數(shù)字音頻水印技術(shù)研究.pdf

1、分類號：——UDC：工學(xué)碩士學(xué)位論文密級編號數(shù)字音頻水印技術(shù)研究碩士研究生：指導(dǎo)教師：學(xué)位級別：學(xué)科、專業(yè)：所在單位：論文提交日期：論文答辯日期：學(xué)位授予單位：V780618唐韶鋒李雪耀、張汝波教授工學(xué)碩士計算機軟件與理論計算機科學(xué)與技術(shù)學(xué)院2005年2月2005年2月哈爾濱工程大學(xué)哈爾濱1稃人學(xué)碩十學(xué)f節(jié)論文ABSTRACTAsakindofeffectiredigitalcopyrightprotection1echn0109ica

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3、arermarkWiththetwo—dimensionbinaryimageaswatermarkinformatjontheaudiodataasimbeddedtarget，onthebasisofanalyzingthedjgitaltechnologicalcharacteristicanddemandofaudiofrequencywatermarkindetail，inordertoenhancetheimpercepti

4、bleandrobustof“Ihedigitalwatermark，andwiththeimprovementoftheexistinga1gotithm，thispaperdiscussestwonewdigitalhlindwatermarkmethodsofaudioforcopyrightprotectionAtonehandthereisanimprovementoftheexistingalgorithm—thedigit

5、alblindwatermarkalgorithmofaudiobasedondiscreetwavelettransformInthepretreatmentbeforethewatermarkisimbedded，besidesusingthenonrandomsortmethod，whichalsoarrangesinanorderatrandom，todispelthedependenceoftheelementintheone

6、—dimensionalarray，itintroducesmistakecontrolcode(namelv：Errorcorrectioncode)，wbichisquitematuredtechniqueinthefieldoftelecommunicationandsoon，taisetherobustofthedigita]watermarkThisarticleuses(7，4)Ha唧ingcodetoerror—corre

7、ctingcodethewatermarkmessageInordertoenhancetherobustofdigita]watermarkalgorithm，theerror—correctingcodeisusedforcorrectingthewrongmessageinthewatermarkifany，whiledistillingandinspectinginwatermarkinformationOntheotherha