Source localization and identification with a compact array of digital mems microphones

Aro Ramamonjy (1) , Eric Bavu (1) , Alexandre Garcia (1) , Sébastien Hengy (2)

1 LMSSC - Laboratoire de Mécanique des Structures et des Systèmes Couplés
2 ISL - Institut franco-allemand de recherches de Saint-Louis

A compact microphone array was developed for source localization and identification. This planar array consists of an arrangement of 32 digital MEMS microphones, concentrated in an aperture of fewer than 10 centimeters, and connected to a computer by Ethernet (AVB protocol). 3D direction of arrival (DOA) localization is performed using the pressure and the particle velocity estimated at the center of the array. The pressure is estimated by averaging the signals of multiple microphones. We compare high order pressure finite differences to the Phase and Amplitude Gradient Estimation (PAGE) method for particle velocity estimation. This paper also aims at presenting a method for UAV detection using the developed sensor and supervised binary classification.

Domaines: Acoustique [physics.class-ph]

Aro Ramamonjy, Eric Bavu, Alexandre Garcia, Sébastien Hengy. Source localization and identification with a compact array of digital mems microphones. 25th International Congress on Sound and Vibration (ICSV25), Jul 2018, Hiroshima, Japan. ⟨hal-02088346⟩