Thanks for the tip, the source of the text is here: https://tonstudio-wissen.de/abhoerlautstaerke-richtige-lautstaerke-tonstudio/

 

It doesn't become true just because you repeat it. You are wrong.



And neither LUFS nor LKFS have anything to do with the K-System. K-weighting has nothing to do with the K-system. So why are you muddying the waters?

 

Last edited: Mar 13, 2025 at 11:49 AM

Does the K-System use C-weighting then? It uses some kind of weighting if it isn't K-weighting.

* LUFS (Loudness Units relative to Full Scale)
* LKFS (Loudness, K-weighted, relative to Full Scale)

There's EBU (European) and ITU (American.)

The waters most certainly have been muddied. There have been some terms thrown around throughout this thread relating to “K,” including “K-Metering,” (which is where I started while trying to unravel the mystery of OP's meaning of “K-Metering,”) and “K-Filters,” (which is a term you used in an earlier post.) There was also my use of the term "EQ curve" as an attempt to explain "weighting," which I previously acknowledged.

I think you should clear things up for us rather than swooping in and saying, "you're wrong." Enlighten us.

 

Last edited: Mar 13, 2025 at 4:13 PM

the k-system itself first of all deals with peak and RMS power - and not with loudness at all.

a k-meter itself does not use any weighting, but you have to use c-weighting to calibrate your studio speakers in order to make more sense of the k-meters later.

people just mix up something they heard somewhere on social media and then explain you what they assume. and therefore create new content on social media which is again questionable.
the other half of the problem is that the industry has a certain interests to make things extra complicated and mystify them.

the "k-filter" is actually one of the two frequency filters in the weighting for measuring LUFS*). and it has a "k" in it. that´s all about it.


*) shelving @10^3Hz +4db and a highpass, butterworth topology @10^2Hz -3db

 

The C-weighting is used to calibrate loudspeaker reference levels.
Again, K(atz)-metering is a normal dBFS peak/RMS measurement minus the reference offset.

Loudness is k-weighted by definition (Lₖ)! That is why the EBU calls it LUFS and not LKFS.

1. The K in LKFS is superfluous
2. The K in LKFS breaks the naming convention

I did:

My suggestion would be, if you want to know more about LUFS, find a suitable thread or create a new one.
This thread is about the K-system. Just saying

 

don´t worry, you better forget everything he said. ;)

 

Good point, and thanks for responding