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汉语连续语音识别系统的研究与实现(3)

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语音信号处理相关论文

Abstract

Speechrecognitionisatechnologythatcanextractcharactersymbolsfromthespeechsignalthroughcomputerprocessing.Chinesecontinuousspeech

arerecognitionsomehasbeeninresearchedforalmost60yearsathomeandabroad.Althoughthereachievements

continuous

speechspeechrecognitionresearch,atechnologiescalllotofproblemsneedtobeCallresolved.Existingcommunicatewim

speechrecognitionnotreachthetargetthathumanmachinebynaturalspeech.Largevocabulary,speaker-independentcontinuous

recognitionisstillthedifficultyandkeystoneofspeechrecognition.

continuousspeechThemainstudyofthispaperisthekeytechnologiesofChinese

recognition.Firstly

ofspeechthepaperintroducestheprinciplesofspeechrecognition,thecompositionthenrecognition

thefunctionssystemandandthebasicknowledgeofChineseSpeech.Andintroduceskeytechnologiesofpre-processing、featureextraction、pattern

ofspeechmatchingand

inviewof

follows:post-processingexistedrecognition.Improvedmethodshavebeenproposedareasproblemsintraditionalmethods.Inthispaper,themainworks

1)Amedium-vocabulary,speaker-independentCllinesecontinuousspeech

Visualrecognitionsystemisachievedonapersonalcomputer,usingMicrosoft

onC++,MATLAB,MicrosofiSQLServerandothertools,experimentsaremade

unit,thethesystem.Thesystemchoosestheinitialandfinalas

theDTWasrecognitionMFCCasfeatureparameters,andusingrecognitionmodel.

accuracyofI/F2)The

segmentation

continuoussegmentationhasgreatinfluenceonsystem,currentI/Fmethodsachievehighdegreeofaccuracyinnewmethodnon continuousspeech,butfallinofspeech.Inthispaper,abasedonentropyandtheformantenergy

FF.Chinesevowelsisproposed,whichcanaccuratelysegmentthe

long3)Thespeechrecognitionsystem、ⅣiththetraditionalDynamicTimeWarpingtechnologyhasgreatamountofcalculationandresponse

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