Weighted block ℓ1 norm induced 2D off-grid compressive beamforming for acoustic source localization: Methodology and applications

Ran Wang, Tao Zhuang, Chenyu Zhang, Qiulan Jing, Liang Yu, Youhong Xiao

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Identifying acoustic sources with high spatial resolution and precision is significant for machinery noise control. Off-grid compressive beamforming is an effective method for creating acoustic maps with a high spatial resolution. In this study, a two-dimensional off-grid compressive beamforming method via weighted block ℓ1 norm regularization (WBS-OCSBF) is proposed. The weighted ℓ1 norm offers a more uniform sparsity penalty compared to the ℓ1 norm. This method can enhance the performance of off-grid compressive beamforming. Additionally, it is easily implemented on mature linear programming solvers and converges with only a few iterations. Numerical simulations are conducted to analyze the effects of several major parameters on the performance of the proposed method. The simulation results demonstrate the superiority of the proposed method over some traditional methods. The proposed method is then validated using a loudspeaker noises localization experiment. A gearbox transmission system and a transformer are used as two specific objects to explore the industrial application value. The proposed method can effectively localize the gear meshing noise and transformer discharge faults with a high spatial resolution.

Original languageEnglish
Article number109677
JournalApplied Acoustics
Volume214
DOIs
StatePublished - Nov 2023

Keywords

  • 2D off-grid model
  • Acoustic imaging
  • Acoustic source localization
  • Compressive beamforming
  • Weighted block ℓ norm

Fingerprint

Dive into the research topics of 'Weighted block ℓ1 norm induced 2D off-grid compressive beamforming for acoustic source localization: Methodology and applications'. Together they form a unique fingerprint.

Cite this