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Effective on iPod Shuffle?
Authored by: atverd on Apr 07, '05 04:47:52PM

I should've mentioned this in original post, but forgot - it MUST work with ANY mp3/aac compliant software or hardware player because the frame gain field adjusted by this tool is basic part of mp3 and aac standards.

iTunes has two methods to fight the problem - Sound Check and Volume slider in tracks properties, but both of them are using proprietary tags and will not work with other players. In addition the Volume tag interpretation is broken in all iPods and it makes this feature practically useless when you want to listen same tracks in iPod and iTunes.

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Effective on iPod Shuffle?
Authored by: jiclark on Apr 08, '05 11:50:03AM

We're getting a lot of conflicting info here on this. In a reply a few posts above this one, Chris says that this is just another way of implementing the same 'volume slider' adjustment that iTunes uses. Is this true? If so, does it not work for the iPod, like you say iTunes implementation doesn't??

All this contradictory information is making me leery of trying this, though I'd absolutely love to find something that equalizes gain for iPod playback...


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Effective on iPod Shuffle?
Authored by: atverd on Apr 08, '05 12:50:50PM

The result should be same, but ways they implemented are totally different. "Volume slider" is proprietary tag in a track header added by iTunes and it can be interpreted by iTunes and iPods. This would be perfect solution if you are not dealing with other players, but unfortunately iPod and iTunes interpret this value in very different way. iVolume tool uses this feature - try it and check details on it's author's site.
aacgain and mp3gain adjusting volume in totally different way - through frame gain field which is integral part of mp3 and aac formats. So this way is absolutely compatible with any proper implementation of mp3 or aac players.

Overall - if you need both hardware and software playback for your music aacgain is the best solution.
If you need to playback only on iTunes or only on iPod - iVolume is very good tool and a lot simpler to use.

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Effective on iPod Shuffle?
Authored by: Anonymous on Apr 09, '05 01:45:33AM

I think there is slight difference: ReplayGain stores 3 parameters in in file's tags. Volume slider setting is remembered as one parameter, I presume. I bet ReplayGain is somehow more sophisticated implementation.



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