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ITU P.48:1988

ITU P.48:1988 Specification For An Intermediate Reference System Specifies the intermediate reference system (IRS) to be used for defining loudness ratings. The description should be sufficient to enable equipment having the required characteristics to be reproduce

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Table of Contents

1Designobjectives
2UseoftheIRS
3Physicalcharacteristicsofhandsets
4SubdivisionofthecompleteIRSandimpedancesat
theinterfaces
4.1Sendingpart
4.2Receivingpart
4.3Junction
5Nominalsensitivitiesofsendingandreceivingparts
5.1Sendingpart
5.2Receivingpart
6Stability
7Shapesandtolerancesonsensitivitiesofsendingand
receivingparts
8Noiselimits
9Non-lineardistortion
10Completespecifications
References

Abstract

Specifies the intermediate reference system (IRS) to be used for defining loudness ratings. The description should be sufficient to enable equipment having the required characteristics to be reproduced in different laboratories and maintained to standardized performance.

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