Normalizing Some Files

[Chumbo]

I have a bunch of audio files and some have really low volume levels. I have too many to go through manually right now so I'm looking for a command-line utility that would quickly analyze the file or at least a portion of the file and report the peak level. I can then determine if the file needs to be normalized or have gain applied to it and how much.

I found the AC3Filter tools but valdec doesn't report the level without playback and I can't capture the output in a batch file.

Do any of you know of a utility that does this that I can use? Thanks for any help and pointing me in the right direction.

[smok3]

what OS?

check "R128GAIN: An EBU R128 compliant loudness scanner" :
http://www.hydrogenaudio.org/forums/index.php?showtopic=85978

or there might be some other tools with older replaygain standard (wavegain does work on OSX for example).

[Overdrive80]

With eac3to http://forum.doom9.org/showthread.php?t=125966

filename.ac3 -wav -normalize

[Chumbo]

what OS?

check "R128GAIN: An EBU R128 compliant loudness scanner" :
http://www.hydrogenaudio.org/forums/index.php?showtopic=85978

or there might be some other tools with older replaygain standard (wavegain does work on OSX for example).
Windows 7 64bit. Thanks for the info on r128gain. Will check it out.

With eac3to http://forum.doom9.org/showthread.php?t=125966

filename.ac3 -wav -normalize
Yes, this is what I would use.

I don't need the tools to normalize or add gain. Please read my post carefully as I need the tool to tell me the peak/loudest level. I need this to determine IF a file needs to be normalized or to add gain. The last thing I want to do is just "blindly" normalize all files when many don't need it. Thanks a lot.