基于紙介質(zhì)的語音存取系統(tǒng)的研究與設(shè)計(jì).pdf

1、V771665學(xué)拉代碼：10246學(xué)號(hào)t022021140後旦大學(xué)碩士學(xué)位論文基于紙介質(zhì)的語音存取系統(tǒng)的研究與設(shè)計(jì)院專姓系：計(jì)算機(jī)信息與技術(shù)系業(yè)：計(jì)算機(jī)系統(tǒng)結(jié)構(gòu)名：朱琦指導(dǎo)老師：吳百鋒教授完成日期：2005年5月27日量主塹坌亟盟運(yùn)童壹塑墨笙塑型!壅皇堂鹽AbstractBarcodetechnologyisatechnologydevelopedaccompanywiththecommunicationtechnologyandcom

2、putertechnologyAccordingtothecodingrulersofbinarysystem，theBarcodesystemreplacesthesignal1or0bytheblack／grayorwhitemodule，andcomposingaBlackwhiteimageThroughthephotoelectricscantools，thesystemCarlcollectstheinformationco

3、mpiledintheimageAndthisprocessiswhatwewant，theautorecognitionprocessAnd2DBarcoderecognitionisafocustechnologyinthefieldofcomputerrecognitionnowatimeBasedontheconceptsofbarcodetechnologyespecially2Dbarcodesystem，andthetec

4、hnologyofthemicroelectricandcomputerwedevisedasystemwhichcanstoresthevoicemessageonthepaperandpronouncesitthroughahandsetdeviceUsingthistechnologyanewkindofpaperaudiobookwillcomeoutwhichcombinethetraditionalpaperbookandt

5、henewelectricaudiobookThearticlefirstintroducesthewholearchitectureofthesystem，andthendepictssomebarcodesystem，especially2DbarcodesystemThearticlemakeadetaileddepictiononthemainsubsystemsuchasvoicecompresssubsystem，coder

6、ecognizesubsystemereinsuccessionInthevoicecompresssubsystem，thearticleintroducedsomevoicecompresscodetechnologyespeciallyG7231TheexaminationshowedthatthiscodetechnologycangiveUSclearvoicewithhighquailtywithahighcompressi

7、oncapabilityInthissection，wepresentabriefintroductiontothecodeconstructatthesametimeInthecoderecognitionsubsystem，fastrecognizealgorithmisthefocusofthesection，orthisarticleThearticleshowsthisalgorithmindetailedcombinedwi

8、thsomeexaminationTheexaminationshowedthatthealgorithmcansatisfiedtherequirementofthesystemAtlast，thearticleintroducedanewtypesoundplaytechnology：PWM，whichcangiveUSahighqualityvoiceoutputwithasurprisinglylowcostKeyword：2D