多制式語(yǔ)音編碼及其dsp實(shí)現(xiàn)畢業(yè)設(shè)計(jì)

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1、本科畢業(yè)設(shè)計(jì)多制式語(yǔ)音編碼及其DSP實(shí)現(xiàn)Multi-standardspeechcodingandDSPImplementation摘要介紹了一種多制式語(yǔ)音編解碼器，在單片TMS320VC5409上完成4路話音的全雙工通信，并實(shí)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(shí)現(xiàn)、算法的運(yùn)算量及所占用的硬件資源。語(yǔ)音通信在現(xiàn)代通信中占有重要地位，它研究的是語(yǔ)音信號(hào)的高效、高質(zhì)量傳輸?shù)膯?wèn)題，包括語(yǔ)音編碼、語(yǔ)音加密等內(nèi)容。雖然語(yǔ)音通信僅研究對(duì)語(yǔ)音信號(hào)進(jìn)行壓縮傳輸?shù)葍?nèi)容，在理論上比語(yǔ)音合成與語(yǔ)音識(shí)別簡(jiǎn)單，但是

2、這一領(lǐng)域仍然存在很多需要解決的問(wèn)題，而且這項(xiàng)技術(shù)仍處于不斷發(fā)展之中。關(guān)鍵詞：多制式語(yǔ)音編解碼TMS320VC5409G.729aCVSDADPCMABSTRACTIntroducedamulti-standardvoicecodecs,asingleTMS320VC5409tocompletethefour-wayfull-duplexvoicecommunication,andtoachieveG.729a,CVSD,ADPCMalgorithmbetweentheencodingconversion,thealgorithm

3、isgiventhehardwareandsoftwaretoachieve,Thealgorithmforcomputingcapacityandoccupiedbythehardwareresources.Voicecommunicationsinmoderncommunicationoccupiesanimportantposition,itisthevoicesignalontheefficient,high-qualitytransmissionproblems,includingvoicecoding,voiceen

4、cryption,andothercontent.Althoughvoicecommunicationsonlyonthecompressedvoicesignaltransmission,etc.,intheorythanvoicesynthesisandvoicerecognitionsimple,buttherearestillmanyareasthatneedtoresolvetheissue,butthetechnologyisstillincontinuousdevelopment.Keywords:Multi-st

5、andardvoicecodecsTMS320VC5409G.729aCVSDADPCM目錄第一章緒論.......................................................................................11.1引言..............................................................................................11.2三種語(yǔ)音編碼簡(jiǎn)介.................

6、.....................................................21.3論文研究目的和內(nèi)容..................................................................4第二章語(yǔ)音編碼的設(shè)計(jì)...................................................................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(shè)計(jì)....................................

8、......................143.1DSP芯片TMS320VC540912....................................................143.2硬件系統(tǒng)........................