The featxtra toolbox lists a set of front-end tools and Signal Processing functions for Kaldi.
The toolbox includes:
- feature extraction for speech signals
- Gammatone Frequency Representation, Gammatone Frequency Cepstral Coefficients
- Gabor Features
- DCT features (apply on ltsv, voicing stream)
- Voice Activity Detection
- additional signal filter operations
- featbin/compute-gtf-feats
- extract Gammatone Frequency Representation (GTF)
- extract Gammatone Frequency Cepstral Coefficients (GFCC)
- featbin/compute-gabor-feats
- extract Gabor Features (GBF)
- featbin/compute-dct-feats
- extract DCT Features from time domain signal
- featbin/apply-arma
- apply Auto-Regressive Moving Average (ARMA) filtering on a spectral representation (e.g GTF )
- featbin/apply-ltsv
- apply Long-Term Spectral Variabilityi (LTSV) stream on spectral representation (e.g GTF )
- featbin/apply-vad
- apply Voice Activity Detection (VAD) using voicing and LTSV probability
- featbin/extract-dims
- extract specified dimension range out of a feature matrix
- feat/feature-gtf
- GTF and GFCC feature implementation code
- transform/featxtra-functions
- additional signal processing functions