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ITU P.862:2001

ITU P.862:2001 Perceptual Evaluation Of Speech Quality (pesq): An Objective Method For End-to-end Speech Quality Assessment Of Narrow-band Telephone Networks And Speech Codecs Describes an objective method for predicting the subjective quality of 3.1 kHz (narrow-band) handset telephony and narrow-band speech codecs. Provides a high-level description of the method, advice on

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Table of Contents

1Introduction
2Normativereferences
3Abbreviations
4Scope
5Conventions
6OverviewofPESQ
7Comparisonbetweenobjectiveandsubjectivescores
7.1Correlationcoefficient
7.2Residualerrors
8Preparationofprocessedspeechmaterial
8.1Sourcematerial
8.2Additionofbackgroundnoise
8.3Processingthroughsystemundertest
9Selectionofexperimentalparameters
10DescriptionofPESQalgorithm
10.1Levelandtimealignmentpre-processing(Figure3)
10.2Perceptualmodel(Figures4aand4b)
AnnexA-Referenceimplementationsandconformancetesting
forRecommendationsP.862,P.862.1andP.862.2
A.1Filesprovided
A.2Samplingrate
A.3Conformancetests

Abstract

Describes an objective method for predicting the subjective quality of 3.1 kHz (narrow-band) handset telephony and narrow-band speech codecs. Provides a high-level description of the method, advice on how to use it, and part of the results from a Study Group 12 benchmark carried out in the period 1999-2000. Includes an electronic attachment containing an ANSI-C reference implementation of PESQ and conformance testing data.

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