README.md

kaldifeats

• kaldifeats.commands:

A wrapper in python modules to invoke commad line tools of Kaldi, ensuring 100% reproducibility of kaldi features, of course.

• kaldifeats.signal:

Pure python implementations to perform stft. Actually, instead of Kaldi, it depends on scipy for some useful signal funciton, e.g. scipy.signal.get_window, but not using the highest function, scipy.signal.stft, scipy.signal.spectrogram.

• kaldifeats.feats:

Pure python modules for audio feature extractor, e.g. log-fbank-feats, mfcc, add-deltas.

Requirements

python3.6
scipy
numpy
kaldiio (pip install git+https://github.com/nttcslab-sp/kaldiio)

Ref

• https://github.com/scipy/scipy/blob/master/scipy/signal/spectral.py
• https://github.com/kaldi-asr/kaldi/blob/master/src/feat/feature-window.cc
• https://github.com/kaldi-asr/kaldi/blob/master/src/feat/feature-spectrogram.cc

Related projects

• https://github.com/librosa/librosa

  • Depends on scipy and audioread

• https://github.com/MTG/essentia

  • C++ implementation and python binding
  • Supports loader for audio file depending libavcodec/libavformat/libavutil/libavresample(FFmpeg/LibAv)
  • Not supporting Python3 (MTG/essentia#138)

• https://github.com/jameslyons/python_speech_features

  • Simple implementation