Wavosaur

[piu_tyain]

What is the difference between volume and normalize?
I have plenty of file with different volume, i want them to have all the same level which is preferable to achieve a better result ?
grateful for any advice.

Piu.

[toxonic]

you can do this with the batch processor in wavosaur using the normalize function:
- open wavosaur
- in the menue choose "Tools" > "Batch processor"

a new window should appear now, where you can choose the source folder (containing the files you want to process) and a destination folder (where the processed file should be saved to)!
note that wavosaur is only able to save to wav files, so if you choose mp3 files as source files, the processed files will be wav files. if you want them to be mp3's, you have to encode them again after normalizing....

- after choosing the source/destination folder you select "Normalize 0dB" under "Function"
- hit the "Run" button

now the volume of all files in the sourcefolder will be raised to the maximum peak level and saved to the destination folder to wav format!

p.s.: to the wavosaur developers - RMS algorithm for normalizing would be a good idea!

[piu_tyain]

Thank you very much toxonic !!, will try that
so i have to choose "normalize" , what is RMS normalize ? is it better ?

[toxonic]

my english is not so good enough to describe it.... RMS means "Root Means Square" , you can find a hole description here:
-http://en.wikipedia.org/wiki/Root_mean_square

two different soundfiles with same level needn't have the same "louness" depending on the compression degree of the soundfiles - the RMS method calculates a mean score of the hole soundfile as base for the normalization process. the peak method only normalizes the file depending on his highest peak impulse.
therefore the rms method is better to adapt the "loudness" (not the max. level in dB) of two or more soundfiles to each other!
hope you understood my description, my english is quite poor, sorry....

[Wavosaur Main Developer]

I note your idea Toxonic for Normalize RMS.
Good!
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[piu_tyain]

thanks guys, i'll dig into this RMS normalize, thanks for the hints. I tried the method batch procesor + normalize 0db , it works well for me!!

[Rex]

Piu you can also set up a limiter VST plugin in the VST rack, and then use batch processor to apply the effect (choose "VST chain" in the list).

[toxonic]

ok, yes - that's a good compromise, although it's not the same like RMS normalization, where the waveform of the signal doesn't change through processing. the limiter changes the waveform by cutting off peak impulses.
if you have no experience in using dynamic processores you can easily make your files to waste! so keep in mind, always to keep a copy of the original!

[jonty]

MP3Gain does what you want to do, normalize your MP3 files. From what I understand it is even more sophisticated than RMS normalization.

MP3Gain is specifically designed as a batch processor, is quite fast and runs in the background very well.

I use MP3Gain to normalize all my files before I submit them to Wavosaur and it works very well for me.

http://mp3gain.sourceforge.net/
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The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard Feynman-