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R 128 recommends normalising audio at the target level of −23 LUFS. This measurement is the integrated loudness calculated over the whole duration of the programme and in the entirety of its contents (i.e. without emphasising specific foreground elements, such as voice). [ 1 ]
Loudness units relative to full scale (LUFS) is a synonym for LKFS that was introduced in EBU R 128. [ 10 ] The EBU has suggested that the ITU should change the unit to LUFS, as LKFS does not comply with scientific naming conventions and is not in line with the standard set out in ISO 80000-8.
Audio normalization is the application of a constant amount of gain to an audio recording to bring the amplitude to a target level (the norm). Because the same amount of gain is applied across the entire recording, the signal-to-noise ratio and relative dynamics are unchanged.
This convention is the basis for the ITU's LUFS loudness unit, [23] and is also used in Sound Forge [10] and Euphonix meters, [24] and Analog Devices digital microphone specs [25] (though referred to as "dBFS").
The practice of focusing on loudness in audio mastering can be traced back to the introduction of the compact disc, [3] but also existed to some extent when the vinyl phonograph record was the primary released recording medium and when 7-inch singles were played on jukebox machines in clubs and bars.
Mastering, a form of audio post production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master), the source from which all copies will be produced (via methods such as pressing, duplication or replication).
A densely layered multimedia project that combines music, comic book art, holograms and mini-movies, Metro Boomin’s “Heroes & Villains” is wildly ambitious. That scope and vision comes ...
ReplayGain works by first performing a psychoacoustic analysis of an entire audio track or album to measure peak level and perceived loudness. Equal-loudness contours are used to compensate for frequency effects and statistical analysis is used to accommodate for effects related to time.