ITU P.56:1993
ITU P.56:1993 Objective Measurement Of Active Speech Level
Table of Contents
1Introduction2Terminology
3General
3.1Electrical,acousticandotherlevels
3.2Universalrequirements
3.3Averaging
4MethodA-Immediateindicationofspeechvolumefor
real-timeapplications
5MethodB-Activespeechlevelforotherapplications
thanthosementionedinmethodA
5.1Principleofmeasurement
5.2Detailsofrealization
5.3Valuesoftheparameters
6ApproximateequivalentsofmethodB
7Specification
7.1Signalinput
7.2Filter
7.3Speechlevelmeasurements
8RoutinecalibrationofmethodBmeter
8.1Noinputsignal
8.2Continuoustone
8.3Whitenoise
AnnexAAmethodusingaspeechvoltmetercomplyingwith
methodBinnetworkconditions