A Comparison of Frequency-Domain Microphone Array Methods for the Characterization of Rotating Broadband Noise Sources
The localization and quantification of rotating sound sources is an important challenge in many fields of application. For the motion compensation of rotating sound sources, the two different frequency- domain microphone array methods 'virtual rotating array' and 'modal decomposition of the rotating sound field' are presented and compared to each other. At first, a simulated benchmark case with three discrete rotating broadband sound sources and a non-constant rotational speed is considered. The challenge is the reconstruction of the correct source positions and the source amplitudes. In a second case, a benchmark fan is analyzed to compare the source distribution and source amplitudes of the considered methods. Advantages, disadvantages and limits of the respective methods are shown.
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Document Type: Research Article
Publication date: January 1, 2019
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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