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页数:18页
时间:2019-10-18
《ITU-T P.835-2003(E) Subjective test methodology for evaluatin》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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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