A Novel Frame Error Concealment Scheme Based on Gain Control for TCX Audio Codec

被引：0
|
作者：
XIANG Kai [1 ,2 ]
HU Ruimin [1 ]
机构：
[1] School of Computer,Wuhan University
[2] School of Information Management,Hubei University of Economics
来源：
Wuhan University Journal of Natural Sciences | 2016年 / 21卷 / 02期
基金：
国家高技术研究发展计划(863计划);
关键词：
frame error concealment; audio codec; transform coded excitation(TCX);
D O I：
暂无
中图分类号：
TN912.3 [语音信号处理];
学科分类号：
0711 ;
摘要：
A novel frame error concealment scheme is proposed to improve the decoded audio quality of the receiver for transform coded excitation(TCX) audio codec. This scheme, which is a gain control approach based on the stability of linear predictive coding(LPC) filter, predicts the lost frames by utilizing the linear spectrum frequency and different continuous attenuation factor of different kinds of lost frames. Signal noise ratio(SNR) test and multiple stimuli with hidden reference and anchor(MUSHRA) test are conducted to evaluate the performance of this approach in adaptive multi-rate wideband plus(AMR-WB+) audio codec. Compared with the original frame error concealment scheme, our scheme achieves better audio recovery quality in AMR-WB+ audio codec.
引用
收藏
页码：133 / 138
页数：6
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