Plain C implementataion of the Kaldi online feature extractor using FFTW.
Produces identical output to kaldifeat and kaldi-native-fbank.
See bench.cpp. Wall-clock time to compute features for 1000 second waveform, averaged over 10 runs.
| Implementation | Time (Seconds) |
|---|---|
| kali-native-fbank | 0.4978459 |
| knf | 0.3398971 |
See bench.py. Wall-clock time to compute features for 1000 second waveform:
| Implementation | Time (Seconds) |
|---|---|
| kaldifeat | 10.6698 |
| kali-native-fbank | 0.7778 |
| knf | 0.3258 |