Difference between revisions of "ReplayGain"

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m (JordanN moved page Measuring Volume within Audacity to ReplayGain over redirect: Making title more specific for the page)
 
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It is helpful to know whether your volume is correct ''before'' exporting your recording to an MP3 file. There is a plug-in for Audacity called '''ReplayGain''' which allows you to do this.
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[[File:ReplayGain,_shown_within_Audacity.png|thumb|ReplayGain, showing how to access it from the '''Effect''' menu]]
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It is helpful to know whether your volume is correct ''before'' exporting your recording to an MP3 file. There is a Nyquist plug-in for Audacity called '''ReplayGain''' which allows you to do this. It also provides a facility for Equal Loudness Normalization (ie for amplifying to the required level).
  
The latest version of [http://forum.audacityteam.org/download/file.php?id=4685 ReplayGain.ny] both analyses ''and'' has the facility for Equal Loudness Normalization (i.e. amplifying to the required level), and appears in the Effect menu in versions of Audacity 2.1.0 and later.
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==ReplayGain: installation==
  
There is an earlier version of ReplayGain.ny which analyses the volume only and indicates by how much you need to amplify + (or de-amplify -) to achieve the desired volume of 89 dB. This version appears in the Analyze menu in 2.0.3 and in the Effect menu in 2.1.0. 
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'''<font color="red">Important:</font>''' first download the latest version of Audacity from [https://www.audacityteam.org/download '''this page''']. You may need to right-click on the link and select Save Link As. It's important that you start with the latest version, as earlier versions used a different method of installing plug-ins. You will also need to download the ReplayGain plugin from  [https://forum.audacityteam.org/download/file.php?id=26216 '''here'''] then follow the relevant instructions below. These instructions should work for Windows, Mac and Linux.
  
To install this plug-in,
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=== Basic installation ===
* Save the file to your computer - your desktop or somewhere where you can easily find it.
 
* Now browse to the folder in which Audacity is installed. It's probably in C:\Program Files\Audacity) and then open the Plug-Ins folder.
 
* Drag the file you saved into the Plug-Ins folder.
 
* When you start Audacity, look for ReplayGain under the Effect or Analyze menu.  If you don’t see it, go to Analyze | Manage, find ReplayGain and “enable” it.  It will then appear in either the Effect or Analyze drop down menu (depending on the version you have installed).
 
  
'''<font color="red">N.B.</font>''' Please be aware that this plug-in does not warn you if amplification will cause [http://wiki.librivox.org/index.php/Setting_Recording_Input_Level#Peaking_.28Clipping.29 clipping] when you Normalize. Check by '''View | Show Clipping''' and then '''View | Fit in Window'''. If red vertical lines are showing, this means that the audio has reached a level of volume where your voice may be distorted. If this happens, click 'Undo' to undo the Normalization, and use the '''Effect | Amplify''' feature '''without''' the 'Allow Clipping' box checked.
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*Place the ReplayGain.ny file in the Plug-Ins folder inside the Audacity installation folder. On Windows computers, this is usually under "Program Files". On Mac OS X, it is usually under "Applications". On Mac you can Right click on the  audacity icon and click '''show package contents'''. On Linux it is often easiest to create a plug-ins folder ~/.audacity-files/plug-ins/
 +
*Restart Audacity, then the ReplayGain Plug-ins will appear underneath the divider in the '''Analyze''' menu.
 +
*You then need to go to the '''Tools''' menu and click on '''Add/Remove Plug-ins'''. Scroll down to '''ReplayGain''', left click on it and click on '''Enable'''
  
There is an explanatory video [https://www.youtube.com/watch?v=Pz4GF3HEXV4 here] which walks you through how to use this plug-in.
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=== Advanced ===
Installation on Windows 10 is discussed [https://forum.librivox.org/viewtopic.php?f=23&t=63102 here].
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You mostly don't need to worry about where Audacity actually stores the plugin, but in case you are interested, it's here:
  
The author of these plug-ins explains the use of the plug-in in the Audacity forum [http://forum.audacityteam.org/viewtopic.php?p=167758#p167758 here].
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==== Windows ====
 +
* Browse to the folder within ''This PC.'' in which Audacity is installed: it's probably under ''OS (C:)'', and within that ''Program Files (x86)''. There, you should find an ''Audacity'' folder at the top, or near it. In older versions of Windows you may need to look in  ''C:\Program Files\Audacity'' or ''C:\Program Files (x86)''
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* Browse to the ''Plug-Ins'' subfolder.
 +
 
