A New Improved Algorithm Of Speech Enhancement Based On MCRA And Noncausal A Priori SNR Estimator
- 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/).
Cite this article
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 -