Passive devices for broadband acoustic acquisition and passive systems for broadband acoustic imagery

Passive device for broadband acoustic acquisition (3) able to communicate with a digital processing unit (4), the device having

• a plurality of microphone sensors (7), each of the sensors being able to generate an electric signal (8) that is representative of an acoustic pressure (9) received by said microphone sensor,
• electronics for processing and digitizing (12) electric signals that are able to adapt the electric signals generated by the microphone sensors and to transform them into digital signals (13) of acoustic pressure,
• transfer electronics (14) able to communicate with a digital processing unit (4) and to make possible the transfer of the digital signals of acoustic pressure from the electronics for processing and digitizing to said digital processing unit,
• the acoustic acquisition device being characterized in that the microphone sensors and the transfer electronics are mounted on a multifunctional rigid support element (17) that incorporates the processing and digitizing electronics.