A novel embedded speech and audio codec based on ITU-T Recommendation G.722.1 - Details

Author：

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

Indexed by：

EI Scopus

Abstract：

This　paper　describes　an　embedded　speech　and　audio　codec　which　is　based　on　ITU-T　Recommendation　G.　722.1;　it　can　process　7　kHz　bandwidth　speech　and　audio　signal　at　scalable　bit　rates.　Based　on　the　G.722.1　of　ITU-T,　this　algorithm　adds　two　modules:　the　energy　ordering　of　sub-band　and　the　processing　of　bit-stream　truncation.　Furthermore,　it　does　some　modification　on　the　categorization　and　noise-fill　modules.　It　makes　sure　that　the　codec　could　produce　embedded　bit-stream,　so　this　codec　had　more　robustness　in　the　transmission.　The　test　results　by　ITU-　T　PESQ　show　that　this　codec　has　good　performance　as　G.　722.1　at　the　same　bit-rates.　©　2008　IEEE.

Keyword：

Signal processing Binary sequences

Author Community：

[ 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 ] [Li, Rui]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China