Volume equalization.

Loudness equalization relies on audio understanding and human ear perception to reduce loudness differences that the human ear can perceive.

In other words, it is about using the knowledge we have about the perception of sound in the human ear and thus carrying out certain algorithms to ensure that these differences are not perceived as much. That is the well-known volume equalization.

The volume equalizer tries to normalize the volume of an audio, analyzing its sound. What this means is that it will try to balance the loudest and softest perceived parts of the audio and depending on that, it will either increase the volume or decrease it so that it sounds at a constant level. It will give a boost to the volume if it detects that this is necessary or on the contrary, it will make this volume lower.

Mp4Gain and volume equalization

Mp4Gain will use this volume equalization to balance the volume levels of the different audios or videos, to make them sound at balanced volume levels.

Mp4Gain is the only volume equalizer that achieves this balance of audio levels, regardless of whether they are audio or video files, in their most popular formats.