NDLI: State space modeling of an acoustic duct with an end-mounted speaker

Content Provider	IEEE Xplore Digital Library
Author	Venugopal, R. Bernstein, D.S.
Copyright Year	1996
Description	Author affiliation: Dept. of Aerosp. Eng., Michigan Univ., Ann Arbor, MI, USA (Venugopal, R.)
Abstract	This paper develops a state space model of an acoustic duct with end-mounted speakers. The initial model formulation introduces the forcing term as a boundary condition. The shifted particle velocity is then defined to transform the nonhomogeneous boundary condition to a homogeneous boundary condition and thus develop the state space model. It is shown that the speaker and acoustic duct interact by means of feedback in which the speaker creates an acoustic field, which, in turn, affects the motion of the speaker baffle. The interaction between the speaker and acoustic dynamics is studied using positive real closed-loop feedback analysis, and shifts in the modal frequencies of the duct due to the presence of the end-mounted speaker are predicted.
Starting Page	954
Ending Page	959
File Size	484603
Page Count	6
File Format	PDF
ISBN	0780329759
DOI	10.1109/CCA.1996.559019
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	State-space methods Ducts Loudspeakers Boundary conditions Frequency Feedback Aerodynamics Actuators Acoustic noise Active noise reduction
Content Type	Text
Resource Type	Article

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State space modeling of an acoustic duct with an end-mounted speaker