Micrometric speaker comprising: • A frame, • An electromechanical transducer, and • A mechanical-acoustic transducer comprising a rigid plate, movably mounted in the frame, the electromechanical transducer and the mechanical-acoustic transducer being coupled together such that an urging of the electromechanical transducer moves the mechanical-acoustic transducer relative to the frame and that a corresponding movement of the mechanical-acoustic transducer is converted into acoustic pressure, • the electromechanical transducer comprises at least two piezoelectric actuators (121a, 121b) and at least two elastic strips (122a, 122b), each piezoelectric actuator being associated with an elastic strip to induce, when it is electrically powered, a deformation of the elastic strip by bimetal effect, • the frame comprises a central crossmember from which extend, securely and opposite one another, the two elastic strips (122a, 122b), characterised in that: • the two elastic strips (122a, 122b) extend from the central crossmember of the frame until engaging two so-called coupling lateral edges (132a, 132b) of the mechanical-acoustic transducer, such that each elastic strip (122a, 122b) is in a so-called "recessed-guided" bending configuration, according to which, when the piezoelectric actuators (121a, 121b) are electrically powered, the elastic strips (122a, 122b) are deformed and drive with them, a movement of the rigid plate of the mechanical-acoustic transducer according to a direction substantially perpendicular to a main extension plane of the frame, and in that: • the mechanical-acoustic transducer further comprises at least two linearising springs (133a, 133b) each extending from one of the lateral coupling edges (132a, 132b) to a lateral edge of the rigid plate, which is located opposite, the linearising springs (133a, 133b) being configured so as to enable, during a deformation of the elastic strips (122a, 122b), a movement of at least some of the two lateral coupling edges (132a, 132b) to the central crossmember of the frame. • A frame, • An electromechanical transducer, and • A mechanical-acoustic transducer comprising a rigid plate, movably mounted in the frame, • the electromechanical transducer comprises at least two piezoelectric actuators (121a, 121b) and at least two elastic strips (122a, 122b), each piezoelectric actuator being associated with an elastic strip to induce, when it is electrically powered, a deformation of the elastic strip by bimetal effect, • the frame comprises a central crossmember from which extend, securely and opposite one another, the two elastic strips (122a, 122b), • the two elastic strips (122a, 122b) extend from the central crossmember of the frame until engaging two so-called coupling lateral edges (132a, 132b) of the mechanical-acoustic transducer, • the mechanical-acoustic transducer further comprises at least two linearising springs (133a, 133b) each extending from one of the lateral coupling edges (132a, 132b) to a lateral edge of the rigid plate, which is located opposite, the linearising springs (133a, 133b) being configured so as to enable, during a deformation of the elastic strips (122a, 122b), a movement of at least some of the two lateral coupling edges (132a, 132b) to the central crossmember of the frame.