Improving speaker discrimination of target speech extraction with time-domain SpeakerBeam
Table 2: SDR (dB) on the MC-WSJ0-2mix corpus. Bold-fonts indicate best performance (except for oracle).
['(1)', 'Mixture', 'IPD -', 'FF 0.17', 'MM 0.16', 'FM 0.16', 'avg 0.16']
We confirmed that TasNet with oracle target speaker selection (row (2)) achieved high SDR performance. Moreover, TasNet with input combination of IPD features (row (3)) further improved performance especially for mixtures of same-gender speakers. These results can be considered an upper-bound for TasNet-based target speaker extraction. We omitted results with the internal IPD combination for TasNet, as it performed worse than using IPD features at the input.