 +
==== MacOS ====
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User plugins are stored in ''~/Library/Application Support/audacity/Plug-Ins''.
 +
 
 +
==== Linux ====
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Probably in somewhere like ''/home/USERNAME/.audacity-data/Plug-Ins''). Note that ''.audacity-data'' is a hidden folder.
 +
 
 +
== Using the plugin ==
 +
 
 +
The author explains use of the plugin in the Audacity forum [http://forum.audacityteam.org/viewtopic.php?p=167758#p167758 here].
 +
 
 +
There is an explanatory video [https://www.youtube.com/watch?v=Pz4GF3HEXV4 here].
 +
 
 +
'''<font color="red">N.B.</font>''' Please be aware that this plug-in does not warn you if amplification will cause [http://wiki.librivox.org/index.php/Setting_Recording_Input_Level#Peaking_.28Clipping.29 clipping] when you Normalize. Check by '''View | Show Clipping''' and then '''View | Fit in Window'''. If red vertical lines are showing, this means that the audio has reached a level of volume where your voice may be distorted. If this happens, click Undo to undo the Normalization, and use the '''Effect | Amplify''' feature ''without'' the Allow Clipping box checked.
 +
 
 +
== Further reading ==
 +
* More technical details for the ReplayGain plugin can be found [http://wiki.hydrogenaud.io/index.php?title=ReplayGain here] (the installation instructions are out of date).
 +
 
 +
== See also ==
 +
* [https://wiki.audacityteam.org/wiki/Download_Nyquist_Plug-ins This official Audacity page] gives more information on downloading and installing plugins generally.

Latest revision as of 14:45, 17 February 2021

ReplayGain, showing how to access it from the Effect menu

It is helpful to know whether your volume is correct before exporting your recording to an MP3 file. There is a Nyquist plug-in for Audacity called ReplayGain which allows you to do this. It also provides a facility for Equal Loudness Normalization (ie for amplifying to the required level).

ReplayGain: installation

Important: first download the latest version of Audacity from this page. You may need to right-click on the link and select Save Link As. It's important that you start with the latest version, as earlier versions used a different method of installing plug-ins. You will also need to download the ReplayGain plugin from here then follow the relevant instructions below. These instructions should work for Windows, Mac and Linux.

Basic installation

  • Place the ReplayGain.ny file in the Plug-Ins folder inside the Audacity installation folder. On Windows computers, this is usually under "Program Files". On Mac OS X, it is usually under "Applications". On Mac you can Right click on the audacity icon and click show package contents. On Linux it is often easiest to create a plug-ins folder ~/.audacity-files/plug-ins/
  • Restart Audacity, then the ReplayGain Plug-ins will appear underneath the divider in the Analyze menu.
  • You then need to go to the Tools menu and click on Add/Remove Plug-ins. Scroll down to ReplayGain, left click on it and click on Enable

Advanced

You mostly don't need to worry about where Audacity actually stores the plugin, but in case you are interested, it's here:

Windows

  • Browse to the folder within This PC. in which Audacity is installed: it's probably under OS (C:), and within that Program Files (x86). There, you should find an Audacity folder at the top, or near it. In older versions of Windows you may need to look in C:\Program Files\Audacity or C:\Program Files (x86)
  • Browse to the Plug-Ins subfolder.

MacOS

User plugins are stored in ~/Library/Application Support/audacity/Plug-Ins.

Linux

Probably in somewhere like /home/USERNAME/.audacity-data/Plug-Ins). Note that .audacity-data is a hidden folder.

Using the plugin

The author explains use of the plugin in the Audacity forum here.

There is an explanatory video here.

N.B. Please be aware that this plug-in does not warn you if amplification will cause clipping when you Normalize. Check by View | Show Clipping and then View | Fit in Window. If red vertical lines are showing, this means that the audio has reached a level of volume where your voice may be distorted. If this happens, click Undo to undo the Normalization, and use the Effect | Amplify feature without the Allow Clipping box checked.

Further reading

  • More technical details for the ReplayGain plugin can be found here (the installation instructions are out of date).

See also