voice activation login：语音激活登录

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1、VOICEACTIVATIONLOGINProjectProposalPoonamSinghandMuniraA.HussainTA:PurveshThakkarProject#139/13/00I.IntroductionThepurposeoftheprojectistoconductspeechrecognitionandvoiceauthenticationactivationonWindowsplatformPersonalComputers.Ourenthusiasmgrewwith

2、thefactthatspeechrecognitionisacquiringamajorplaceinthevastgrowingcommunicationandwirelessindustry.Theindustrysawthehypeofgrowinge-commerceandnowm-commerceandv-commercearetakingthelead.CompanieslikeNuance,IBMviaVoiceandDragonNaturallySpeakingarealrea

3、dyinthebusiness.Thedesignmechanismincludestakinginandprocessingavoicecommandandusingtheperson'svoiceprinttologinintoasystem.Wearetakingadvantageofthefactthatinnaturenotwoindividualshavethesamevoicefrequency.Hencethismakestheloginsystemveryuniqueandpe

4、rsonaltoauser.Firstly,thisprocedureincreasesthesecurityofsystemsandpreventshackingofindividualpasswords.Thusdeliveringhighrecognitionaccuracy.Also,themechanismeliminatestheneedforpasswordsorpersonalidentificationnumbers(PINs),givinganindividualfreedo

5、mfromrememberingvariousauthenticatingID’s.Objectives:VarioussoftwareversionsarealreadyavailablehowevernoneexistsintheDSPhardwareform.Ourgoalistocaptureaperson’svoicesignal,extractitsvoiceprintusing8-bitPCM(PulseCodeModulation)withthehelpofMotorola563

6、02microprocessor,matchitwithapreviouslystoredvoiceprintofthatperson,andfinallyusingthatastheactivationtologintoasystem.Benefitstothecustomerinclude:·Eliminationoftheneedforpasswords·Usefulifoneforgetshis/herpassword·Highlysecuredauthenticationsinceno

7、twopeoplehavethesamevoiceprint·CustomizedsystemconfigurationsII.Design1.BlockDiagram:Part1:Sampler(analog/digitalDSPprocessor)InputdeviceAnalogsignal(Anindividual’svoicesignal)Quantizer(analog/digitalDSPprocessor)DigitizedsignalstoredintheComputerdat

8、abaseandlaterusedforcomparingvoicestreamsLowpassFilterPart2:Userinput(voice)Sampler(analog/digitalDSPprocessor)Createauserinterfacescriptthatrequestsforpersonalinput(inthiscase,voicesignal)Thescriptalgorithmcomparesthenewvoicesamplewiththeinitialsign