Multiple-point equalization in a room using adaptive digital filters
Multiple-point equalization in a room using adaptive digital filters
A method is present for designing an equalization filter for a sound-reproduction system by adjusting the filter coefficients to minimize the sum of the squares of the errors between the equalized responses at multiple points in the room and delayed versions of the original electrical signal. Such an equalization filter can give a more uniform frequency response over a greater volume of the enclosure than a filter designed to equalize at one point only. The results of computer simulations are presented for equalization in a 'room' with dimensions and acoustic damping typical of a car interior, using various algorithms to adapt automatically the coefficients of a digital equalization filter.
899-907
Elliott, S. J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
November 1989
Elliott, S. J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Nelson, P. A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Elliott, S. J. and Nelson, P. A.
(1989)
Multiple-point equalization in a room using adaptive digital filters.
AES: Journal of the Audio Engineering Society, 37 (11), .
Abstract
A method is present for designing an equalization filter for a sound-reproduction system by adjusting the filter coefficients to minimize the sum of the squares of the errors between the equalized responses at multiple points in the room and delayed versions of the original electrical signal. Such an equalization filter can give a more uniform frequency response over a greater volume of the enclosure than a filter designed to equalize at one point only. The results of computer simulations are presented for equalization in a 'room' with dimensions and acoustic damping typical of a car interior, using various algorithms to adapt automatically the coefficients of a digital equalization filter.
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Published date: November 1989
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Copyright 2004 Elsevier B.V., All rights reserved.
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Local EPrints ID: 468661
URI: http://eprints.soton.ac.uk/id/eprint/468661
ISSN: 0004-7554
PURE UUID: ca3273d6-7cd2-4cf0-af1f-18a58c4cc0fe
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Date deposited: 19 Aug 2022 17:06
Last modified: 20 Aug 2022 01:31
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