How to make all songs to have equal loudness?

[Member kaye]

Hello Friends!

Suppose I have two mp3 files. One file is louder than the other, that is it has a higher volume.

What software do I use to make them both have the same loudness? I know there’s a program for that but I’m not sure which one.

Additionally, after I have done it, and I have another song to add to the list, do I adjust the volume on this one song only or do I need to include the previous two files to ensure all three songs have the same loudness?

Thank you for your time.

[Anonymous]

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What software do I use to make them both have the same loudness?

websearch: audio normalization

Software choice depends whether you want a player which is capable of applying normalization during playback, or an editing sofware which can batch edit your audio files. If the latter, here’s a page discussing a few alternatives: https://askubuntu.com/questions/246242/how-to-normalize-sound-in-mp3-files

[Member dortega]

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You can do this in Audacity
follow the instructions here
https://brianli.com/how-to-batch-normalize-audio-with-audacity/

or mp3Gain for linux
https://snapcraft.io/mp3gain
https://pkgs.org/download/mp3gain

[Member ex_Koo]

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mpd has these setting to help with normalization. Maybe your player has settings for normalization too..

# Normalization automatic volume adjustments ##################################
#
# This setting specifies the type of ReplayGain to use. This setting can have
# the argument "off", "album", "track" or "auto". "auto" is a special mode that
# chooses between "track" and "album" depending on the current state of
# random playback. If random playback is enabled then "track" mode is used.
# See <http://www.replaygain.org> for more details about ReplayGain.
# This setting is off by default.
#
#replaygain			"album"
#
# This setting sets the pre-amp used for files that have ReplayGain tags. By
# default this setting is disabled.
#
#replaygain_preamp		"0"
#
# This setting sets the pre-amp used for files that do NOT have ReplayGain tags.
# By default this setting is disabled.
#
#replaygain_missing_preamp	"0"
#
# This setting enables or disables ReplayGain limiting.
# MPD calculates actual amplification based on the ReplayGain tags
# and replaygain_preamp / replaygain_missing_preamp setting.
# If replaygain_limit is enabled MPD will never amplify audio signal
# above its original level. If replaygain_limit is disabled such amplification
# might occur. By default this setting is enabled.
#
#replaygain_limit		"yes"
#
# This setting enables on-the-fly normalization volume adjustment. This will
# result in the volume of all playing audio to be adjusted so the output has
# equal "loudness". This setting is disabled by default.
#
#volume_normalization		"no"

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