AES Rome 2013
Tutorial T14

Monday, May 6, 14:15 — 16:15 (Sala Alighieri)


T14 - Rub & Buzz and Other Irregular Loudspeaker Distortion

Wolfgang Klippel, Klippel GmbH - Dresden, Germany

Loudspeaker defects caused by manufacturing, aging, overload, or climate impact generate a special kind of irregular distortion commonly known as rub & buzz, which are highly audible and intolerable for the human ear. Contrary to regular loudspeaker distortions defined in the design process, the irregular distortions are hardly predictable and are generated by an independent process triggered by the input signal. Traditional distortion measurements such as THD fail in the reliable detection of those defects. This tutorial discusses the most important defect classes, new measurement techniques, audibility, and the impact on perceived sound quality.

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