Sidechain

A side chain in the context of sound dynamics processing is a feature of compressors that allows for spectral processing, compression keying, and ducking applications, and a feature of gates that is useful for synching external sounds to recorded tracks.

Side chain in the context of organic chemistry and biochemistry has different meanings:

• In organic chemistry and biochemistry a side chain is a part of a molecule attached to a core structure. Often the side chain can vary for a given core. This use is often similar to the term rest or R. See also: Functional group.
• In biochemistry the peptide or protein side chains are the variable parts of amino acids extending from the peptide backbone.

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