Conversion of multichannel sound signals based on spherical harmonics with L1-norm constraint - 文章详情页

作者：

Bu, B. (Bu, B..) | Bao, C.-C. (Bao, C.-C..) (学者：鲍长春) | Jia, M.-S. (Jia, M.-S..) | Zha, M.-F. (Zha, M.-F..)

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Scopus

摘要：

This　paper　proposes　a　novel　method　for　converting　multichannel　signals　of　an　original　system　into　that　of　an　alternative　system.　Based　on　spherical　harmonics　expansion,　we　present　a　conversion　formulation　to　derive　matching　equation　which　explains　a　direct　relationship　between　weighting　matrix　and　positions　of　loudspeakers　located　on　both　systems.　The　solution　of　matching　equation　can　be　found　from　matrix　inverse　where　under-determined　problem　might　exist.　To　solve　this　problem,　l1-norm　minimization　is　proposed　for　finding　a　minimum　number　constraint　of　the　active　loudspeakers.　Simulations　confirm　that　the　proposed　method　is　able　to　reconstruct　original　sound　field　within　a　finite　region　of　listening　and　has　better　wideband　performance　than　traditional　method.　©　2015　IEEE.

关键词：

Acoustic signal processing; sound field reproduction; spatial and multichannel audio; spherical harmonics expansion

作者机构：

[ 1 ] [Bu, B.]Speech and Audio Signal Processing Laboratory, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Bao, C.-C.]Speech and Audio Signal Processing Laboratory, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Jia, M.-S.]Speech and Audio Signal Processing Laboratory, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Zha, M.-F.]Speech and Audio Signal Processing Laboratory, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China

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