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Multichannel Filtered Inverse LMS Algorithm for ANC: Laboratory Implementation and Testing

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This paper describes the development and implementation of a filtered-inverse least-mean-square (FILMS) algorithm for a multichannel active noise control system (ANCS). The FILMS algorithm is derived from the well-known filtered-x LMS (FXLMS) algorithm with the aim of improving the rate of convergence and reducing the considerable computational load of the multichannel FXLMS algorithm. Mathematical development and equations describing the multichannel FILMS algorithm are presented in the first part of this paper and the laboratory setup and techniques used to implement and test FILMS-based ANCS are described in the second part. Results of the implemented system are presented and discussed.
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Document Type: Research Article

Publication date: September 1, 2009

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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