Improvement in robustness of speech feature extraction method using sub-band based periodicity and aperiodicity decomposition.
Kentaro IshizukaNoboru MiyazakiTomohiro NakataniYasuhiro MinamiPublished in: INTERSPEECH (2004)
Keyphrases
- subband
- feature vectors
- wavelet packet
- filter bank
- wavelet transform
- multiresolution
- locally adaptive
- discrete wavelet transform
- wavelet coefficients
- wavelet decomposition
- image compression
- high frequency
- low frequency
- quadrature mirror
- speech recognition
- frequency domain
- bit rate
- low pass
- wavelet domain
- energy compaction
- lifting scheme
- multiscale
- feature set
- feature space
- contourlet transform