A review for the noise source identification methods based microphone array

Abstract

Sound source identification is an important prerequisite for noise control. In recent years, new methods of sound source identification have been developed to improve the robustness of source identification. In this paper, a comprehensive review of noise source identification methods is developed to summarize its developing status and engineering applications. At first, a microphone array which is to acquire the sound pressure field is described. And then, the sound field visualization methods (beamforming and acoustic holography) and their advantages and disadvantages are reviewed. Finally, to improve the identification accuracy of the moving sound source, the hybrid acoustic holography methods with more generality and robustness are reviewed. Through the comparison and summary of the sound source identification methods, we expect this work may provide a potential guidance for the subsequent research studies in the field of sound source identification.

Research on multi-sound source localization performance based on leaf-shaped microphone array

“…The microphone array combined with the beamforming algorithm can realize the functions of sound source identification, localization, enhancement, and so on, which provides strong support for the further processing of the sound signal to finally realize the equipment detection and fault diagnosis [1][2][3]. With the wide application of microphone arrays in various fields, the structure design of microphone arrays has also become a new research direction.…”

Harmonic frequency and direction joint estimation for airborne acoustic target localization

“…The microphone array based on sound source localization has the advantages of flexible beam control, high spatial resolution, high signal gain and strong interference suppression ability. These advantages make the microphone array system widely used in hearing aids [1] , speech recognition system [2][3] , machining [4] , unmanned aerial vehicles [5][6] and other fields. Conventional beam former (CBF) method adds and fuses the narrowband beam output results at each frequency point without difference, that is, broadband energy detection.…”