Most humans can just barely hear a volume change of 1 dB. The good news: 1.5 dB is a small enough step for most practical purposes. The bad news: MP3Gain can only adjust the volume of your mp3 files in steps of 1.5 dB. Here is some excerpt from it, Glen is much better in explanation than me: If you don't have MP3Gain installed, I recommend it, just to be able to read its help.
If you change that value for some frame of mp3 file, this doesn't mean that you are changing music since the frame with the audio data remains unchanged. However, as I said, you could always return to the previous state without audio degradation, even in MM, but only if you know the original track volume.īy the way, the global gain flag is just one value for each mp3 frame (IIRC 2048 bytes) which determines audio volume for that frame. MM doesn't have have such option, and this is one of reasons why I prefer MP3Gain. If you turn off the option "Ignore (do not read or write tags)" in the MP3Gain program and when you choose "Apply Track Gain" (which is same as "Level Track Volume" in MM), after that you could undone this process with its option "Undo Gain changes" if you are not satisfied with the result. You only need to know the starting value for the volume level, before its modification. However, even in that case there is not re-encoding as you wrote, and actually you could revert back volume level for mp3 file without sacrificing its quality. On another side, if you choose "Level Track Volume", the global gain flag would be adjusted for all mp3 frames (this is what you say that cannot be undone) and such mp3 file could be reproduced equally even on players which don't support Replay Gain standard. Such value could read only players that support Replay Gain value entered to tags. I don't know exactly how MM works, but I suppose if you choose the option "Update tags when editing properties" from the Options dialog and if you choose "Analyze Volume" that MM stores the calculated value to some tag in mp3 file (this is what you say that could be undone). The bottom line is that I would like to use the best method of track and/or album analysis on my mp3 library and ensure any volume adjustments are recognized when playing my iPod Classic. Are there any conflicts or problems for iPod playback if I have both Track Volume and Album Volume tags populated? (FYI, I have Sound Check turned off on my iPod since I do not use iTunes to manage my music.) Is there a difference between how the MP3 Gain algorithm is used in MM3 versus the MP3 Gain stand-alone application? Put differently, would I get the same result written to the same tags whether I used MM3 or the MP3 Gain stand-alone app? In a related vein, how about an expert opinion between using MM3's track/album analysis versus MP3 Gain's stand-alone app?Ĥ. The MP3 Gain web site, on the other hand, states that the MP3 Gain stand-alone application does NOT decode and re-encode your mp3 files ( ). How does MM3 use MP3 Gain? The Help states MP3 Gain is used for leveling, which is supposed to alter the music in your mp3 files. Does MM3 use MP3 Gain or Replay Gain when performing track/album analysis? It appears to be Replay Gain but I have read conflicting information.Ģ. Your iPod will automatically recognize both track and album analysis tags generated by MM3 and adjust playback of mp3s based on those tag values.ġ. changes them) and there is no way to undo leveling.Ģ. Volume LEVELING, on the other hand, actually decodes and re-encodes your mp3 files (i.e.
In MM3, track and album ANALYSIS add info to the mp3 tags but do not change the music in the mp3 files. Depending on the speed of your pc, it might take some time to normalise each track.Īnd because we used the -v option with the mv command in the bash function - you should see a message when each file has finished and is copied from the temporary directory in /tmp/.Ĭan you post any screenshots of the problem? Because this definitely works.I have some questions and could use clarification regarding MP3 Gain and Replay Gain, specifically as they pertain to Media Monkey 3, the iPod (Classic in my case), and track/volume analysis.ġ. However - when you run the normalise command in the foreground, the terminal will not appear to do anything at first, but it will start normalising the files straight away. I’ve never seen the cd command cause a system to hang.
If you try to cd into a directory, it will either move into that directory, or will give you some kind of error message - if the directory does not exist, or if the permissions of the directory prevent cd from entering the directory. The cd command is a standard system command. Replace that path with an actual path to a directory that exists on your system which contains MP3’s. Music/Artist/Album was an abstract example.
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