A novel super-wideband embedded speech and audio codec based on ITU-T Recommendation G.729.1 - 文章详情页

作者：

Jia, Mao-Shen (Jia, Mao-Shen.) | Bao, Chang-Chun (Bao, Chang-Chun.) (学者：鲍长春) | Liu, Xin (Liu, Xin.) | Li, Rui (Li, Rui.)

收录：

EI Scopus

摘要：

This　paper　proposes　a　multi-layer　super　-widebandembedded　speech　and　audio　coding　algorithm　extending　bit　rates　from　36　to　64　kb/s　on　the　basis　of　ITU-T　Recommendation　G.729.1　with　a　multi-stage　coding　structure.　This　codec　consists　of　three　embedded　stages:　G.729.1　wideband　coding　operating　in　the　range　from　8　to　32　kb/s,　modified　Modulated　LappedTransform　(MLT)　coding　of　the　band　(7-14　kHz)　at　36,　40　&　48　kb/s　and　MDCT　transform　coding　for　wideband　residual　signal　at　56　and　64　kb/s.　In　addition,　some　methods　are　proposed　in　transform　coding　according　to　perception　significance.　The　objective　and　subjective　listening　tests　show　that　this　codec　has　good　performance　compared　with　reference　codec.

关键词：

Codes (symbols)

作者机构：

[ 1 ] [Jia, Mao-Shen]Speech and Audio Signal Processing Lab, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Bao, Chang-Chun]Speech and Audio Signal Processing Lab, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Liu, Xin]Speech and Audio Signal Processing Lab, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Li, Rui]Speech and Audio Signal Processing Lab, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

电子邮件地址：

jiamaoshen@emails.bjut.edu.cn

查看成果更多字段

成果类型
所属机构

所有年份指定年份从至