The EBU Tech 3341 document further clarified loudness metering implementation and practices in 2016. 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 with this purpose. It was first issued by the European Broadcasting Union in August 2010 and most recently revised in August 2020. It is primarily followed during audio mixing of television and radio programmes and adopted by broadcasters to measure and control programme loudness. EBU R 128 Loudness normalisation and permitted maximum level of audio signalsĮBU R 128 is a recommendation for loudness normalisation and maximum level of audio signals.
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