Designing an array for performing Near-field Acoustic Holography with a small number of p-u probes

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2016Researchpeer-review

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Near-field acoustic holography (NAH) enables the reconstruction of an entire three-dimensional wave field using data acquired near the sources of sound. An array of sensors can be used in combination with NAH techniques for tackling both time-stationary and transient noise problems. However, such approaches usually require that a large number of transducers is spatially distributed over the area of interest. This paper describes some practical considerations for the design and optimization of a compact sensor array for performing NAH with a small number of sound intensity p-u probes. Two sensor geometries based on hexagonal lattice and polar sampling are assessed and compared to a regular square grid via Monte Carlo simulations accounting for multiple source configurations. Results show that transducer placement plays an important role in the robustness and accuracy of the results, specially in terms of particle velocity reconstructions.
Original languageEnglish
Title of host publicationProceedings of INTER-NOISE 2016
EditorsWolfgang Kropp
Number of pages8
PublisherGerman Acoustical Society (DEGA)
Publication date2016
Pages5895-5902
ISBN (Electronic) 978-3-939296-11-9
Publication statusPublished - 2016
Event45th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2016 - Hamburg, Germany
Duration: 21 Aug 201624 Aug 2016
Conference number: 45
http://www.internoise2016.org/

Conference

Conference45th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2016
Number45
CountryGermany
CityHamburg
Period21/08/201624/08/2016
Internet address

    Research areas

  • Array Design, NAH, p-u probe

ID: 127959143