An improved method for AMR-WB speech codec

DOI

10.2991/iccia.2012.118How to use a DOI?

Keywords

AMR, speech codec, autocorrelation, look-ahead,Linear Prediction

Abstract

an improved method is proposed to skip the look-ahead period in this paper. The improved method uses the autocorrelation algorithm to calculate the Linear Prediction (LP) coefficients and then the LP coefficients are employed to extrapolate new samples for replacing the look-ahead samples. To evaluate the quality of this method, perceptual evaluation of speech quality (PESQ) and the A/B listening test method are designed for the objective evaluation and subjective evaluation. The reconstructed quality of the modified method is near to the original AMR codec, at the same time, the delay of the improved method is lower 5ms than the original method.

Copyright

© 2013, 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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TY  - CONF
AU  - Chunling Zhang
AU  - Shenghui Zhao
AU  - Hongyuan Xiao
AU  - Jing Wang
AU  - Jingming Kuang
PY  - 2014/05
DA  - 2014/05
TI  - An improved method for AMR-WB speech codec
BT  - Proceedings of the 2012 2nd International Conference on Computer and Information Application (ICCIA 2012)
PB  - Atlantis Press
SP  - 490
EP  - 493
SN  - 1951-6851
UR  - https://doi.org/10.2991/iccia.2012.118
DO  - 10.2991/iccia.2012.118
ID  - Zhang2014/05
ER  -