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Related Experiment Video

Updated: Jun 23, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Real-time algorithm for acoustic imaging with a microphone array.

¹Department of Mechanical and Aerospace Engineering, College of Engineering, Peking University, Beijing, 100871, China. huangxun@pku.edu.cn

The Journal of the Acoustical Society of America

|May 12, 2009

Summary

This summary is machine-generated.

A novel observer-based algorithm enhances acoustic phased array testing in aeroacoustics. This real-time processing significantly reduces experimental time and costs by enabling instantaneous defect correction.

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Area of Science:

Aeroacoustic research
Acoustic signal processing

Background:

Acoustic phased arrays are crucial for aeroacoustic testing.
Conventional beamforming algorithms are computationally expensive and require off-line processing.

Purpose of the Study:

To propose an innovative algorithm for real-time acoustic phased array processing.
To overcome the limitations of conventional off-line methods in aeroacoustic research.

Main Methods:

Developed an observer-based algorithm extending time-domain concepts to frequency-domain array processing.
The algorithm operates recursively over sampling blocks.

Main Results:

The proposed algorithm achieves real-time capability, unlike conventional methods.
Enables instantaneous correction of testing defects, reducing overall experimental duration.

Conclusions:

The observer-based algorithm offers a significant advancement for efficient aeroacoustic testing.
Real-time processing capability reduces experimental time and cost.