| Class | Description |
|---|---|
| AbstractFeatureExtractor |
Abstract base class for windowed feature extractors like DeltasFeatureExtractor, ConcatFeatureExtractor
or S3FeatureExtractor.
|
| BatchAGC |
Applies automatic gain control (CMN)
|
| BatchCMN |
Applies cepstral mean normalization (CMN), sometimes called channel mean normalization, to incoming cepstral data.
|
| BatchVarNorm |
Applies cepstral variance normalization (CVN), so that each coefficient
will have unit variance.
|
| ConcatFeatureExtractor |
This component concatenate the cepstrum from the sequence of frames according to the window size.
|
| DeltasFeatureExtractor |
Computes the delta and double delta of input cepstrum (or plp or ...).
|
| FeatureTransform |
Implements a linear feature transformation transformation.
|
| FrameDropper |
Drops certain feature frames, usually to speed up decoding.
|
| KaldiDeltasFeatureExtractor | |
| LiveCMN |
Subtracts the mean of all the input so far from the Data objects.
|
| S3FeatureExtractor |
Computes the delta and double delta of input cepstrum (or plp or ...).
|