | 6.26 | 19.82 (11.98) | 20.32 (11.47) | 19.66 (11.54) | 10.72 |
| RAS-MFCC | 2.61 | 10.47 | 9.56 | 3.08 | 6.74 | 7.37 | 18.12 (11.38) | 19.07 (11.19) | 17.87 (10.30) | 10.44 |
| AC-MFCC | 2.89 | 9.63 | 8.89 | 3.31 | 5.61 | 5.91 | 18.66 (12.50) | 18.64 (11.59) | 17.73 (11.27) | 9.87 |
| PLP | 3.71 | 10.36 | 9.10 | 4.39 | 5.03 | 5.81 | 16.84 (11.29) | 16.73 (10.92) | 15.46 (9.50) | 9.46 |
| SSF-II | 3.41 | 8.57 | 8.68 | 4.18 | 5.45 | 6.00 | 16.76 (10.07) | 17.72 (9.18) | 18.07 (8.93) | 9.09 |
| SSF-I | 3.31 | 8.35 | 8.53 | 4.09 | 5.17 | 5.77 | 16.25 (10.44) | 17.70 (9.40) | 18.04 (9.35) | 8.97 |
| RASTA-PLP | 1.79 | 7.27 | 8.56 | 1.97 | 6.62 | 7.92 | 11.03 (6.76) | 10.96 (6.06) | 10.27 (6.28) | 7.46 |
| PITCH | 2.35 | 4.62 | 4.79 | 3.36 | 3.36 | 4.61 | 19.71 (9.37) | 17.82 (8.45) | 16.87 (6.72) | 7.03 |
| GFMC | −0.68 | 7.05 | 5.00 | −0.54 | 4.44 | 4.16 | 5.04 (0.07) | 6.01 (0.33) | 4.97 (0.28) | 4.40 |
| WAV | 0.94 | 2.32 | 2.68 | 0.02 | 0.99 | 1.63 | 11.62 (4.81) | 11.92 (6.25) | 10.54 (1.05) | 3.89 |
| AMS | 0.31 | 0.30 | −1.38 | 0.19 | −2.99 | −3.40 | 11.73 (5.96) | 10.97 (6.76) | 10.20 (4.90) | 1.71 |
| PAC-MFCC | 0.00 | −0.33 | −0.82 | 0.18 | −0.92 | −0.67 | 0.95 (0.15) | 1.25 (0.26) | 1.17 (0.09) | −0.17 |
“Sim.” and “Rec.” Indicate Simulated and Recorded Room Impulse Responses. Boldface Indicates the Best Scores in Each Condition. In Cochannel (Two-Talker) Cases, the Performance is Shown Separately for a Female Interferer and Male Interferer (in Parentheses) with a Male Target Talker