Acoustic source detection and localization using generalized likelihood ratio test in the spherical harmonic domain

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2024-12-02 DOI:10.1016/j.apacoust.2024.110434

Dhiya Eddine Rabia Oulahcine , Mustapha Benssalah , Nabil Haddad , Daniele Salvati , Osama Mahfoudia

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引用次数: 0

Abstract

In recent years, spherical microphone arrays have gained significant attention for analyzing acoustic signals due to their consistent spatial resolution in both elevation and azimuth, added to the ability to transform signals into the spherical harmonics domain. This paper deals with the localization of active sound sources in the presence of noisy and silent recordings. In the literature, the aspects of detection and localization of acoustic signals are often addressed separately. However, the present paper proposes the spherical harmonic generalized likelihood ratio test (SH-GLRT) algorithm which concurrently addresses both aspects while maintaining a fixed false-alarm probability (Pfa). In this context, the acoustic source localization is considered as a detection problem, and the necessary mathematical development is provided. Precisely, the resulting detection thresholds for four spherical harmonics orders are considered, and the detection performance is assessed and compared to the state-of-the-art methods. In addition, the LOCATA challenge dataset is employed for validation, which emphasizes the efficiency of the proposed method.

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基于球谐域广义似然比检验的声源检测与定位

近年来，球形麦克风阵列由于其在仰角和方位角上具有一致的空间分辨率，以及将信号转换为球谐域的能力，在分析声信号方面受到了极大的关注。本文讨论了在有噪声和无噪声记录的情况下，有源声源的定位问题。在文献中，声信号的检测和定位往往是分开讨论的。然而，本文提出了球谐广义似然比检验（SH-GLRT）算法，该算法在保持固定的虚警概率（Pfa）的同时兼顾了这两个方面。在此背景下，声源定位被视为一个检测问题，并提供了必要的数学发展。准确地说，考虑了四个球面谐波阶的检测阈值，并评估了检测性能，并与最先进的方法进行了比较。此外，采用LOCATA挑战数据集进行验证，强调了所提方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.