Mp4Gain is the most fantastic software that has been developed in a long time


Allows you normalize the audio of a video (in formats mp4, flv, avi, mpeg, mpg, 3gp, wmv) or a music file (mp3, mp2, flac, ogg, m4a, aac, wav, ac3) to qu achieve high sound volume, of course, with quality and all with a sound or similar volume, in short, they sound at the same volume.


Mp4Gain is therefore a volume normalizer for videos and music files


The program also allows you to equalize the same video or audio file, so you can tweak the sound to taste, is to sound more modern, to remove ambient sound to give more strength to the bass, etc..

On the other hand, can you change the tempo without altering the pitch. That is, you can raise or lower the tempo to greatly accelerate the audio or to make it much more slowly, without modifying anything in the pitch or tone of the video or song.

By contrarip, what can you invserio HACR, it s change the pitch or tone, without altering the tempo whatsoever or playback speed. You can, for example, one cancvion accelerate much, but the tone of the instruments and the voices do not change.

The program copies the tags for audio formats like Ogg Vorbis, FLAC, AAC, M4A, MP3, etc..

Also makes trim, which is to remove silence at the beginning and end of the song (this is optional)


Another option is the ReplayGain


Not all audio recordings of sound at the same volume (although the music industry is Committed to It With disastrous results) and Often, to listen to our mp3 collection, or we get a shock or we must be aware of volume control to hear songs that sound lower than the rest. This is at least a nuisance and a real problem in Certain Situations, for example if you are driving or exercising Concentrates.

Many programs to feed music to your computer or portable player bring the option to "normalize" the audio tracks. This means changing the amplitude of the signal (the song, come on) to a concrete ceiling. If done wrong, for example by Increasing the excess signal, the effect is called clipping or trimming, Which Amounts to, to get an idea as to when to string sound volume increase beyond the capacity of the speakers and produces a nasty cough or scraping ear . In the chain can always return the volume to an Appropriate level, but if the distortion is the result of modifying the audio itself, no turning back.

A few years ago the problem even out volume focused in another way: Instead of changing the amplitude of the signal, we had to modify the output volume of each signal Appropriately. That is, what we do manually With The volume control, but Automatically and over a measurement made on all signs to play. This process does not Affect the audio signal, but adds information to the file so the player knows That Which must play the audio volume. In many different sources from playlist, all sound at the same volume and listening will be more pleasant, with the assurance That We Have not changed the dynamic range of songs and we are distorting the original sound.

Especially ReplayGain is good when it comes to lossy compressed music. Why? For lossy compressed music can not normalize without losing audible Further information, and more THEREFORE quality. A MP3, WMA or OGG formats lossy in British terminology, audio information discarded when saving space. This information discarded (lost and unrecoverable) is logically felt When the audio treat, but if it is Also to continue to use and in a compressed format, will go back through a process of elimination and loss of information (Recompression) whereby a third time deslavazamos sound (compression-standards-Recompression). For use ReplayGain, the original mp3 audio is not altered or modified at any time: just tell the player how loud You have to play it.

ReplayGain can Operate in "album" or in "track". When we scan Audio Files with ReplayGain, it Analyzes the maximum amplitude (peak) of Both the track itself as the mean amplitude of all the tracks, if you're processing a full album. Then we give two recommended values, one for track and one for the album. If you tell the player that plays the music as the album's overall values, apply a uniform and if we do instead of tracks, particularly values ??apply for each file. The recommended option is to analyze each album together and play music mode so That the result is proportional. If you have a folder with a hodgepodge of files here and there, it is best not to analyze mode album Because It makes no sense to average of disparate elements, so we will analyze in track mode instead.

More and more players Compatible with ReplayGain. My favorite is Foobar, not only by the ReplayGain but other features Such as conversion tools. You can customize the interface Also to make it a work of art, though I prefer the basic screen and I have never tried to change it. The process I follow is Usually: Add to download and scan Files with ReplayGain, then the values ??are saved and ready. My mp3 player does not support RG, and almost none that I know of, so it comes to pass music, what I do is compress to mp3 using the RG as a modifier of info from the same Foobar. In this process we will be changing the audio itself as to normalize, but the difference Is that ReplayGain analysis Proposes a convenient volume to ear perception, not a simple calculation of maximum as the normalization function. As a result, all the music I listen to my mp3 without having to touch a single time volume control, no matter That after a heavy metal track comes one of jazz and then a gentle soundtrack.