噪声与振动控制Issue(4)：200-206,7.DOI:10.3969/j.issn.1006-1335.2013.04.042
声场重构中消除鬼影和提高重构精度的方法
Method of Eliminating Ghost Images and Improving Reconstruction Precision in Acoustic-fields Reconstruction
摘要
Abstract
The ghost images can occur easily in the reconstruction of acoustic fields with the use of beamforming algorithm, which leads to a terrible difficulty for accurate identification of the reconstructed acoustic fields. After detailed deduction of the beamforming algorithm, the relation between the shape parameters of microphone array and the ghost-images occurrence was obtained, and the method for eliminating the ghost images were attained. It was found that after the elimination of ghost images, the reconstruction precision would be improved if the value of D/λwas increased by means of optimization design of the array’s configuration. Finally, the effectiveness and feasibility of this method was verified by some experiments of acoustic-field reconstruction of some pure sound and narrow-band noises.关键词
声学/声场重构/波束形成/鬼影/重构精度Key words
acoustics/reconstruction of acoustic fields/beamforming/ghost image/reconstruction precision分类
通用工业技术引用本文复制引用
付强,黎敏,樊悦,魏龙..声场重构中消除鬼影和提高重构精度的方法[J].噪声与振动控制,2013,(4):200-206,7.基金项目
国家重大科学仪器设备开发专项(2011YQ14014507)；中央高校基本科研业务费专项资金(FRF-AS-12-003)；中央高校基本科研业务费专项资金(FRF-MP-12-002A) （2011YQ14014507）
