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Old July 10th 06, 05:31 PM posted to uk.rec.audio,rec.audio.tech,rec.audio.pro,alt.music.mp3.hardware,alt.music.mp3
David Morgan \(MAMS\)
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Posts: 6
Default Advice needed - Looking for software to batch level adjust MP3 files


"NRen2k5" wrote in message ...
David Morgan (MAMS) wrote:
"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message ...
On Sun, 09 Jul 2006 13:42:20 -0700, Julian
wrote:

Like ANY other sound editor. Unfortunately, it will re-encode your
MP3's, which is a BAD THING.
That's why to use MP3 Gain. It does NOT re-encode your MP3's. It
only writes a volume play back level to the header which can be
removed at any time.
Unfortunately that volume reduction is probably achieved digitally by
just throwing away bits, which is a bad thing.


It doesn't throw away bits. What it does is it changes "global gain"
values. Doing so is totally lossless and reversible.

Anyway do you WANT
everything reduced to the level of the quietest? You then have to
apply more amplification, bringing noise levels up.


So?

And you don't have to reduce them to the level of the quietest. What you
can do is apply "track gain" so that all the songs are a certain volume,
for example 89dB, and then use "constant gain" to bring the volume of
every song up or down by the same amount.

I had a look, and I can't see how the device works without modifying
dynamic range - but even if it works by lowering... you have another
valid 'yuk' point.


MP3Gain doesn't touch dynamic range.


If everything works downward in comparison to the reference... but if
gain is increased (especially on material where peaks are likely already
near FS) limiting will have to come into play, altering dynamics.

--
David Morgan (MAMS)
http://www.m-a-m-s DOT com
Morgan Audio Media Service
Dallas, Texas (214) 662-9901
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