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ITU P.800:1996

ITU P.800:1996 Methods For Subjective Determination Of Transmission Quality Describes methods and procedures for conducting subjective evaluations of transmission quality. The main revision encompassed by this version of this Recommendation is the addition of an annex describ

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Table of Contents

1Scope
2References
3Definitions
4Abbreviations
5Conventions
6Recommendedmethods
6.1Conversation-opiniontests
6.2Listening-opiniontests
6.3Interviewandsurveytests
6.4Othertests
AnnexAConversation-opiniontests
A.1Testfacilities
A.1.1Physicalconditions
A.1.2Establishingtheconnection
A.1.3Monitoring
A.2Experimentdesign
A.3Conversationtask
A.4Testprocedure
A.4.1Eligibilityofsubjects
A.4.2Opinionscale
A.4.3Instructionstosubjects
A.4.4Datacollection
A.4.5Treatmentofresults
AnnexBListeningtests-AbsoluteCategoryRating(ACR)
B.1Sourcerecordings
B.1.1Recordingenvironment
B.1.2Sendingsystem
B.1.3Recordingsystem
B.1.4Speechmaterial
B.1.5Recordingprocedure
B.1.6Talkers
B.1.7Speechlevels
B.1.8Calibrationsignal
B.2Selectionofcircuitconditions
B.2.1Speechinputandlisteninglevels
B.2.2Talkers
B.2.3Referenceconditions
B.2.4Otherconditions
B.3Designofexperiment
B.4Listeningtestprocedure
B.4.1Listeningenvironment
B.4.2Listeningsystem
B.4.3Listeninglevel
B.4.4Listeners
B.4.5OpinionscalesrecommendedbytheITU-T
B.4.6Instructionstosubjects
B.4.7Statisticalanalysisandreportingof
results
AnnexCQuantal-ResponseDetectabilityTests
AnnexDDegradationCategoryRating(DCR)Method
D.1Introduction
D.2DegradationCategoryRating(DCR)Method
D.2.1Speechsamples
D.2.2Referenceconditions
D.2.3Stimuluspresentation
D.2.4Testinstructions
D.3Statisticalanalysis
AnnexEComparisonCategoryRating(CCR)method
E.1Introduction
E.2Qualityreference
E.3MNRUreferences
E.4Presentationtolisteners
E.5Dataanalysis
AnnexFThethresholdmethodforcomparisonof
transmissionsystemswithareferencesystem
F.1Introduction
F.2Testingprocedure
F.3Presentationofsignals
F.4Speechsources
F.5Listeningenvironment
F.6Listeners
F.7Reliability
Bibliography

Abstract

Describes methods and procedures for conducting subjective evaluations of transmission quality. The main revision encompassed by this version of this Recommendation is the addition of an annex describing the Comparison Category Rating (CCR) procedure.

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