Title:
SOUND SOURCE POSITIONING METHOD AND SYSTEM, MEDIUM, DEVICE, AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/217082
Kind Code:
A1
Abstract:
A sound source positioning method and system, a medium, a device, and an apparatus. The method comprises: selecting a coordinate system, determining the number of sub-arrays in a distributed microphone array, the positions of the sub-arrays, the number of microphones on each sub-array, and a sampling mode (S1); given a distributed spherical array, constructing a spherical harmonic domain expression of the sound pressure received at each microphone position on each sub-array (S2); dividing the spherical harmonic domain expression of the sound pressure into a basis function and a sound pressure coefficient, according to the addition theorem, deriving a theoretical sound pressure coefficient of the global center of the distributed microphone array under a sound field transfer (S3); according to the Bayesian estimation criterion, estimating an actual sound pressure coefficient at the global center of the distributed microphone array in the actual situation (S4); matching the actual sound pressure coefficient with a weight output by a filter, outputting an output position spectrum, and determining the position of the sound source (S5).
Inventors:
KUANG ZHENG (CN)
MAO JUNWEI (CN)
FAN ZIXUAN (CN)
WEI MINGYANG (CN)
MAO JUNWEI (CN)
FAN ZIXUAN (CN)
WEI MINGYANG (CN)
Application Number:
PCT/CN2023/092752
Publication Date:
November 16, 2023
Filing Date:
May 08, 2023
Export Citation:
Assignee:
AUDFLY TECH SUZHOU CO LTD (CN)
International Classes:
G01S5/20; G01S3/803
Foreign References:
| CN115061089A | 2022-09-16 | |||
| CN107884741A | 2018-04-06 | |||
| CN102866385A | 2013-01-09 | |||
| CN110133579A | 2019-08-16 | |||
| US20130147835A1 | 2013-06-13 |
Other References:
ZHONG QIANG, HUANG QINGHUA: "Localization of multiple acoustic sources based on spherical microphone arrays", COMPUTER ENGINEERING AND APPLICATIONS, HUABEI JISUAN JISHU YANJIUSUO, CN, vol. 48, no. 5, 11 February 2012 (2012-02-11), CN , pages 149 - 152, XP093106862, ISSN: 1002-8331, DOI: 10.3778/j.issn.1002-8331.2012.05.042
孙长伟等 (SUN, CHANGWEI ET AL.): "混响环境下改进的球谐波域L1-SVD声源定位算法 (Improved L1-SVD Sound Localization Algorithm in the Spherical Harmonic Domain under Reverberant Environments)", 武汉大学学报 (理学版) (JOURNAL OF WUHAN UNIVERSITY (NATURAL SCIENCE EDITION)), vol. 64, no. 05, 13 September 2018 (2018-09-13), XP093106865
孙长伟等 (SUN, CHANGWEI ET AL.): "混响环境下改进的球谐波域L1-SVD声源定位算法 (Improved L1-SVD Sound Localization Algorithm in the Spherical Harmonic Domain under Reverberant Environments)", 武汉大学学报 (理学版) (JOURNAL OF WUHAN UNIVERSITY (NATURAL SCIENCE EDITION)), vol. 64, no. 05, 13 September 2018 (2018-09-13), XP093106865
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