Hybrid noise control in ducts

Theodore M. Kostek, Matthew A. Franchek, J. Stuart Bolton

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Presented in this paper is a hybrid noise control scheme for one dimensional acoustic systems. By combining an active noise control system with adaptive-passive elements to form a hybrid system, a more effective system can be produced. Specifically, the power requirement of the ANC is reduced while attenuation occurs over a greater frequency range than the adaptive-passive system alone can achieve. The adaptive-passive element is a tunable Helmholtz resonator. While previous work has focused on tuning Helmholtz resonators subjected to pure tone disturbances, this work contains an algorithm which tunes the resonator in the presence of unmeasurable broadband disturbances. The feedback active noise control system is a generalization of the tight-coupled monopole, and achieves high performance at the natural frequencies of the system. Experimental verification of the hybrid system is included.

Original languageEnglish (US)
Pages (from-to)277-282
Number of pages6
JournalProceedings - National Conference on Noise Control Engineering
StatePublished - 1998
EventProceedings of the 1998 National Conference on Noise Control Engineering. Part 1 (of 3) - Ypsilanti, MI, USA
Duration: Apr 5 1998Apr 9 1998

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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