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LUFS levels change when project gets exported


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Hi all!

I have a problem with LUFS levels that change when I export my projects. I've got a finished mix, have analyzed the LUFS values with Youlean Loudness Meter, then exported the project as a wav-file. Next thing I've done is to import the wav-file into a new project in order to master it. This is where the fun starts. I run the Youlean Loudness Meter again and expect to get the same results as I got before I exported the mix, but no. Not by a bit.  The Loudness range increased by 3 LUFS and the integrated LUFS increased with about 2 LUFS (making it louder I mean).

So since I didn't know what was going on, I checked other projects as well and out of 7 different projects all had changed somewhat. Some contained only minor changes, but others more severe, like getting 6 LUFS quieter (!) or LU loudness range changes by 5 LUFS,   (although these were not in  the same project). I mean, it gets a bit unpredictable to work with when it behaves so irradical

So I wonder what this can be? I read a thread about normalization on this forum, but I haven't touched any normalization button (don't even know where to find it). I just record my music with virtual instruments, try to gain stage as best I can and get the mix in the ballpark before exporting it for mastering in a new project file. But it does sound like something's going on under the hood, and I don't know what...

If anyone has any advice or theories about what this can be that would be highly appreciated!

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where are you measuring the LUFS? on the final FX of the master before the H/W? (with the H/W level set to 0?)

if your master buss is set to 0, the H/W output is set to 0, and the meter is the last thing before the H/W, then your readings should be consistent.

then the next step is: how are you exporting? what export settings are you using?

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I measure the LUFS on the master channel just before export. As you can see I have a few other things on the master channel as well. An instance of Breverb, Tonal Balance Control and also a 6db gain input, but I'm hoping that (the gain input) shouldn't affect the Youlean Loudness Meter as the meter comes after it on the FX. I tried to export with 0 gain but that didn't solve the issue. I also have this problem on exports where I don't have any gain added.

I sometimes use volume automation on single tracks and the master bus output volume however, could that affect this do you think?

I hope you can see my export settings also on the screenshot. I haven't tried rendering in real-time, but I only use software and a few standard plugins so I don't know if that could be a problem. I hope that answered your question? I'm not sure if I understand what you mean by H/W output?... Sorry if I'm a bit green about this.

 

 

cakewalkexport.jpg

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Welcome to the forum.
The 'Toneport' would be your hardware (H/W) and it looks like the H/W output is the export source, not the Master bus.
Go into your project and mute the Master bus and press Play. Is it silent?

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Posted (edited)

Thanks!

Ah, Hardware, of course....! I should have guessed!

Yes, when I mute the Master bus and press play it goes silent.  And at the bottom of my Master bus it says "In/Out; Output1+output2" which is then obviously my soundcard Toneport UX2 (which is quite old) which you pointed out. Could this be a problem?/Something to do with it?

I've always just had this setup and haven't thought much about it really.

Edited by guildensterne
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