| SA-AMR算法性能分析与研究 |
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| 引用本文： | 吕锋,程敏. SA-AMR算法性能分析与研究[J]. 现代电子技术, 2008, 31(13) |
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| 作者姓名： | 吕锋 程敏 |
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| 作者单位： | 武汉理工大学信息工程学院,湖北武汉,430070 |
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| 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.
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| 关 键 词： | 自适应多速率 源自适应多速率 语音活动性检测 GSM系统容量 载干比 算法 性能分析 研究 Algorithm Research Analysis 语音质量 模式 编码速率 测试结果 性能比较 无线通信系统 原理 编解码 阐述 自适应 系统容量 |
Performance Analysis and Research of SA-AMR Algorithm |
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| LV Feng,CHENG Min. Performance Analysis and Research of SA-AMR Algorithm[J]. Modern Electronic Technique, 2008, 31(13) |
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| Authors: | LV Feng CHENG Min |
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| Abstract: | Based on existing AMR codecs,a new technique named Source-Adaptive Adaptive Multi-Rate(SA-AMR) is introduced 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. |
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| Keywords: | adaptive multi-rate SA-AMR voice activity detection GSM system capacity CIR |
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