ReplayGain ~ Advanced Volume Normalization

ReplayGain is … a technique invented to achieve the same perceived playback loudness of audio files. ~ Hydrogenaudio Knowledgebase

ReplayGain … allows players to normalize loudness for individual tracks or albums. This avoids the common problem of having to manually adjust volume levels between tracks when playing audio files from albums that have been mastered at different loudness levels. ~ http://en.wikipedia.org/wiki/ReplayGain

If you’re using track gain, every song is played at 89 dB; no song is any louder than any other. If you’re using album gain, tracks will be played at 89 dB plus or minus a few dB, depending on how much louder or quieter each track is relative to the other tracks on the album. By definition, album gain is not going to make all tracks as loud as possible; the quieter tracks are going to remain that much quieter than the louder tracks, and they’ll average out to 89. ~ Hydrogen Audio

Using ReplayGain in Foobar

First set the ReplayGain target values:

Preferences / Playback / ReplayGain
Source mode: album
Processing: apply gain and prevent clipping according to peak

Preferences - Playback

Preferences/Playback/ReplayGain

Recommended Values:

Set Preferences / Preamp / Without RG values: to around -8.0 db

If you are also playing tracks which aren’t RG-tagged, they’ll be playing quite loud in comparison to the RG-tagged ones. To mitigate that, you can set the “Without RG info” Preamp level to, say, -11.9. This will make the player pretend they have -11.9 dB album gain. Thus if you played a non-RG-tagged copy of that loudest track, it would be played at 89 dB instead of its natural 100.91 dB, and would thus match the level that all the RG-tagged tracks are played at. However, then the quieter non-RG-tagged tracks would still be that much quieter. So you may find -8 or so to be a better “without RG info” preamp level, on average.~ HA Forum

I usually set my non-RG pre-amp to somewhere in the range of -7.0 dB to -9.0 dB. ~ HA Forum

I recommend setting the slider labelled “Without RG info” to -8.0 (that’s minus eight) or less. ~ http://www.bobulous.org.uk/misc/Replay-Gain.html

If you listen to modern music -7dB/-10dB value should be correct. If you listen to older music, keep the value a bit lower because the average level of recently released tracks are higher. ~ http://eolindel.free.fr/foobar0.9/Replaygain.php

Next scan files:

  • Select Files / Right mouse / ReplayGain / Scan selection as single album (adds album and track ReplayGain tags)

Context - ReplayGain

ReplayGain - Scanning - small

Foobar ReplayGain Override Component

Provides a way to specify which ReplayGain modes to use for each playback order. Track gain is probably desirable for random playback while with regular playback album gain is more suitable.

Preferences - ReplayGain override.PNG
Download ~ http://www.foobar2000.org/components/view/foo_rg_trn

ReplayGain in Winamp

WinAmps’s use of these RG tags is enabled / disabled via the General Preferences – Playback – Replay Gain options ~ http://forums.winamp.com/showthread.php?t=345520

Additional References:

http://wiki.hydrogenaud.io/index.php?title=ReplayGain
http://wiki.hydrogenaud.io/index.php?title=ReplayGain_1.0_specification
http://replaygain.hydrogenaud.io/proposal/index.html
http://replaygain.hydrogenaud.io/proposal/calibration.html
http://www.hydrogenaud.io/forums/index.php?showtopic=96391
http://www.hydrogenaud.io/forums/index.php?showtopic=35255
http://www.techspot.com/tweaks/foobar/index.shtml
http://stephan.win31.de/music.htm#rg-levels

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