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Active Noise Control in Ducts

Branko Somek
Martin Dadić
Mladen Maletić

Sažetak

After reviewing the development of active noise control principles, we analyzed the elements of the active noise control system in ducts. On the basis of this analysis, we created a model of these elements. Especially, we brought a model of the loudspeaker in the z-domain, suitable for description of systems containing analog and digital parts.
Such model enabled us to analyze work and convergence of the adaptive signal processing algorithms applied to active noise control. As an example, we analyzed performance of FXLMS algorithm on simplified model of active noise control system in ventilation duct, and have shown a strong influence of the loudspeaker's transfer function on the power spectrum of the error signal.

Ključne riječi

active noise control; adaptive filters; electroacoustical transducers; loudspeakers; ventilation ducts

Hrčak ID:

5595

URI

https://hrcak.srce.hr/5595

Datum izdavanja:

20.10.2001.

Podaci na drugim jezicima: hrvatski

Posjeta: 5.900 *