Sub-band based histogram equalization in cepstral domain for speech recognition.
Vikas JoshiRaghavendra BilgiSrinivasan UmeshLuz GarcíaM. Carmen BenítezPublished in: Speech Commun. (2015)
Keyphrases
- speech recognition
- subband
- histogram equalization
- discrete wavelet transform
- image enhancement
- hidden markov models
- contrast enhancement
- high frequency
- language model
- wavelet transform
- pattern recognition
- automatic speech recognition
- multiresolution
- image compression
- low frequency
- wavelet coefficients
- speech signal
- gray scale
- speech synthesis
- filter bank
- speaker identification
- speech recognizer
- frequency domain
- noisy environments
- wavelet decomposition
- speech recognition systems
- wavelet domain
- feature vectors
- multiscale
- image processing
- gaussian mixture model
- gray level
- bit rate
- dynamic range
- frequency band
- image quality
- probabilistic model
- keywords