ReplayGain

[darkcity]

The ReplayGain plugin is badly named. It does not use the ReplayGain system, that tags audio files with volume information. Instead it modifies the actual audio information.

For more information about ReplayGain see:
https://en.wikipedia.org/wiki/ReplayGain

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It would be better if the plugin analysed the audio then added tag information.

[steve]

It does not use the ReplayGain system, that tags audio files with volume information.

"ReplayGain" is an algorithm for measuring perceived loudness.
Passing that information to the player via "tags" is one method of applying ReplayGain. However, not all applications support ReplayGain tags, so an alternative way to apply ReplayGain is to amplify the audio by an amount based on the ReplayGain analysis. The application "WaveGain" is another application that amplifies the track based on ReplayGain analysis.

This plug-in is a "Nyquist" plug-in. Unfortunately Nyquist is not able to add ReplayGain tags, so if you require that you would need to use a different application (example Foobar 2000).

[darkcity]

Thanks for the reply and heads up on ReplayGain. Looks like I'm going to have to use Foobar2 on WINE.

[steve]

Looks like I'm going to have to use Foobar2 on WINE.

If you're on Linux, why not use one of the native Linux apps for ReplayGain?

[darkcity]

Looks like I'm going to have to use Foobar2 on WINE.

If you're on Linux, why not use one of the native Linux apps for ReplayGain?

There are no native Linux apps that will add ReplayGain tags in ID3 format.

I've install WINE and Foobar2000 now and it well : -) - still interested in native solutions though if anybody know better.

[steve]

There are no native Linux apps that will add ReplayGain tags in ID3 format.

Let me put it another way. Why do you need to add ID3 tags for ReplayGain? MP3 format already has a built-in mechanism for controlling the playback level - that is what MP3Gain uses by default.

[Gale Andrews]

There are no native Linux apps that will add ReplayGain tags in ID3 format.

Have you tried this script which writes APE tags then duplicates them to ID3 tags?

Let me put it another way. Why do you need to add ID3 tags for ReplayGain? MP3 format already has a built-in mechanism for controlling the playback level - that is what MP3Gain uses by default.

The "global gain" in an MP3 frame is limited to 1.5 dB steps, though. So I think one "advantage" of Replay Gain tags is that the volume change can be more precise.


Gale

[steve]

You can tell the difference in volume +/- 0.75 dB ?

[Simon_W]

Thanks for this plugin Steve. I think it is very useful. It seems to be used quite often for 'collections' of music from different sources. I think it is also useful for my live recordings of classical music to obtain a similar volume loudness listening experience of my recordings.

[noiseboyuk]

Hi Steve, newbie forum member, and thanks very much for this plugin.

I've arrived here via a sort of strange route. I'm putting some of my band's stuff on Spotify, and was finding it was knocked back volume-wise, which started me on a long trail that gas got me here. As I understand it, Spotify uses ReplayGain to normalise all content. So my question is - as far as you know, will the ReplayGain figure given by your plugin in Audacity be a pretty reliable indicator of what Spotify will do to a track, or is there more hidden witchcraft in their algorithms? If so, this could be a life-saver.

Many thanks.