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Related Experiment Video

Updated: Jan 20, 2026

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

Published on: December 3, 2016

A panoramic continuous compressive beamformer with cuboid microphone arrays.

Yang Yang¹, Zhigang Chu², Yong-Xin Yang³

¹Faculty of Vehicle Engineering, Chongqing Industry Polytechnic College, Chongqing, 401120, China.

Scientific Reports

|August 21, 2019

Summary

This study introduces a panoramic compressive beamformer for accurate acoustic source localization. The new method overcomes limitations of previous techniques, enabling precise direction-of-arrival estimation and source strength quantification.

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Area of Science:

Acoustics
Signal Processing
Array Signal Processing

Background:

Conventional grid-based compressive beamformers face basis mismatch issues, degrading performance when sources are not on the grid.
Existing continuous compressive beamformers with linear or planar arrays are limited to local source regions.

Purpose of the Study:

To develop a panoramic continuous compressive beamformer for accurate acoustic source direction-of-arrival (DOA) estimation and strength quantification.
To overcome the limitations of grid-based and local-region continuous beamformers.

Main Methods:

Utilized cuboid microphone arrays with atomic norm minimization (ANM) and a matrix pencil and paring method.
Developed an alternating direction method of multipliers algorithm for efficient positive semidefinite programming.
Implemented an iterative reweighted ANM to improve sparsity and resolution.

Main Results:

The proposed beamformer accurately estimates DOAs and quantifies acoustic source strengths panoramically.
The method is effective with both standard uniform and sparse cuboid microphone arrays.
Overcame the basis mismatch conundrum and local region limitations of prior methods.

Conclusions:

The developed panoramic continuous compressive beamformer offers a robust solution for wide-area acoustic source analysis.
This technique enhances the accuracy and applicability of compressive beamforming in complex acoustic environments.