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Communication Dans Un Congrès Année : 2010

Prediction of harmonic distortion generated by electro-dynamic loudspeakers using cascade of Hammerstein models

Résumé

Audio rendering systems are always slightly nonlinear. Their non-linearities must be modeled and mea- sured for quality evaluation and control purposes. Cascade of Hammerstein models describes a large class of non-linearities. To identify the elements of such a model, a method based on a phase property of exponential sine sweeps is proposed. A complete model of non-linearities is identified from a single mea- surement. Cascade of Hammerstein models corresponding to an electro-dynamic loudspeaker are identified this way. Harmonic distortion is afterward predicted using the identified models. Comparisons with clas- sical measurements techniques show that harmonic distortion is accurately predicted by the identified models over the entire audio frequency range for any desired input amplitude.
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Dates et versions

hal-00619357 , version 1 (06-09-2011)

Identifiants

  • HAL Id : hal-00619357 , version 1

Citer

Marc Rébillat, Romain Hennequin, Etienne Corteel, Brian F.G. Katz. Prediction of harmonic distortion generated by electro-dynamic loudspeakers using cascade of Hammerstein models. 128th Convention of the Audio Engineering Society, May 2010, London, United Kingdom. pp.7993. ⟨hal-00619357⟩
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