Two source localization arrays based on the far field beamforming method.

This arrays enable an octave band analysis of the different aeroacoustic sources outside the vehicle: rear view mirror, door handle, wheelhousing…

Method Far field beamforming
Microphones number 64 (side/vertical) and 88 (top/horizontal)
Frequency range 630Hz– 8KHz
Output data Sound level and acoustic intensity map calculated on the source surface
Resolution (source separation capability) 17cm at 2KHz

Side and top arrays

Résultats types sur géométrie 2D
Exterior aeroacoustic sources (2D side view)

Résultats types sur géométrie 3D
3D mapping of aeroacoustic sources