This article is a draft and may contain incomplete or incorrect information.

Dynamic Range Compression

The dynamic range of an audio track is the difference between the softest and loudest sounds.

Dynamic range compression reduces the gap between those extremes.

Note, this is not the same as a gain or volume boost control.

Compatibility

Dynamic range compression only works when the source audio is AC3 and you are encoding to another format, like AAC. It has no effect on AC3 pass-through or on DTS or MPEG-2 audio.