自适应多速率宽带语音编码算法的研究与仿真实现  

Research and Simulation of Adaptive Multi-Rate Wideband Speech Coding Algorithm

作　　者：白国栋[1] 张雪英[1] 

机构地区：[1]太原理工大学信息工程学院,山西太原030024

出　　处：《太原理工大学学报》2008年第3期272-276,共5页Journal of Taiyuan University of Technology

基　　金：山西省自然科学基金资助项目(20051039)

摘　　要：介绍了一种用于第三代移动通信和数字宽带网络系统的AMR-WB(自适应多速率宽带)语音编码算法,对编解码算法的主要模块和特性进行了简要介绍。在深入分析和研究AMR-WB原理的基础上,对算法进行了仿真实现,并对合成语音质量进行了主观听觉测试和客观PESQ测试,测试结果表明12.65 kb/s以上模式的PESQ-MOS分值都超过了4.0,且合成语音具有良好的自然度和听觉舒适性,证明了该算法是一种高品质的语音编码算法。The Adaptive Multi-rate Wideband （AMR-WB） speech coding algorithm for the third generation mobile communication system and digital wideband network system was introduced in this paper. The major blocks and characteristic of AMR-WB coding algorithm were described. On basis of analyzing and studying the principle of AMR-WB, we simulated this algorithm. The subjective hearing and objective PESQ of synthesized speech quality is tested. The result presented the PESQ-MOS of seven modes （except 6.6 kb/s and 8.85 kb/s） all exceed 4.0, and the synthesized speech have good naturalness and hearing comfort. The test result proved that AMR-WB is a high quality speech coding technology.

关 键 词：自适应多速率宽带 语音编码 代数码激励线性预测 

分 类 号：TN912.3[电子电信—通信与信息系统]