Common
EBU R 128
EBU recommendation for loudness normalisation
EBU R 128
EBU R 128 is a recommendation for loudness normalisation and maximum level of audio signals. It primarily targets audio mixing of television and radio programmes and has been adopted by broadcasters to measure and control programme loudness. It was first issued by the European Broadcasting Union in August 2010 and most recently revised in November 2023. R 128 employs an international standard for measuring audio loudness, stated in the ITU-R BS.1770 recommendation and using the loudness measures LU (loudness units) and LUFS (loudness units referenced to full scale), specifically created for this purpose. The EBU Tech 3341 document further clarified loudness metering implementation and practices in 2016.
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