基于dsp的g.729語音編碼的研究

1、南京理工大學碩士學位論文基于DSP的G.729語音編碼的研究姓名：張慶申請學位級別：碩士專業(yè)：通信與信息系統指導教師：蔡征宇20060601南京理工大學硬士論文纂千DSP的G729語音編碼的研究AbstractLanguageisanimportantmca_qstlmtpeopleUSetocommunicate，themostfamiliardataformisspeechinthecorrespondencesystemAlong

2、withthedevelopmentofthemovecorrespondenceandIn_ternet，speechcorrespondencetechniqueisalsenewedconstantlyThetransmissionandsavingofthedigitalspeechsignalisbetterthananalogsignai’sonsecurity，antiinterference，andsoOILThisle

3、chniqueisconvenienLandcanmakesigrlaIbeeasytokeepsecretandthepriceischeap，SOthedigitalsignaltakesthespecificweightincommunication，thecodetechniquealsodevelopimmediatelyandcontinuouslyTheITU—T(TelecommunicationStandardizat

4、ionSector)isapermanentorganoftheInternationalTelecommunicationUnionOTU)RecommendationG729waspreparedbyITUTinNovemberof1995ThisRecommendationcontainsthedescriptionofanalgorithmforthecodingofspeechsignalsat8kbit／susingConj

5、ugate—StructureAlgebraicCodeExcitedLinear—Prediction(cs—ACELP)Thiscoderisdesignedtooperatewithadigitalsignalobtainedfromtheanalogueinputsignal，thensamplingitat8000Hzfollowedbyconversionto16bitlinearPCMfortheinputtotheenc

6、oderTheoutputofthedecodershouldbeconvertedbacktoananaloguesigualbysimilarmeansThetextdoesthedetailedintroductiontothealgorithmstructureandthetheoryofG729，introducestheC6711DSKandexplainstheprocessofcodingBytest，theresult