A SEMI-OPEN-LOOP CODING MODE SELECTION ALGORITHM BASED ON EFM AND SELECTED AMR-WB＋ FEATURES-中国期刊网

摘要 TosolvetheproblemsoftheAMR-WB+(ExtendedAdaptiveMulti-Rate-WideBand)semi-open-loopcodingmodeselectionalgorithm,featuresforACELP(AlgebraicCodeExcitedLinearPrediction)andTCX(TransformCodedeXcitation)classificationareinvestigated.11classifyingfeaturesintheAMR-WB+codecareselectedand2novelclassifyingfeatures,i.e.,EFM(EnergyFlatnessMeasurement)andstdEFM(standarddeviationofEFM),areproposed.Consequently,anovelsemi-open-loopmodeselectionalgorithmbasedonEFMandselectedAMR-WB+featuresisproposed.TheresultsofclassifyingtestandlisteningtestshowthattheperformanceofthenovelalgorithmismuchbetterthanthatoftheAMR-WB+semi-open-loopcodingmodeselectionalgorithm.

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A SEMI-OPEN-LOOP CODING MODE SELECTION ALGORITHM BASED ON EFM AND SELECTED AMR-WB＋ FEATURES

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A SEMI-OPEN-LOOP CODING MODE SELECTION ALGORITHM BASED ON EFM AND SELECTED AMR-WB＋ FEATURES

来源期刊

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