Pumping (audio)

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In sound recording and reproduction, and music, pumping or gain pumping is a creative misuse of compression, the "audible unnatural level changes associated primarily with the release of a compressor."[1] There is no correct way to produce pumping, and according to Alex Case, the effect may result from selecting "too slow or too fast...or too, um, medium" attack and release settings.[2]

The technique is common in rock and

Exit Music (For a Film)", and clear examples include the electro percussion loop in Radiohead's "Idioteque", Benny Benassi's "Finger Food", and the ride cymbals on Portishead's "Pedestal".[3]
: 82–83 

Side-chain pumping is a more advanced technique using a compressor's side-chain feature which, "uses the amplitude envelope (dynamics profile) of one track as a trigger for a compressor used in another track." When the amplitude of a note of the side-chained instrument surpasses the threshold setting of the compressor it attenuates the compressed instrument, producing volume swells offset from the side-chained note by a selected release time.

Madonna's "Get Together" and Benny Benassi's "My Body (feat. Mia J)".[3]
: 84 

References

  1. ISBN 978-1-4411-5607-5
    .
  2. ^ Case, Alex (2007). Sound FX, p.160. Focal Press. Cited in Hodgson (2010), p.81.
  3. ^
    ISBN 9781441124098
    .
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