increasing loudness of recordings (without quality loss.)

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guest

Post by guest » January 31st, 2006, 10:20 pm

I have seen the many discusions about this in the forums so I thought this might be useful.

it is an open source software called mp3 gain. according to the desciption:

MP3Gain does not just do peak normalization, as many normalizers do. Instead, it does some statistical analysis to determine how loud the file actually sounds to the human ear.
Also, the changes MP3Gain makes are completely lossless. There is no quality lost in the change because the program adjusts the mp3 file directly, without decoding and re-encoding.

it is avalable at: http://mp3gain.sourceforge.net/

it is for those running a pc with windows.

Stephan
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Post by Stephan » February 1st, 2006, 3:58 am

Thank you guest for your input. Suggestions like yours is what we are always looking for.

Although mp3gain is mentioned very often on this forum already, its use can?t be stressed often enough.

I know it works wonders on the recordings. I think its incorporated into the upload process of our files. When files are put on archive.org they are run through a commandline mp3gain algorithm batch by default, or something.

Good to have you thinking with us. Don't you wanna stay and record a chapter? :D
Last edited by Stephan on February 1st, 2006, 2:14 pm, edited 1 time in total.
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tis
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Post by tis » February 1st, 2006, 1:56 pm

Thanks for bringing this up, guest. mp3gain is a great program, and you can get versions for Mac and linux as well. In fact, as Stephan said, it's part of the upload process that our tireless cataloging team do when a book is completed.
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kayray
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Post by kayray » February 1st, 2006, 8:44 pm

tis wrote:Thanks for bringing this up, guest. mp3gain is a great program, and you can get versions for Mac and linux as well. In fact, as Stephan said, it's part of the upload process that our tireless cataloging team do when a book is completed.
In case you are wondering, it's only been a part of our process for a few weeks -- which explains why some of our earlier works have a big variation in volume. But, we're refining our system all the time :)

Kara
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Kristen
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Post by Kristen » February 2nd, 2006, 11:00 pm

I d/l'd Mac MP3Gain and ran it on the Alice chapters to see, again, if I could improve them. It didn't seem to do a thing to them either when run on the files in a folder, or in a playlist within iTunes (different instances of the files)

I am sorry that these files are not more even.
Kristen
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laurap
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Post by laurap » February 12th, 2006, 2:02 pm

Is there a target db number we should set? The default is 89, but I have no idea what that means in relation to the human ear. :-)

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