New Time-Frequency Vowel Quantization Enhanced by Subband Hierarchy.
Fraihat SalamHervé GlotinPublished in: SIGMAP (2008)
Keyphrases
- subband
- wavelet packet
- wavelet transform
- filter bank
- frequency domain
- image coder
- subband coding
- scalar quantization
- image compression
- subband image coding
- multiresolution
- lattice vector quantization
- transform coefficients
- wavelet decomposition
- wavelet coefficients
- bit rate
- high frequency
- feature vectors
- discrete wavelet transform
- adaptive quantization
- image coding
- wavelet coding
- wavelet domain
- low pass
- synthesis filters
- entropy coding
- wavelet image coding
- locally adaptive
- lifting scheme
- low frequency
- frequency band
- signal processing
- denoising
- quantization scheme
- perfect reconstruction
- reconstruction error
- transform coding
- low bit rate
- vector quantization
- multiscale
- image processing
- subband decomposition
- compression ratio
- bitstream
- visual quality
- similarity measure