| 摘要: |
| 作为 3GPPWCDMA的语音编码 (SpeechCoding)候选方案 ,自适应多速率 (AMR)语音编码是一种多模式集成的ACELP类语音编码方案。本文根据该编码方案的标准 ,分析了其方案实现中的关键算法 :高性能码本设计、高效码本搜索算法、多级矢量量化技术、预处理算法的简化等。最后 ,设计了定点ANSI -C程序对AMR语音编码算法各部分的复杂度进行了测算 |
| 关键词: 第三代移动通信,语音编码,自适应多速率,码激励线性预测,计算复杂度,算法 |
| DOI：10.3969/j.issn.1001-893X. |
| 修订日期：2002-06-12 |
| 基金项目:爱力信合作项目 |
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| AMR Speech Coding Algorithm and its Complexity |
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| Abstract: |
| As a proposed speech coding plan for 3GPP WCDMA, Adaptive Multi-Rate(AMR) vocoder is a multimode integrated ACELP. According to the standard, a detail dissection of the core algorithm for the implementation of the vocoder is suggested, such as high-performing codebook design, codevector search,multileveled VQ technique, as well as simplification for the preprocess part.Finally, by utilizing the fixed-point ANSI-C algorithm simulating program, the authors compute and profile the complexity of operations with regard to each part of the whole algorithm. |
| Key words: G mobile communication,Speech coding,AMR,ACELP(Algebraic Code Excited Linear Prediction),Operation complexity,Algorithm |
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