Acoustic imaging with spherical microphone array and Kriging-Reference-Cited by-同舟云学术

Acoustic imaging with spherical microphone array and Kriging

Published:2023-04-01 Issue:4 Volume:3 Page:
ISSN:2691-1191
Container-title:JASA Express Letters
language:en
Short-container-title:

Author:

Padois Thomas¹^ORCID,St-Jacques Julien¹,Rouard Kévin¹,Quaegebeur Nicolas²,Grondin François²,Berry Alain²^ORCID,Nélisse Hugues³,Sgard Franck³^ORCID,Doutres Olivier¹^ORCID

Affiliation:

1. Department of Mechanical Engineering, École de Technologie Supérieure 1 , 1100 Rue Notre Dame O, Montréal, Québec, H3C 1K3, Canada

2. Université de Sherbrooke 2 , 2500 Boulevard de l'Université, Sherbrooke, Québec, J1K 2R1, Canada

3. Institut de recherche Robert-Sauvé en Santé et en Sécurité du Travail 3 , 505 Boulevard de Maisonneuve O, Montréal, Québec, H3A 3C2, Canada Thomas.Padois@etsmtl.ca , Julien.st-Jacques.1@ens.etsmtl.ca , Kevin.Rouard.1@ens.etsmtl.ca , Nicolas.Quaegebeur@USherbrooke.ca , Francois.Grondin2@USherbrooke.ca , Alain.Berry@USherbrooke.ca , Hugues.Nelisse@irsst.qc.ca , Franck.Sgard@irsst.qc.ca , Olivier.Doutres@etsmtl.ca

Abstract

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.

Funder

Institut de Recherche Robert-Sauvé en Santé et en Sécurité du Travail

Mitacs

Publisher

Acoustical Society of America (ASA)

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics

Link

https://pubs.aip.org/asa/jel/article-pdf/doi/10.1121/10.0017790/16825861/042801_1_10.0017790.pdf

Reference22 articles.

1. Open-sphere designs for spherical microphone arrays;IEEE Trans. Audio Speech Lang. Proc.,2007

2. Spherical harmonics decomposition in inverse acoustic methods involving spherical arrays;J. Sound Vib.,2018