ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

An hmm-based cepstral-domain speech enhancement system

C. W. Seymour, M. Niranjan

This paper describes a method of enhancing speech corrupted by additive uncorrelated noise. The approach adopted is to use cepstral-domain hidden Markov models to determine statistics of the clean speech and noise processes. A compensated model of speech corrupted by noise is generated using parallel model combination. MMSE and linear non-homogeneous estimators of the clean speech signal are derived. The enhancement system gives natural-sounding speech without the artifacts introduced by systems such as spectral subtraction. HMM recognition tests performed on the enhanced speech using the NOISEX-92 database show a significant reduction in error rate.


Cite as: Seymour, C.W., Niranjan, M. (1994) An hmm-based cepstral-domain speech enhancement system. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 1595-1598

@inproceedings{seymour94_icslp,
  author={C. W. Seymour and M. Niranjan},
  title={{An hmm-based cepstral-domain speech enhancement system}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={1595--1598}
}