feature-functions.cc File Reference
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 This code computes Goodness of Pronunciation (GOP) and extracts phone-level pronunciation feature for mispronunciations detection tasks, the reference:


void ComputePowerSpectrum (VectorBase< BaseFloat > *waveform)
void ComputeDeltas (const DeltaFeaturesOptions &delta_opts, const MatrixBase< BaseFloat > &input_features, Matrix< BaseFloat > *output_features)
void ComputeShiftedDeltas (const ShiftedDeltaFeaturesOptions &delta_opts, const MatrixBase< BaseFloat > &input_features, Matrix< BaseFloat > *output_features)
void InitIdftBases (int32 n_bases, int32 dimension, Matrix< BaseFloat > *mat_out)
void SpliceFrames (const MatrixBase< BaseFloat > &input_features, int32 left_context, int32 right_context, Matrix< BaseFloat > *output_features)
void ReverseFrames (const MatrixBase< BaseFloat > &input_features, Matrix< BaseFloat > *output_features)
void SlidingWindowCmnInternal (const SlidingWindowCmnOptions &opts, const MatrixBase< double > &input, MatrixBase< double > *output)
void SlidingWindowCmn (const SlidingWindowCmnOptions &opts, const MatrixBase< BaseFloat > &input, MatrixBase< BaseFloat > *output)
 Applies sliding-window cepstral mean and/or variance normalization. More...