why when i'm rendering to 192khz 24 bit instead of 44.1khz of 16 bit i get different LUFS?

does that mean i need to change the threshold of the limitor on the same audio render if i need to get same LUFS for both?

 

It's not immediately obvious to me but I would start by checking the ceiling and if true peak is on.

 

More info needed. How much difference? Are we talking overs/ISP (tiny) difference? What's your peak value?
Loudness should not be affected by simple SRC.

 

Last edited: Jun 13, 2024

Let me guess, 44,1 has a higher LUFS?

 

Not enough info. Could be a few things, so it would help if you tell us what limiter you use, what oversampling if you use it, which lufs meter, is true-peak on? I think I'm missing something... ah - which LUFS? S? M? I? And how much is the difference?

 

There is likely SRC (Sample Rate Conversion) involved. If SRC is involved, level(s) will differ slightly as there is a lot of calculations, filtering, etc. involved. Do not expect exact same levels once samplerate(s) get changed!

 

like 6 LUFS difference

It was showing me around -13LUFS for 44.1kz 16bit and -8 LUFS for 192Kz 24 bit

ozone by izotope...i haven't checked the settings but it was same settings for both i need to run more tests i did it just one time

 

6dB is a pretty big difference, especially if it's LUFS-I "integrated". I don't think SRC can be blamed for such a difference.

You must be doing something to the input, before the limiter, that influences the input volume to the limiter somehow.

 

Last edited: Jun 13, 2024

Maybe you just forgot re-ticking some checkbox after changing sample rate.
Maybe you're using plugins that don't work correctly at that sample rate (Airwindows comes to mind).
Maybe you're getting incredibly unlucky phase shifts (try linear phase).

 

try measuring at 96kHz
try measuring with different plugin
try measuring in different DAW

 

Mix at 384Mhz
You're missing all the analog-mojo-saturation I can easily hear in the 167.1416 - 169 Mhz range

 

6LUFS is A LOT! You are obviously doing something wrong in the gain-staging.
What's the peak value of the finished master of both files (with the different sample rates)? Both should have very similar peak value.

 

Last edited: Jun 13, 2024

Using any Acustica Audio plugins? They work poorly with higher samplerate.
Maybe some other older and shittier plugins?

 

Not "a lot". It's twice as much. It's doubled.

 

Yeah. That's A LOT. Like "holy-shit-WTF-happened"-A LOT.

 

Last edited: Jun 13, 2024

Could be that a plugin can't deal with 192kHz SR (hello Waves) and goes bonkers.

 

are you sure you aren't measuring the LUFS before the ozone?
the measure plugin should be the last thing in your master chain, after the limiter

 

Does your soundcard only go up to 96khz by any chance (wink wink Audient)? Because using a higher sample rate than your hardware can handle will only result in a volume increase.