Active noise control in enclosure with virtual microphone

Auteurs-es

  • Stéphane Renault GAUS, Université de Sherbrooke, Sherbrooke, Que. J1H 2R1, Canada
  • Franck Rymeyko GAUS, Université de Sherbrooke, Sherbrooke, Que. J1H 2R1, Canada
  • Alain Berry GAUS, Université de Sherbrooke, Sherbrooke, Que. J1H 2R1, Canada

Mots-clés :

active noise control, road traffic, error microphones, virtual microphone, local active noise control, confined spaces, quiet zone, fixed primary sources, propeller-induced aircraft cabin noise, moving primary source, road traffic noise

Résumé

This study concerns local active noise control (ANC) in confined spaces. In cases where an active zone of quiet is intended in an enclosure, it is not always practical to place error microphones in this zone. Error microphones placed on the enclosure walls would sometimes be a more convenient solution. This article discusses the concept of a “virtual” microphone, which consists to generate a quiet zone distant from the error microphone used during control. Two virtual microphone algorithms are presented and experimentally tested. Such a virtual microphone technique has been implemented in the past for essentially fixed primary sources with respect to the enclosure (e.g. active control of propeller-induced aircraft cabin noise). The virtual microphone technique is especially examined here in the context of a moving primary source with respect to the enclosure (such as road traffic noise)

Fichiers supplémentaires

Publié-e

2000-09-01

Comment citer

1.
Renault S, Rymeyko F, Berry A. Active noise control in enclosure with virtual microphone. Canadian Acoustics [Internet]. 1 sept. 2000 [cité 15 mai 2026];28(3):72-3. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1296

Numéro

Vol. 28 No. 3 (2000)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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