My rant was about situations where mp3gain reports the file as clipping before gain changes have been made, IOW, clipping that results from the lossy encoding process. Quote from: greynol on 01:07:36 For tracks where RG values are positive, clipping can be audible and has been reported as audible by various people.
Macmp3gain vs ivolume windows#
It's good to know that's less of a - there are plenty of programs for Windows that can raise the volume of mp3 files (and now AAC files too) - mp3gain, mptrim, mp3directcut come to mind. in these cases, I will raise the volume, but have worried about clipping.
However, even this way there are some albums, mastered at a low volume with lots of dynamic range, where the volume is significantly lower than replaygain would ideally place it. I agree with you that it's better to use replaygain as it's intended, which means lowering the volume of most tracks I use the same approach that you do. it's good to know that this isn't very relevant from an audio-quality perspective. I just wasn't sure if Audacity had the capability to edit without re-encoding - I think it doesn't. Such programs can even do graduated fades (limited by frames and 1.5 dB increments of course). mp3directcut, and apprently fission as well. Last Edit: 18:19:20 by - I meant to distinguish between standard wav-editing programs, and programs that allow you to edit the lossy audio stream but without requiring re-encoding.What you want is a program that can edit an mp3 file without decoding and then re-encoding again afterwards, which results in quality loss. I think that Audacity can make changes to a waveform, but then re-encodes afterwards. You can set up a Windows virtual environment on a mac, in order to run windows programs such as mp3gain or foobar2000.Įdit: also, I'm not sure if audacity is the program you want to be using here.
The usefulness of mp3gain is that it can first calculate values for the file, and you can find the maximum amount you can raise the volume without clipping. If you go over 1.0, the any part of the top of the waveform beyond 1.0 will be chopped off and truncated at the maximum of 1.0 If the maximum volume level of a given file is 0.84, for example, you could raise it 1.5 dB to around 0.99. You'll want to avoid clipping, or at least avoid much clipping. You need to use mp3gain or a program like it that can edit the volume of mp3 files, in increments of 1.5 dB, by changing the volume value on each mp3 frame (1152 samples, 0.026 seconds) in the file.
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