Use the audition feature to listen to the effect. It may seem pretty permanent, but you can always change the gain in opposite direction with no quality-loss (we're dealing with it binary here).Ī word of advice: It's easy to distort the audio if too much gain is applied. But then I decided to venture into the world of portable. Initially, it worked great when using my E4's out of the headphone jack. I initially wanted to use it to reduce the volume on all my files to make the iPod equalizer more useful. There is no quality lost in the change because the program adjusts the mp3 file directly, without decoding and re-encoding' and is an app in the audio & music category. I discovered something interesting when using iVolume. posted by zsazsa at 2:55 PM on FebruI use iVolume, and it works great. iVolume looks like something that can integrate with iTunes. The gain adjust performed by MP3 Trimmer is written to each and every frame of the song, which will allow it to work on all playback devices (hardware / software). wxMP3gain is described as 'A free automatic mp3 volume normalizer.MP3Gain analyzes and adjusts mp3 files so that they have the same volume. If they're MP3 files, MacMP3Gain seems like it'll do the job. Also seems slower than normal, but that might be a perception thing with the lock ups. The Gain Adjust operation actually adjust the output gain of each frame, whichh is nothing like the 'adjust gain for this song' parameters in many audio playback devices/applications (they may only work for that specific device/application). iVolume keeps locking up (pinwheeling) but continues to work and recovers. Adjustments are set in relative percentage values. By clicking this button you enable the buttons to control the amount of Gain Adjust. If this button is disabled ('grayed out') Gain Adjust is not possible*. To the left of the audio fade controls you'll find a checkbox to enable gain adjustments. MacMP3Gain is an AppleScript Studio application which wraps up the command line version of aacgain (derived from mp3gain) in a quaint GUI. The help file for MP3 Trimmer under Basic Operation states.
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