With iVolume you can bring all your iTunes songs to the same loudness. Therefore no simple peak analysis is made.
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Instead, the perceived loudness heard by human ears is calculated with an appropriate algorithm. The results of iVolume are much better than those of the built-in “Sound Check” function in iTunes.
iVolume does not change any data of your audio files, so there is no loss in quality. iVolume simply adjusts the “Volume Adjustment” slider that you can find in the information dialog of iTunes for every song.
What’s new in v1.2:
iPod workaround: Now iVolume can optionally adjust the songs so that they sound equally loud on the iPod.
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