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ReplayGain & Normalization
==========================
This module provide a simple utility to calculate a `Normalized`_ / `ReplayGain`_
volume for media cues. The values are used as *Normalized Volume* for the ``Volume``
media-element, if a ReplayGain value is already stored in the media-file metadata
(e.g ID3 tags) it will be used.
.. Note::
The original files are left untouched.
How to use
----------
Via ``Tools > ReplayGain / Normalization`` menu the following options are provided:
* **Calculate**: Open a dialog to set some option and start the calculation
* **Reset all**: Reset to 0dB the normalized volumes of all cues
* **Reset selected**: Reset to 0dB the normalized volumes, only for the selected cues
.. image:: ../media/replaygain_dialog.png
:alt: Linux Show Player - ReplayGain dialog
:align: center
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* **ReplayGain**: Use ReplayGain normalization using the reference value in dB SPL (89 is the standard default)
* **Normalize**: Use a simple normalization to the reference value in dB (0 is the maximum value)
* **Only selected cues**: apply only to the currently selected cues
* **Thread number**: Number of concurrent/parallel calculations (default to the cup cores)
.. Note::
that the process may require some time, depending on the CPU, the number
and size of the files involved.
.. _Normalized: https://en.wikipedia.org/wiki/Audio_normalization
.. _ReplayGain: https://en.wikipedia.org/wiki/ReplayGain
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