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The previous numerical studies confirms that the effect of coupling amongst loudspeakers cannot be neglected in a multiple channel active noise control (ANC) system with several loudspeakers and microphones, placed in a confined space. Depending on the electromechanical properties of the loudspeakers, the coupling happens through the enclosure acoustic modes and this will change the radiation impedance of the loudspeakers. As a result, the performance of the ANC system influence due to the changes of the supplied voltage to the secondary loudspeakers. Nevertheless, the previous investigation rely on the simplified model of the loudspeakers as a solid piston in the ANC frequency range of interest. In this study, we aim to generalize these results by including a detailed finite element model (FEM) of the loudspeaker, in which the electromechanical impedance of a real loudspeaker is simulated numerically and validated experimentally afterwards. The validated loudspeaker is used for the numerical simulation of the ANC system inside an enclosure using the finite element method
Author (s): Mohamady, Samira; Broemme Niclas; Montazeri, Allahyar
Affiliation:
Technical University of Ilmenau; Lancaster University
(See document for exact affiliation information.)
AES Convention: 148
Paper Number:610
Publication Date:
2020-05-06
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Session subject:
Loudspeakers & Microphones
Permalink: https://aes2.org/publications/elibrary-page/?id=20848
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Mohamady, Samira; Broemme Niclas; Montazeri, Allahyar; 2020; An Improved Loudspeaker Model to Study Coupling in an Active Noise Control Setting [PDF]; Technical University of Ilmenau; Lancaster University; Paper 610; Available from: https://aes2.org/publications/elibrary-page/?id=20848
Mohamady, Samira; Broemme Niclas; Montazeri, Allahyar; An Improved Loudspeaker Model to Study Coupling in an Active Noise Control Setting [PDF]; Technical University of Ilmenau; Lancaster University; Paper 610; 2020 Available: https://aes2.org/publications/elibrary-page/?id=20848