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Signal-processing methods such as digital equalization can in theory achieve a reduction in acoustic reverberation. In practice, however, the realization of these methods is only partially successful for a number of objective and subjective (perceptual) reasons. Two of these problems, the dependence of the equalizer performance on the source and receiver positions and the requirement for extremely lengthy filters, are addressed. It is proposed that all-pole modeling of room responses can relax the equalizer filter length requirement, and the use of vector quantization can optimally classify such responses, obtained at different source and receiver positions. Such classification can be used as a spatial equalization library, achieving reduction in reverberation over a wide range of positions within an enclosure, as was confirmed by a number of tests.
Author (s): Mourjopoulos, John N.
Affiliation:
Wire Communications Laboratory, Electrical Engineering Department, University of Patras, Patras, Greece
(See document for exact affiliation information.)
Publication Date:
1994-11-06
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Permalink: https://aes2.org/publications/elibrary-page/?id=6921
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Mourjopoulos, John N.; 1994; Digital Equalization of Room Acoustics [PDF]; Wire Communications Laboratory, Electrical Engineering Department, University of Patras, Patras, Greece; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=6921
Mourjopoulos, John N.; Digital Equalization of Room Acoustics [PDF]; Wire Communications Laboratory, Electrical Engineering Department, University of Patras, Patras, Greece; Paper ; 1994 Available: https://aes2.org/publications/elibrary-page/?id=6921