Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering

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A New Improved Algorithm Of Speech Enhancement Based On MCRA And Noncausal A Priori SNR Estimator

Authors
Na Ying, Xuzhen Wang, Jianwei Liu, Qinfang Wang, Zhihua Jian, Qingbiao Yang
Corresponding Author
Na Ying
Available Online November 2014.
DOI
10.2991/meic-14.2014.284How to use a DOI?
Keywords
Speech enhancement; noncausal a prior SNR; BR-MCRA; MMSE-LSA; SNR
Abstract

In view of the Minimum Mean Square Error of Log-Spectral Amplitude estimator (MMSE-LSA) noise power spectrum estimation algorithm does not adapt to the actual non-stationary noise and the accuracy of the estimation of prior SNR is not high on the traditional logarithmic domain. However, most of the nonstationary noises are encountered in real world. This paper puts forward a new improved speech enhancement algorithm of MMSE-LSA. Fist, it uses Minima Controlled Recursive Averaging(MCRA) to estimate noise which can track non-stationary effectively. Then combined with non-causal prior SNR estimation, it has higher accuracy of estimation of actual speech power spectrum, eliminating noise further. The simulation results show that under the non-stationary noise, the effect of restrain background noise and music noise residual has large improvement by the improved algorithm, the signal-to-noise ratio and the voice quality have been improved. In particular it is clear that the proposed algorithm has an improved capability to retain low amplitude voiced speech components in low SNR conditions.

Copyright
© 2014, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
Series
Advances in Engineering Research
Publication Date
November 2014
ISBN
10.2991/meic-14.2014.284
ISSN
2352-5401
DOI
10.2991/meic-14.2014.284How to use a DOI?
Copyright
© 2014, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Na Ying
AU  - Xuzhen Wang
AU  - Jianwei Liu
AU  - Qinfang Wang
AU  - Zhihua Jian
AU  - Qingbiao Yang
PY  - 2014/11
DA  - 2014/11
TI  - A New Improved Algorithm Of Speech Enhancement Based On MCRA And Noncausal A Priori SNR Estimator
BT  - Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 1263
EP  - 1266
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-14.2014.284
DO  - 10.2991/meic-14.2014.284
ID  - Ying2014/11
ER  -