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Compression

Compression reduces the dynamic range of a signal by controlling louder parts.

Level relevance: introduced at Nat 4; tagged for every later level where the same concept remains useful.

Explanation

Compression makes the difference between quieter and louder parts smaller. This can help a vocal sit more steadily in a mix, make drums feel punchier, or control peaks before clipping. Too much compression can make audio sound flat or lifeless, so it should be used with purpose. It is both a corrective and creative tool.

Topics

MixingDynamics processingProcessing
Curriculum statussupporting vocabulary
Review statusdraft

Related terms

Dynamic range

Dynamic range is the difference between the quietest and loudest parts of a sound.

View term

Limiting

Limiting is strong compression used to stop peaks going above a set level.

View term

Gain

Gain controls signal level at the input or processing stage of the signal path.

View term

Normalisation

Normalisation raises or lowers a file’s level so its highest peak reaches a chosen target.

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