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1、編號本科畢業(yè)設計多制式語音編碼及其DSP實現(xiàn)Multi-standardspeechcodingandDSPImplementation32摘要介紹了一種多制式語音編解碼器，在單片TMS320VC5409上完成4路話音的全雙工通信，并實現(xiàn)G.729a、CVSD、ADPCM算法之間的編碼轉(zhuǎn)換，給出了算法的軟硬件實現(xiàn)、算法的運算量及所占用的硬件資源。語音通信在現(xiàn)代通信中占有重要地位，它研究的是語音信號的高效、高質(zhì)量傳輸?shù)膯栴}，包括語音編碼、語音加密等內(nèi)容。雖然語音通信僅研究對語音信號進行壓縮傳輸?shù)葍?nèi)容，在理論上比語音合成與語音識別簡單，但是這一
2、領域仍然存在很多需要解決的問題，而且這項技術仍處于不斷發(fā)展之中。關鍵詞：多制式語音編解碼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目錄第一章緒論.......................................................................................11.1引言..............................................................................................11.2三種語音編碼簡介.......................................
6、...............................21.3論文研究目的和內(nèi)容..................................................................4第二章語音編碼的設計...................................................................52.1G.729a算法.........................................................................
7、.........52.2ADPCM算法..............................................................................92.3CVSD算法.................................................................................11第三章芯片和硬件系統(tǒng)設計..........................................................143.1DSP芯片TM
8、S320VC540912....................................................143.2硬件系統(tǒng)................
