基于g.723.1的以太網(wǎng)傳輸系統(tǒng)的設計與實現(xiàn)

1、電子科技大學碩士學位論文基于G.723.1的以太網(wǎng)傳輸系統(tǒng)的設計與實現(xiàn)姓名：袁長輝申請學位級別：碩士專業(yè)：信號與信息處理指導教師：周正歐20060501ABSTRACTABSTRACTInrecentyearswiththeindepthapplicationanddevelopmentofInternet，traditionalanalogvoicetransmissionhasbeenfarfrommeetingthedemando

2、fthedigitalageTherefore，someresearchaboutreducingtransmissionratebycompressingdigitalanalogvoicecameintobeinganddevelopingrapidlyAtpresent，therapiddevelopmentoftheInternetisleadinganotherdigitalizerevolutionItisthetrendo

3、fthetimestotransmitvoice，images，graphics，videodataandmultimediainformationinaunifieddigitalnetworkplatformVoiceoverIewhichIntegrateingvoicecodingtechnologyandthenetworktechnologyhasemergedtherefromInadditiontoit’Sadvanta

4、ges：usedpacketswitchingtechnologyincreasingutilizationoftransmisonlineslowercommunicationcosts，itcanalsoachieveavalueaddedbusinessandintegrateswithmultimediatechnologywhichincreaseitsadvantagedandbroaderit’Sdevelopingpro

5、spectButontheoutcomeofcurrentIPtelephonythevastmajorityofthenetworktelephonehadtousemultimediaPCtoachievingtransmissionthroughitsnetworkinterface，whichineffectincreasedIPtelephonyhardwareCOSTSThisvoicecompressionandnetwo

6、rktransmissionsystemistoaddresstheshortcomingsofexistingIPtelephoneandtoachievingthesecessionofPCThisdesignaccomplishingahardwaredesignofadigitalvoicecompression／decompressionsystem，whichisbasedonG7231voicecompressionsta

7、ndardandmakeittobeabletocommunicationthroughnetworkThefollowingdissertationwillpresentationthedetailsofthesystemdesign，developmentprocessanditscomposition，includingvoiceprocessingmodule，networkmodule，controlandinterfacem

8、oduleThedevelopmentofvoicecodingtechnologyseveraltypicalvoicecompressionalgorithmsandthefundamentalprinciplesofvoicetransmissionthroughInternetandsomerelatedstandards，keytechnologyisintroducedfirstlyandthenindepthexplain

9、ingthesystemprocessthroughanalysizingthesystemprinciplesandcompositionFinallyexplaintherealizationofthedesignandthetestsofthesystemI’mresponsiblefortheoverallsystemdesign，hardwarecircuitdesignandsoftwareprogramdesignAlon