Beamforming and other methods for denoising microphone array data - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2019

Beamforming and other methods for denoising microphone array data

Pieter Sijtsma
  • Fonction : Auteur
Jérôme Antoni
Quentin Leclere

Résumé

Measured acoustic data can be contaminated by noise. This typically happens when microphones are mounted in a wind tunnel wall or on the fuselage of an aircraft, where hydrodynamic pressure fluctuations of the Turbulent Boundary Layer (TBL) can mask the acoustic pressures of interest. For measurements done with an array of microphones, methods exist for denoising the acoustic data. Use is made of the fact that the noise is usually concentrated in the diagonal of the Cross-Spectral Matrix, because of the short spatial coherence of TBL noise. This paper reviews several existing denoising methods and considers the use of Conventional Beamforming, Source Power Integration and CLEAN-SC for this purpose. A comparison between the methods is made using synthesized array data.
Fichier principal
Vignette du fichier
AIAA_denoising_v3.2.pdf (588.07 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02147804 , version 1 (05-06-2019)

Identifiants

Citer

Pieter Sijtsma, Alice Dinsenmeyer, Jérôme Antoni, Quentin Leclere. Beamforming and other methods for denoising microphone array data. 2019 AIAA/CEAS Aeroacoustics conference, May 2019, Delft, Netherlands. ⟨hal-02147804⟩
72 Consultations
270 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More