Developing active noise control systems for noise attenuation in ducts

The present work describes some of the research effort on Active Noise Control (ANC) being jointly developed by the Catholic University of Minas Gerais (PUC-MINAS) and the Federal University of Minas Gerais (UFMG). Considerations about the implementation of Digital Signal Processing for noise contro...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2002-11, Vol.112 (5_Supplement), p.2428-2428
Main Authors: Campos, Rosely V., Ivo, Rodrigo C., Medeiros, Eduardo B.
Format: Article
Language:English
Online Access:Get full text
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Summary:The present work describes some of the research effort on Active Noise Control (ANC) being jointly developed by the Catholic University of Minas Gerais (PUC-MINAS) and the Federal University of Minas Gerais (UFMG). Considerations about the implementation of Digital Signal Processing for noise control in ducts has been presented. The objective is to establish a study on Active Noise Control in ducts combining geometry and acoustic parameters modification together with adaptive digital filtering implementation. Both algorithm and digital signal processing details are also discussed. The main results for a typical application where real attenuation has been obtained are presented and considered according to their use in developing real applications. The authors also believe that the present text should provide an interesting overview for both designers and students concerned about Active Noise Control in ducts. (To be presented in Portuguese.)
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4779960