This paper presents a model of sound propagation in a duct, for the purpose of active noise control. A physical model generally different from those explored in much of the literature is derived, with non-constant acoustic load impedance at the one end, and a coupled disturbance loudspeaker model at the other end. Experimental results are presented which validate the derived transfer function.

Issue Section:
Technical Papers
Keywords:
active noise control, acoustic impedance, transfer functions, acoustic wave propagation
Topics:
Acoustics, Boundary-value problems, Ducts, Loudspeakers, Noise control, Transfer functions, Pressure
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