Table 3 Word accuracy (WA) of ASR tests for RASTA-PLP features, estimated uncertainties. Here, the algorithms Phase1 and Phase2 utilize the parameters defined in Section 7.3.2, the entries with the heading Amplitude correspond with the mask given in Section 7.3.1, and the two interference-based strategies IB and IBPE are specified in Section 7.3.3. The two robust recognition strategies are abbreviated by MI for modified imputation and UD for uncertainty decoding.
| Â | Phase1 | Phase2 | Amplitude | IB | IBPE | |||||
|---|---|---|---|---|---|---|---|---|---|---|
No. of speakers | 2 | 3 | 2 | 3 | 2 | 3 | 2 | 3 | 2 | 3 |
no ICA | 31.4 | 6.3 | 31.4 | 6.3 | 31.4 | 6.3 | 31.4 | 6.3 | 31.4 | 6.3 |
only ICA | 58.0 | 48.0 | 63.1 | 52.7 | 63.1 | 52.7 | 63.1 | 52.7 | 63.1 | 52.7 |
| 15.1 | 16.7 | 16.4 | 17.1 | 52.1 | 51.9 | 02.2 | 00.9 | 38.9 | 30.7 |
| 52.8 | 50.7 | 66.0 | 59.1 | 67.2 | 60.3 | 66.0 | 56.5 | 67.7 | 59.5 |
| 60.0 | 58.0 | 73.4 | 69.1 | 72.9 | 68.8 | 71.4 | 67.1 | 72.9 | 69.2 |
