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On-Line Relaxation Algorithm Applicable to Acoustic Fluctuation for Inverse Filter in Multichannel Sound Reproduction System

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dc.contributor.author Yosuke Tatekura en
dc.contributor.author Shigefumi Urata en
dc.contributor.author Hiroshi Saruwatari en
dc.contributor.author Kiyohiro Shikano en
dc.date.accessioned 2012-07-05T07:00:44Z en
dc.date.available 2012-07-05T07:00:44Z en
dc.date.issued 2005-07 en
dc.identifier.issn 0916-8508 en
dc.identifier.uri http://hdl.handle.net/10061/7807 en
dc.description.abstract In this paper, we propose a new on-line adaptive relaxation algorithm for an inverse filter in a multichannel sound reproduction system. The fluctuation of room transfer functions degrades reproduced sound in conventional sound reproduction systems in which the coefficients of the inverse filter are fixed. In order to resolve this problem, an iterative relaxation algorithm for an inverse filter performed by truncated singular value decomposition (adaptive TSVD) has been proposed. However, it is difficult to apply this method within the time duration of the sound of speech or music in the original signals. Therefore, we extend adaptive TSVD to an on-line-type algorithm based on the observed signal at only one control point, normalizing the observed signal with the original sound. The result of the simulation using real environmental data reveals that the proposed method can always carry out the relaxation process against acoustic fluctuation, for any time duration. Also, subjective evaluation in the real acoustic environment indicates that the sound quality improves without degrading the localization. en
dc.language.iso en en
dc.publisher 電子情報通信学会 ja
dc.rights Copyright (C) 2005 電子情報通信学会. ja
dc.subject sound reproduction en
dc.subject room transfer function en
dc.subject inverse filter en
dc.subject relaxation of inverse filter en
dc.subject on-line adaptation en
dc.title On-Line Relaxation Algorithm Applicable to Acoustic Fluctuation for Inverse Filter in Multichannel Sound Reproduction System en
dc.type.nii Journal Article en
dc.textversion publisher en
dc.identifier.ncid AA10826239 en
dc.identifier.jtitle IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences en
dc.identifier.volume E88-A en
dc.identifier.issue 7 en
dc.identifier.spage 1747 en
dc.identifier.epage 1756 en
dc.relation.doi 10.1093/ietfec/e88-a.7.1747 en

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