A Novel Embedded Speech and Audio Codec Based on ITU-T Recommendation G.722.1

摘要：

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 ITUT PESQ show that this codec has good performance as G.722.1 at the same bit-rates.

作者: Mao-shen JIA Chang-chun BAO Rui LI

作者单位: Speech and Audio Signal Processing Lab,School of Electronic Information and Control Engineering,Beijing University of Technology,Beijing 100124,China

会议类型: 国际会议

会议名称: 9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-26（万方平台首次上网日期，不代表论文的发表时间）