資源描述：
《低速率MELP語(yǔ)音編碼算法分析與DSP實(shí)現(xiàn)》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、重慶郵電大學(xué)碩士論文IIAbs仃actW池medevelopm肌tofcomm疵cationtecllll0109yatso11i班speecll'mep砒1唧t0lackof矗跚uencyresourCesbecomeInore肌dmorepromiIlent，especiallyiIlmeareaofvoice仃ansIIlissionandvoicestomge．iI’llereforc，howtoreducetIle仃；mSmissionofspeechsi弘2LlbaIl捌dtllandstoragec印aC時(shí)haSbeeIlmeta瑪etofscholars，ands
2、peeChcodiI培techn0109yplaysalliII】ponalltroleinaClli砒lgtllis90a1．speechcodiIlgtcChnologystiUoccupiesa11ilIlport鋤tpositioninmod鋤co刪mlIlications)rst鋤，andmelowbitratespeechcodingisam血researchdi刪ion．Tllisp印erconCenls0nmep血cipleandkeyteclm010舀esof而xcdexcit撕on1iIlearprediction《Ⅶ正P)SpeeChcompressionc
3、odecalgoriⅡlIll．Desi印aVe巧10wratecodiIlgschemewllichcodi】唱rateislowerⅡlall1kbpsb弱cdonMELPandmul廿覷吼ejonquantit撕VetecllIl010黟111ema湖ycompletedwork嬲f(shuō)ollows：7mspaperdiscussesmercsearchsi班丘cancecoII】lbilled謝mmeapplic撕onbac：k伊ouIldofspeechcodir培．Setsf．0mlmespeechcodingalgorimm’sprinCiple，cl弱si丘catio
4、n，pe而mlanCeevaluationme血odsandmedeVelopmentofstatusquoilldctail．hl仃oduces丘vekiIldsoflowbitratespeechco血galgoritllmsmatarecomrnoIllyused．TheUnitedStatesfederalstaIld枷2．4kbpsⅧLPvocodercombiIlesmcadv嘶sof位血tion2dlylinearpre(1iction(LPC)VocoderandInultibaIldeXcitation(MBE)a190rimm．Furmennoremeyadd
5、somenewtecllIl010百est0enhancet11ea190rimm，such嬲hybridexci切臟on，印嘶odicpulses，ad印tiVeSpectrLIIIleIlllaIlcement，pulsedispersion丘nerandresi血mh舭noIlic鋤plitudemodel．Theperf．omanCeofmesyIlm舐cspeeChgot舶m2．4kbpsMELPcodecalgoritllmisrespectiVelytestedbomin6bjectiVe趾dsubjective．Ononehand，coInparedmewaVef
6、omand丘。equencySpec饑瑚．ofsynthetic／0ri咖alspeechsi弘a1matc肌getmeobjectiveeValu撕on．0111tlleomerhand，wecallget州ec仉eevahIationbyme雒u血gtheMOSValueoftlles弘lmesizedspeechsignal．h1仃0duciIlgpitchsmooⅡl，balldp嬲svoicesmoomaIldaIliIIlpr0Vedhybridexcitationmetllodt00ptiIIlizethealgorimm．TheimproVedhybridexci
7、協(xié)0ngeIlerafionmemodisappliedtomest鋤dard2．4kbpsMELPalgoIi廿lIn．Thetestresuhss110wmatt11esyIlmesizcdspeech刪時(shí)isiInpr0Vedob訪ously．B硒edonmest肌dard2．4kbpsMELPa190rithm，Ⅱ1ispapereXploitmeshorttiIIlest撕onad夠ofspeechsi印al，meiIlter-肋meredlmdaIlcyandimro
