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Audio Volume

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OK. I'm working on an audio project Tenacious D CD
Now I'm working with media from many differnt souces and so the volume of tracks is all over place, some are very loud, others are quite some are a nice balance. I was wondering if there was any program that could up or lower the volume of these tracks. Even if I have to do each track one at a time.
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VirtualDubMod can do that, but keep in mind that in order to input the audio in the program, it has to be multiplexed with a video stream in an avi file.
Adobe premiere can change a track's volume as well, and it can handle the audio file individually.
There are other tools as well, but most of them are file-type specific. If your source files are mp3s, I can name a few progs that will do the job.
And now, for your feature presentation:
The Classic Re-re-re-release of Star Wars, The Empire Strikes Back.
In this version the word "WOOKIE" has been changed to "HAIR CHALLENGED ANIMAL" and the entire cast has been digitally replaced by Ewoks.
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I am very sorry about my delayed answer, I had totaly forgotten this thread.
Some info: The only way to change the audio volume, is by changing it's waveform. As the mp3 files do not contain a pure waveform, it is impossible to change an mp3's volume without first converting it to a wave file and afterwards recompressing it to mp3. Thus, when saving an mp3 with changed volume you have to be carefull with the output bitrate. Even the progs that do not give you a bitrate option do have an internal encoder with probably a fixed bitrate.
That beeing said, I'd suggest you downloaded the shareware version of acoustica 3.3 from tucows.com to do your job.
I hope this was of help.
And now, for your feature presentation:
The Classic Re-re-re-release of Star Wars, The Empire Strikes Back.
In this version the word "WOOKIE" has been changed to "HAIR CHALLENGED ANIMAL" and the entire cast has been digitally replaced by Ewoks.
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Hi- first proper post for some time!

I've got a long standing preservation project that uses a variety of SW sound effects, sourced from the Internet, soundtrack CDs and audio captures from the movies.

I have tried to standardize the volume of these effects by subjectively altering each file so that they sound about the same (to my ear, anyway!) but this is imprecise at best.

Is there some way of batch processing these audio files so that they all end up at the same volume level? My knowledge of video manipulation is reasonable, but audio files are somewhat more challenging...

Any ideas gratefully accepted!

G
I'm sorry, I hate it when it does that.....
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Originally posted by: Goose
Hi- first proper post for some time!

I've got a long standing preservation project that uses a variety of SW sound effects, sourced from the Internet, soundtrack CDs and audio captures from the movies.

I have tried to standardize the volume of these effects by subjectively altering each file so that they sound about the same (to my ear, anyway!) but this is imprecise at best.

Is there some way of batch processing these audio files so that they all end up at the same volume level? My knowledge of video manipulation is reasonable, but audio files are somewhat more challenging...

Any ideas gratefully accepted!

G


I'd love an answer to this question as well

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If you do a search for batch normalize on Google you will get several hits for shareware/trialware apps that can normalize a batch of MP3 files.

The process is not as simple as amplifying the waveform to make the peak level equal to 0dB. The percieved volume of a file is related to the RMS level, and some audio (particularly for radio) has the dynamic range compressed in order to produce a higher RMS and therefore "sound louder".

Some MP3 players support Replay Gain, a measure of percieved loudness, and will automatically adjust the playback volume for you.

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