Digital filter design for inversion problems in sound reproduction
Digital filter design for inversion problems in sound reproduction
When it is attempted to invert, or eliminate the influence of, a single-channel system such as a loudspeaker response or a room response, some frequencies are usually boosted by an excessive amount by the inverse filter. In particular, inversion of experimentally measured data tends to cause an excessive boost of frequencies just below the Nyquist frequency. A similar problem is encountered when designing digital filters for a multichannel virtual source imaging system such as the stereo dipole. A digital filter design method is presented that allows selective attenuation of unwanted peaks in the spectrum of the reproduced sound by using frequency-dependent regularization.
583-595
Kirkeby, Ole
aac71fe8-acd1-48a1-9d26-f8de12b45443
Nelson, Philip A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
1 July 1999
Kirkeby, Ole
aac71fe8-acd1-48a1-9d26-f8de12b45443
Nelson, Philip A.
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Kirkeby, Ole and Nelson, Philip A.
(1999)
Digital filter design for inversion problems in sound reproduction.
AES: Journal of the Audio Engineering Society, 47 (7), .
Abstract
When it is attempted to invert, or eliminate the influence of, a single-channel system such as a loudspeaker response or a room response, some frequencies are usually boosted by an excessive amount by the inverse filter. In particular, inversion of experimentally measured data tends to cause an excessive boost of frequencies just below the Nyquist frequency. A similar problem is encountered when designing digital filters for a multichannel virtual source imaging system such as the stereo dipole. A digital filter design method is presented that allows selective attenuation of unwanted peaks in the spectrum of the reproduced sound by using frequency-dependent regularization.
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Published date: 1 July 1999
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Local EPrints ID: 468712
URI: http://eprints.soton.ac.uk/id/eprint/468712
ISSN: 0004-7554
PURE UUID: 84b7845a-13d0-421a-9f8b-87368e1db5c9
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Date deposited: 23 Aug 2022 16:56
Last modified: 06 Jun 2024 01:31
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Author:
Ole Kirkeby
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