Normalizing (mastering)

Share your favorite Ableton Live tips, tricks, and techniques.
MusicFlow
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Post by MusicFlow » Thu Jul 03, 2008 6:38 pm

Ok thanks very much for the explaination, but I still don't get it (about the db/dbfs thing, but I knew what clipping is)

When I play commercial songs with foobar I often see the 'Visualisation: Peak Meter' tool going to the maximum/0dbfs. When I render a song with live, that I normalize, I can assure you that it never reaches 0dbfs, and by far. I assume that it just hits the 0db that is displayed by the meters in live.

So what did I get wrong?

EDIT: okay, so live shows dbfs too, that I didn't know. Thanks
But I wonder why my songs don't sound too bad, if I push the volume to +6db?! Wouldn't they sound HORRIBLE and all distorted?

Tarekith
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Post by Tarekith » Thu Jul 03, 2008 6:46 pm

Not neccesarily, the peaks and transients get clipped first, and not everyone can gear that. Definitely not something you want to do though.

MusicFlow
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Post by MusicFlow » Thu Jul 03, 2008 7:06 pm

Ok, thanks everybody, I understood everything!
(Hum... at least about what I asked in this topic :lol: )

My tracks are indeed clipping (but I can't hear it :cry: ), and commercial songs too ... a lot (yeah, I know, I'm annoying, always talking about 'commercial', but that's what we're all aiming for, aren't we?)

So I think this topic is more or less closed, I'll read the others to learn how to do a 'real' mastering work. :wink:

laird
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Post by laird » Thu Jul 03, 2008 7:30 pm

try this for a 6dB boost... and compare to your method:


1. Add CompressorII to the master track
set threashold to -18dBfs (dB for short, dB is a generic term, like "loudness")
Set the ratio to 3:1
set the attack to 0msec + lookahead
set the makeup gain to +6dB


This will boost the loudness of your track +6dB, but instead of clipping everything that was originally between 0dB and -6dB,
it'll squeeze everything that was originally inbetween -18dB to 0dB.


Squeezing is much softer on the ears than Clipping.
both methods will peak at 0dB.
And the average volume should still be +6dB louder in both cases.


Post-note: you say your +6dB clipped sound files sound OK. That's entirely possible! perhaps you have a single instrument that has very transient peak volumes. Something percussive, like a snare, lets say, is going above 0dB for 10 msec, lets say. Well, adding noise to a snare is not going to be very audible.... its already noisy! And 10msec of noise is a pretty short amount of time. Bottom-line: clipping is not a problem in this scenerio.

Try this: record yourself singing. Normalize, then boost +6dB, render again. I can almopst gaurantee you will hear the "bad noise" in this file.

MusicFlow
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Post by MusicFlow » Thu Jul 03, 2008 7:46 pm

laird wrote:try this for a 6dB boost... and compare to your method:


1. Add CompressorII to the master track
set threashold to -18dBfs (dB for short, dB is a generic term, like "loudness")
Set the ratio to 3:1
set the attack to 0msec + lookahead
set the makeup gain to +6dB


This will boost the loudness of your track +6dB, but instead of clipping everything that was originally between 0dB and -6dB,
it'll squeeze everything that was originally inbetween -18dB to 0dB.


Squeezing is much softer on the ears than Clipping.
both methods will peak at 0dB.
And the average volume should still be +6dB louder in both cases.


Post-note: you say your +6dB clipped sound files sound OK. That's entirely possible! perhaps you have a single instrument that has very transient peak volumes. Something percussive, like a snare, lets say, is going above 0dB for 10 msec, lets say. Well, adding noise to a snare is not going to be very audible.... its already noisy! And 10msec of noise is a pretty short amount of time. Bottom-line: clipping is not a problem in this scenerio.

Try this: record yourself singing. Normalize, then boost +6dB, render again. I can almopst gaurantee you will hear the "bad noise" in this file.
Wow thanks a lot, that's great, I really need to learn how to use (well) compressors/limiters!

About the PS, yeah, that's why I had some issues with saxophone and voice on some tracks, I understand now, thanks.

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