ITU-T - International Telecommunication Union/ITU Telcommunication Sector
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ITU-T P.48-1988
Scope
Summary This Recommendation intends to specify 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.
ITU-T P.48-1988 history
1988ITU-T P.48-1988 SPECIFICATION FOR AN INTERMEDIATE REFERENCE SYSTEM