Acoustic imaging with spherical microphone array and Kriging
Type de document
Études primaires
Année de publication
2023
Langue
Anglais
Titre de la revue
JASA Express Letters
Résumé
Acoustic imaging can be performed using a spherical microphone array (SMA) and conventional beamforming (CBF) or spherical harmonic beamforming (SHB). At low frequencies, the mainlobe width depends on the SMA radius for CBF and on the order of the spherical harmonics expansion for SHB, which is related to the number of microphones. In this letter, Kriging is used to virtually increase the SMA radius and/or the number of microphones. Numerical and experimental investigations show the effectiveness of Kriging to reduce the mainlobe width and thus improve the acoustic images obtained with a SMA and CBF or SHB. © 2023 Author(s)
Mots-clés
Acoustique, Acoustique, Microphone, Bruit, Noise
Numéro de projet IRSST
2018-0026
Citation recommandée
Padois, T., St-Jacques, J., Rouard, K., Quaegebeur, N., Grondin, F., Berry, A., . . . Doutres, O. (2023). Acoustic imaging with spherical microphone array and Kriging. JASA Express Letters, 3(4), article 042801. https://doi.org/10.1121/10.0017790