So is this the ReplayGain stuff?

http://en.wikipedia.org/wiki/ReplayGain

If so then using SoundCheck in iTunes should give you something similar. There is no data field in the MP3 standard which specifies how loud the file is but there are some 'conventions' which do so. Apple has their convention through SoundCheck and anything that uses the baked in playback engine (Mac, iOS) should work just fine.

If you're really curious you could also use mac ports to install aacgain which is based off mp3gain which you can then operate through the terminal:

http://aacgain.altosdesign.com

CB

On 4/26/13 5:08 PM, Marc Rocheleau wrote:
That's why I liked mp3 gain on the PC, it just boosted the file's
volume without requiring a re-encode. I am lucky though, I can get wav
files of these particular tracks, amplify them and then encode to
mp3... so it works as a stopgap solution for now. I really wish I had
something like what I had with mp3gain on Windows though.

-Marc


On 4/26/13, Chris Blouch <cblo...@aol.com> wrote:
True, but each time you re-encode an mp3 the sound quality gets a little
worse. The iTunes method is non-destructive but that also means it only
works inside the player. Have to pick the lesser of two evils.

CB

On 4/26/13 12:22 PM, Alex Hall wrote:
If you are looking for file modification instead of presets, try Audacity.
Just open your file, install the MP3 encoder as described in the
documentation, and then open your file. Go to effects, then amplification,
and make your changes, then export the file to MP3.
On Apr 26, 2013, at 11:34 AM, Chris Blouch <cblo...@aol.com> wrote:

A hacky way is to play with the gain on the iTunes equalizer. With EQ on
you can up arrow on the pram vertical slider to add 12dB of gain. It
won't announce the value as you up arrow but 5-6 up arrows should max it
out and if you VO-right and left it should announce 12dB preamp. In
addition you can move up each of the EQ sliders for another 12dB. You can
save this as a preset and if you get info on a track, under the Options
tab, you can pick that preset to bump up the volume for just that track.
This is in addition to the Volume Adjustment on the same Options tab
which will let you double to volume on a track by track basis.

CB

On 4/26/13 11:28 AM, Marc Rocheleau wrote:
Sorry, I thought my original e-mail would be included in the last one.
I am looking for a program that can boost the sound volume in mp3
files. On the PC, I used mp3gain because it worked better than
soundcheck does in iTunes and amplifies the file itself instead of
just when you listen on iTunes. You could also decide how much to
increase the volume yourself on an individual track, so quieter
ballads weren't louder than they should be.

There's a mac mp3gain but I found it doesn't do anything to the files
one way or another. I'm going to be putting some albums on an iPod
shuffle for someone as a gift and want them to be at a similar volume
level.

I hope this makes more sense now. Thanks in advance for any help!

-Marc


On 4/26/13, Alex Hall <mehg...@gmail.com> wrote:
I'm not sure what the original question was, but if it's increased
volume
you want, try VLC (videolan.org). That app seems to go way above the
volume
iTunes or Quicklook can manage, and I usually leave the volume down
some to
keep things manageable. Sorry if your question was something
different.
On Apr 25, 2013, at 10:59 PM, Marc Rocheleau <marcrochel...@gmail.com>
wrote:

Don't mean to pester the list but I was REALLY hoping for a response
to this question. For someone who used a program like this for
Windows
so much, I really need the same for the Mac. Does anyone have any
recommendations? I'm a bit surprised that no one has responded so far
given how many people here seem to be manipulating and editing audio.

Please help! Thanks in advance.

-Marc


On 4/23/13, Marc Rocheleau <marcrochel...@gmail.com> wrote:
Hi all,

I found the easy music converter app thanks to a helpful member of
the
list here and was hoping luck could strike twice.

Now that I can convert tracks from flac and other file formats
easily,
I am in need of a program that can amplify mp3 volume levels. I used
to use mp3gain on the PC, which worked perfectly for this, but found
that mac mp3gain doesn't actually amplify my mp3 files at all. Does
anyone know of a VO friendly mp3 amplifier? I don't want an audio
editor with an amplify option, I'd like something specifically for
amplifying mp3 files.

Thanks in advance for any help you can provide!

-Marc

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