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ITU-T P.835-2003(E) Subjective test methodology for evaluatin

ITU-T P.835-2003(E) Subjective test methodology for evaluatin

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时间：2019-10-18

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1、INTERNATIONALTELECOMMUNICATIONUNIONITU-TP.835TELECOMMUNICATION(11/2003)STANDARDIZATIONSECTOROFITUSERIESP:TELEPHONETRANSMISSIONQUALITY,TELEPHONEINSTALLATIONS,LOCALLINENETWORKSMethodsforobjectiveandsubjectiveassessmentofqualitySubjectivetestmethodologyforevaluatingspeechcommunica

2、tionsystemsthatincludenoisesuppressionalgorithmITU-TRecommendationP.835ITU-TP-SERIESRECOMMENDATIONSTELEPHONETRANSMISSIONQUALITY,TELEPHONEINSTALLATIONS,LOCALLINENETWORKSVocabularyandeffectsoftransmissionparametersoncustomeropinionoftransmissionSeriesP.10qualitySubscribers'linesa

3、ndsetsSeriesP.30P.300TransmissionstandardsSeriesP.40ObjectivemeasuringapparatusSeriesP.50P.500Objectiveelectro-acousticalmeasurementsSeriesP.60MeasurementsrelatedtospeechloudnessSeriesP.70MethodsforobjectiveandsubjectiveassessmentofqualitySeriesP.80P.800Audiovisualqualityinmult

4、imediaservicesSeriesP.900Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.ITU-TRecommendationP.835SubjectivetestmethodologyforevaluatingspeechcommunicationsystemsthatincludenoisesuppressionalgorithmSummaryThisRecommendationdescribesamethodologyforevaluatingthesubjec

5、tivequalityofspeechinnoiseandisparticularlyappropriatefortheevaluationofnoisesuppressionalgorithms.ThemethodologyusesseparateratingscalestoindependentlyestimatethesubjectivequalityoftheSpeechSignalalone,theBackgroundNoisealone,andOverallQuality.SourceITU-TRecommendationP.835was

6、approvedon13November2003byITU-TStudyGroup12(2001-2004)undertheITU-TRecommendationA.8procedure.KeywordsCodedspeechinbackgroundnoise,noisepreprocessor,noisesuppressionalgorithm,speechqualityevaluation,subjectivetesting.ITU-TRec.P.835(11/2003)iFOREWORDTheInternationalTelecommunica

7、tionUnion(ITU)istheUnitedNationsspecializedagencyinthefieldoftelecommunications.TheITUTelecommunicationStandardizationSector(ITU-T)isapermanentorganofITU.ITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommendationsonthemwithaviewtostandardizingtel

8、ecommunicationsonaworldwidebasis.TheWorldTelecommunica

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