Dynamic range compression tool...

[James Gray]

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Derek Broughton wrote:
> James Gray wrote:
>> Paulo Matafome Oleiro wrote:
>>> Seg, 2006-07-24 às 18:19 +0200, Andrea Giuliano escreveu:
>>>> mp3 audio file (or wav file, maybe) so that the difference in
>>>> loudness between very loud passages and very low passages
>>> Sincerely
>>>
>>> The only program that I know is MP3 ReplayGain (mp3gain) to get all
>>> the track louder.
>>> This should be available at the repositoires
>>
>> The only thing this program does is read the entire MP3, find the peak
>> value, and bumps the total gain up or down so the peak matches whatever
>> you want it to be.  
> 
> Not according to the designer:
> "Replaygain is different from normalization. In normalization, you merely
> ensure that the peak amplitude reaches a certain level. However, songs
> with 'spiky' waveforms might not be amplified enough. The replaygain
> technique measures the effective power (i.e. RMS after an Equal Loudness
> Filter) of the waveform, and amplifies the waveform accordingly. The result
> is that replaygained waveforms are usually more uniformly amplified that
> normalized waveforms."
> http://wiki.hydrogenaudio.org/index.php?title=Replaygain

Must be thinking of another package then - my bad.

Cheers,

James
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