Electroacoustic transducer, and associated assembly and system

An acoustic transducer that converts an acoustic signal into an electrical signal, comprising:

• a mobile element that is mobile under the effect of said acoustic signal;
• a fixed element arranged opposite the mobile element;
• a cavity (4);
• and
• a dissipative element (3) interposed between the mobile element and the fixed element,
• wherein a coupled system, constituted by the mobile element, the dissipative element (3), and the cavity (4), has a natural frequency between 20 Hz and 20 KHz corresponding to a resonance frequency of the transducer at which a sensitivity of the transducer is maximum,
• the mobile element, the fixed element, the dissipative element (3) and the cavity (4) being configured so that a quality factor of the acoustic transducer is greater than two,
• wherein the cavity (4) has one of a straight prismatic, cylindrical, or frustoconical general shape, the mobile element forming a first base of the prism, cylinder or frustum, the fixed element being arranged inside said prism, cylinder or frustum, raised with respect to a second base of the prism, cylinder or frustum, and
• wherein a ratio between the surface area of the mobile element and that of the fixed element is less than or equal to ⅙.