摘要
在AMR的基础上介绍了一种用来提高系统容量的源自适应(SA-AMR)算法。简要阐述了算法编解码原理,分析了在无线通信系统中引入SA-AMR技术的优点,并与AMR进行性能比较,测试结果表明:SA-AMR编码速率和模式可变,能够提高语音质量和发射稳健性,有效增大系统容量,性能优于AMR。
Based on existing AMR codecs, a new technique named Source- Adaptive Adaptive Multi- Rate（SA- AMR） is introdticed to improve system capacity in this paper. It briefly describes the SA - AMR speech coding and decoding principle and analyses the improvement of using this technique. And performance analysis comparison is described between SA - AMR and AMR. Finally,the result is presented that SA - AMR codec, with variable code rate and mode, seems to have better overall performance than the AMR codec and can be used to improve speech quality and transmission robustness.
出处
《现代电子技术》
2008年第13期12-14,18,共4页
Modern Electronics Technique
