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Topic: --scale vs. mp3gain (Read 12741 times) previous topic - next topic
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--scale vs. mp3gain

Reply #25 –
Quote from: NeoRenegade,Dec 28 2004, 10:08 AM

[a href="index.php?act=findpost&pid=261751"][{POST_SNAPBACK}][/a]
No, it is not normalization — normalization is when you make the gain or the max peak value of a collection of songs the same; meaning you're applying a different gain to each file.
[/quote]

That would be peak normalization.  There is also RMS normalization.



On a different note, I may be wrong, but I always thought that --scale worked directly on the input prior to encoding.
"You can fight without ever winning, but never win without a fight."  Neil Peart  'Resist'

--scale vs. mp3gain

Reply #26 –
Quote
Quote

No, it is not normalization — normalization is when you make the gain or the max peak value of a collection of songs the same; meaning you're applying a different gain to each file.
[a href="index.php?act=findpost&pid=261864"][{POST_SNAPBACK}][/a]

That would be peak normalization.  There is also RMS normalization.

On a different note, I may be wrong, but I always thought that --scale worked directly on the input prior to encoding.
[a href="index.php?act=findpost&pid=262136"][{POST_SNAPBACK}][/a]

AFAIK you're right!
Sorry for my poor English, I'm trying to get better... ;)
"The greatest trick the Devil ever pulled, was convincing the world he didn't exist."

--scale vs. mp3gain

Reply #27 –
Quote
Quote
Quote

No, it is not normalization -- normalization is when you make the gain or the max peak value of a collection of songs the same; meaning you're applying a different gain to each file.
[a href="index.php?act=findpost&pid=261864"][{POST_SNAPBACK}][/a]

That would be peak normalization.  There is also RMS normalization.

On a different note, I may be wrong, but I always thought that --scale worked directly on the input prior to encoding.
[a href="index.php?act=findpost&pid=262136"][{POST_SNAPBACK}][/a]

AFAIK you're right!
[a href="index.php?act=findpost&pid=262253"][{POST_SNAPBACK}][/a]

So, to sum up, applying wavegain album does the same exact thing as passing
wavegain's scale value to Lame? Or only if you dither it to make it 24 bit?

--scale vs. mp3gain

Reply #28 –
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The bad news: MP3Gain can only adjust the volume of your mp3 files in steps of 1.5 dB.
The good news: 1.5 dB is a small enough step for most practical purposes. Most humans can just barely hear a volume change of 1 dB.

I can't see why anyone would use --scale instead of mp3Gain. There are way too many advantages that mp3Gain offers and clearly makes up for that little 1.5 db tradeoff, which I don't consider a problem at all. The only purpose of --scale that I can see is for people that can't use mp3Gain or people that want to apply the same volume to all their files - no matter if it still clipps or not, and are not interested in AlbumGain or getting the max volume without clipping, and will never change the volume again...
[{POST_SNAPBACK}][/a]


Here's one reason to use --scale instead of (or along with) mp3gain:
I can hear increments of 0.5 dB or so, and yes, I can ABX them. Often, I am not satisfied with 1.5 dB increments, and where I am I will encode using --scale 0.917 (so, -0.75 dB) or scale 0.944 (-0.5 dB) or scale 0.891 (-1.0 dB). After this I use mp3gain like normal.
This is a fair bit of work, so I don't do it all that often, but it's useful if you're perfectionist and anal-retentive, which I sometimes am with mp3's.

[a href="http://www.hydrogenaudio.org/forums/index.php?showtopic=33437&st=0&p=292506&#entry292506]Here's[/url] another post (thread worth reading, too) where I comment on more careful gain adjustment of mp3 files - when I compare them to my ideally gained mp3's, I'll often want increments of 0.5 dB or 0.75 dB.
God kills a kitten every time you encode with CBR 320

--scale vs. mp3gain

Reply #29 –
I'm sorry for this post, because I think that in this field there's nothing I can study more...
I've read the whole thread once again and I've seen Jojo's post which I missed before:
Quote
The only purpose of --scale that I can see is for people who want to get the max volume without clipping, and will never change the volume again...
That's exactly what I want to achieve!
Am I missing something, or is it possible to do it without that much work? 
I really don't think it is...
Sorry for my poor English, I'm trying to get better... ;)
"The greatest trick the Devil ever pulled, was convincing the world he didn't exist."