– LUFS Scale was Introduced Primarily to Outline Broadcast Standards to Keep the Perceived Volume of the Different Shows and Adverts the Same (=Loudness Normalisation)
– the New Loudness Standard Metering Units also Provides Info Over the “Short Term Loudness” (Beside Integrated Loudness) to Accurately Represent the Perceived Loudness
– this Reading is a Crucial Part of the Mix / Master Process as it Ensures that you Music is Heard in its Best Possible Form Across Radio Stations
– e.g. iTunes Expects a Track to be Around -16LUFS, Consequently if a Track is at -8LUFS Its Volume will be Reduced, or Viceversa if a Track is Around -23LUFS Its Volume is Increased in iTunes
– Since Revision 2/3 LUFS and LFKS are the Same (and Measured the Same)
– LUFS = Loudness Unit with Respect to Full Scale (in dB)
– LKFS = Loudness K-Weighted with Respect to Full Scale (in dB)
– Absolute Standard of Loudness Measurement Nowadays, Introduced by the ITU (International Telecommunication Union)
– Stands for Loudness Unit Full Scale and is Referenced to Full Scale Digital (even though they are Technically Power Measurements as RMS)
– Specifically for Broadcasting to avoid Adverts “Blasting” Out between Programs
– Think of them as an RMS Meter that becomes Slower to React to Level Changes (Higher or Lower) for the Longer you use it
– Basically the more Time you measure (Longer you Analyse a Program), the less Important any particular Instant becomes to the Average (Less Influence a Single Part of a whole Program has to the Overall Measurement Result)
– 1 LU is approx. the same as 1dB
– In more Detailed Comparison, a 1kHz / 0dbFS Sine Tone will Measure -3LKFS as well as -3RMS , where a 1kHz / -20dbFS Sine Tone will Measure -23LKFS
– For Example -23LKFS means that you applied K-Weighting to your Program Material, made a RMS Measurement of the K-Weighted Material and that the Resultant is at -23dBFS (Relative) Amplitude
– LKFS is Alleged to Psycho-Acoustically correspond to the Sensation of Program Loudness (where dBFS does Not correspond to any Specific Type of Measurement or Sensation)
– LUFS = Grey Button Cubase
– LUFS and RMS are Closely Together, but in the “LUFS” System the EQ is Balanced and More Focussed on the Midrange Like the Human Hearing Works in Terms of Judging Loudness (whereas the RMS System is Very Sensitive to the Bass and therefore Never as Accurate in Judging Loudness as the LUFS)
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