What is replaygain

The difference between the measured perceived loudness and the desired target loudness is calculated; this is considered the ideal replay gain value. Typically, the replay gain and peak level values are then stored as metadata in the audio file. ReplayGain-capable audio players use the replay gain metadata to automatically attenuate or amplify the signal on a per-track or per-album basis such that tracks or albums play at a similar loudness level.

The peak level metadata can be used to prevent gain adjustments from inducing clipping in the playback device. The original ReplayGain proposal specified an 8- byte field in the header of any file.

Most implementations now use tags for ReplayGain information. MP3 files usually use ID3v2. Other formats such as AAC and WMA use their native tag formats with a specially formatted tag entry listing the track's replay gain and peak loudness.

ReplayGain utilities usually add metadata to the audio files without altering the original audio data. Alternatively, a tool can amplify or attenuate the data itself and save the result to another, gain-adjusted audio file; this is not perfectly reversible in most cases.

Apply track Replaygain to MP3 data Will use the track values computed to apply the gain to your audio file and consequently change them. It's not recommended as it will change your files and alter them while foobar will do it by itself without having to change the files. Could be useful for files used on portable devices with no Replaygain support. Apply album Replaygain to MP3 data Will use the album values computed to apply the gain to your audio file and as a consequenc change them.

RQ : If replaygain values are already computed, it won't recompute them to earn time. Computing Replaygain values is quite slow: about 1 min for 20 tracks generally, the scanner works at 78X.

As a consequence, compute regurlarly Replaygain values to avoid long hours of computing. Moreover, computing those values uses quite a lot of your CPU resource. If anormal values are found, recompute or do not use Replaygain tags. Replaygain and Playback Source mode : Track: will use track values to process Album: will use album valuees to process RQ: Which mode should I use and why?

If you usually listen to single tracks, use track mode. Not one bit. Got it? Hi, Thanks a lot to all of you for your answers. I'll use ReplayGain then ViperScythe Member. Joined Dec 19, Messages 14 Likes It is destructive IF In my case if i use Replay Gain, i have to switch my amps to High Gain, which increase noise and introduce distortion that is quite audible to my ears, but without RG i can easily listen to my music in comfortable volume without have to turning on my High Gain.

And by the way, even with the same amount of volume produced Vrms , all? High Gain raise noise floor level compared to Low Gain We are talking headphone amps here So that's that. ViperScythe said:. Click to expand This is really more a result of not enough amplification power though. I use a behringer umchd for day to day listening, and according to the review here, SINAD improves dramatically at -3db, so I set my output to that from behringer's asio driver. PenguinMusic said:.

Hi, Thanks again to all for your answers. For the compression level in. Unless I am blind, there are no settings in that software to change the. But I use it as it is convenient : I can edit the tags and add them directly to my ripped music collection. For the Replaygain : I will decide to apply it or not. I call it a blessing, that mean you don't have to spend a lot of money to reach eargasm. Last edited: Jan 9, Forum Donor. Remember if you used replaygain to set the metadata file during ripping or at any other time, the player can be set to either use the file or not.

If not, there should be no altering of the playback in any way, if enabled the software will then attempt to equalize volume levels according to the algorithm used and your personal choices. Joined Nov 15, Messages 1, Likes 1, Last edited: Jan 10, When someone decides to apply RG to the audio samples and overwrites the files, it is destructive. Sal said:. I've not seen software that allows the files to be permanently altered in this way? L Addicted to Fun and Learning. I feel this is going be a long post It's not destructive.

Get the newest version 0. Some users have found that applying ReplayGain to music with a large dynamic range - e. This perhaps because the algorithm isn't really smart enough to handle the big difference between "peak" and "average" volume.

There's no harm in trying it for a few tracks - you can always turn off ReplayGain in SqueezeCenter, or delete the tags, later. Now drag all of the files you want to ReplayGain, you can do this on more than one album and indeed an entire collection at a time.