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Boundary surface control (BoSC) is a useful method to reproduce sound ?eld physically. However, playback requires multi-channel inverse ?ltering and it is dif?cult to real-time processing with a simple computer like a laptop. Therefore, the authors proposed an “rough” reproduction system by a method for thinning out inverse ?lters of BoSC. This engineering brief report discusses which inverse ?lter should be thinned out. As a result of numerical simulation, the accuracy of the sound ?eld reproduction decreased relatively slightly when using a directional microphone array and deleting the ?lter passing through the loudspeaker far from the microphone.
Author (s): Kashiwazaki, Hiroshi; Omoto, Akira
Affiliation:
Kyushu University
(See document for exact affiliation information.)
Publication Date:
2018-07-06
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Session subject:
Sound field reproduction; Boundary surface control; Inverse filter matrix; Directional microphone array
Permalink: https://aes2.org/publications/elibrary-page/?id=19659
(392KB)
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Kashiwazaki, Hiroshi; Omoto, Akira; 2018; Reduction of Number of Inverse Filters for Boundary Surface Control [PDF]; Kyushu University; Paper EB2-6; Available from: https://aes2.org/publications/elibrary-page/?id=19659
Kashiwazaki, Hiroshi; Omoto, Akira; Reduction of Number of Inverse Filters for Boundary Surface Control [PDF]; Kyushu University; Paper EB2-6; 2018 Available: https://aes2.org/publications/elibrary-page/?id=19659