多制式语音编码及其dsp实现

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1、编号本科毕业设计多制式语音编码及其DSP实现Multi-standardspeechcodingandDSPImplementation32摘要介绍了一种多制式语音编解码器，在单片TMS320VC5409上完成4路话音的全双工通信，并实现G.729a、CVSD、ADPCM算法之间的编码转换，给出了算法的软硬件实现、算法的运算量及所占用的硬件资源。语音通信在现代通信中占有重要地位，它研究的是语音信号的高效、高质量传输的问题，包括语音编码、语音加密等内容。虽然语音通信仅研究对语音信号进行压缩传输等内容，在理论上比语音合成与语音识别简单，但是这一

2、领域仍然存在很多需要解决的问题，而且这项技术仍处于不断发展之中。关键词：多制式语音编解码TMS320VC5409G.729aCVSDADPCM32ABSTRACTIntroducedamulti-standardvoicecodecs,asingleTMS320VC5409tocompletethefour-wayfull-duplexvoicecommunication,andtoachieveG.729a,CVSD,ADPCMalgorithmbetweentheencodingconversion,thealgorithmisgive

3、nthehardwareandsoftwaretoachieve,Thealgorithmforcomputingcapacityandoccupiedbythehardwareresources.Voicecommunicationsinmoderncommunicationoccupiesanimportantposition,itisthevoicesignalontheefficient,high-qualitytransmissionproblems,includingvoicecoding,voiceencryption,and

4、othercontent.Althoughvoicecommunicationsonlyonthecompressedvoicesignaltransmission,etc.,intheorythanvoicesynthesisandvoicerecognitionsimple,buttherearestillmanyareasthatneedtoresolvetheissue,butthetechnologyisstillincontinuousdevelopment.Keywords:Multi-standardvoicecodecsT

5、MS320VC5409G.729aCVSDADPCM32目录第一章绪论.......................................................................................11.1引言..............................................................................................11.2三种语音编码简介.......................................

6、...............................21.3论文研究目的和内容..................................................................4第二章语音编码的设计...................................................................52.1G.729a算法.........................................................................

7、.........52.2ADPCM算法..............................................................................92.3CVSD算法.................................................................................11第三章芯片和硬件系统设计..........................................................143.1DSP芯片TM

8、S320VC540912....................................................143.2硬件系统................