NDLI: MIMO design of Active Noise Controllers for car interiors: Extending the silenced region at higher frequencies

Content Provider	IEEE Xplore Digital Library
Author	Berthilsson, S. Barkefors, A. Sternad, M.
Copyright Year	2012
Description	Author affiliation: Signals & Syst., Uppsala Univ., Uppsala, Sweden (Berthilsson, S.; Barkefors, A.; Sternad, M.)
Abstract	Active Noise Control can provide damping of low-frequency noise in car compartments by feedforward or feedback control. The complicated sound field in reverberant environments limits the spatial volume of efficient sound control. At higher frequencies, damping is in general possible only within a small volume around a control microphone when using a single loudspeaker to produce the control signal. We here investigate how the spatial volume of control, as well as the upper limiting frequency, can be increased by using MIMO feedforward control that uses all loudspeakers of a premium car HiFi system. The results indicate that performance is improved for narrowband as well as broadband noise, resulting in a considerable noise reduction within a 0.3 × 0.3 m area. Compared to a corresponding SISO design that uses one loudspeaker and is optimized for one measurement position, the measured noise damping is improved and the upper limit frequency for control over the whole area is more than doubled, from 200 Hz to 450 Hz. The design requires high-precision identification of acoustic transfer functions from all involved loudspeakers as well as accurate modeling of noise paths.
Sponsorship	IEEE Control Syst. Soc.
Starting Page	6140
Ending Page	6147
File Size	478830
Page Count	8
File Format	PDF
ISBN	9781457710957
ISSN	07431619
e-ISBN	9781457710964
e-ISBN	9781467321020
DOI	10.1109/ACC.2012.6315123
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Noise Frequency measurement Loudspeakers Polynomials Frequency control Feedforward neural networks Position measurement
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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