Abstract: An earpiece of an audio headset comprising a front wall, a loudspeaker equipped with a basket assembly and a cap, which are fixed on the front wall. The loudspeaker and the cap are removably fixed on the front wall by the reversible cooperation of mechanical means, located on the cap and on the basket assembly, with corresponding mechanical means located on the front wall. Said mechanical means of the basket assembly comprise at least one protuberance intended to cooperate with a deformable stub of the front wall, and said mechanical means of the cap comprise reception sites of fixing screws of the cap on the front wall, the cap pressing against the loudspeaker so as to guarantee the pressing of the basket assembly against the front wall.

Abstract: An earpiece of an audio headset comprising a front wall, a loudspeaker equipped with a basket assembly and a cap, which are fixed on the front wall. The loudspeaker and the cap are removably fixed on the front wall by the reversible cooperation of mechanical means, located on the cap and on the basket assembly, with corresponding mechanical means located on the front wall. Said mechanical means of the basket assembly comprise at least one protuberance intended to cooperate with a deformable stub of the front wall, and said mechanical means of the cap comprise reception sites of fixing screws of the cap on the front wall, the cap pressing against the loudspeaker so as to guarantee the pressing of the basket assembly against the front wall.

Abstract: The invention relates to a system for generating sound waves for at least two separate zones of a single space. The system includes, for each zone of said space: at least one array of high-frequency loudspeakers forming a directional sound wave; and at least one low-frequency loudspeaker. The system also comprises means for audio processing of the signals transmitted to the loudspeakers, which means control at least one loudspeaker to generate destructive sound waves in at least one zone of said space and to obtain distinct sound contents in said at least two distinct zones of said space. To do this, the audio-processing means control each low-frequency loudspeaker individually and each array of high-frequency loudspeaker mutually in order to generate the destructive sound waves.

Abstract: A device for processing an input signal for a loudspeaker is disclosed. The device includes a processing line with modules for estimating expected loudspeaker movements and generating an adaptive control signal by solving coupled differential equations representing both the loudspeaker and its acoustic environment. At least one transmission line provides a non-adaptive control signal from the input signal. An adder combines the adaptive and non-adaptive control signals to form the output signal. The device may use real-time feedback of loudspeaker parameters, such as voltage and current, to update the model dynamically. This approach reduces sound distortion while preserving user control over volume, making it especially suitable for compact or acoustically constrained environments, such as vehicle doors. The invention further relates to audio systems, loudspeakers, acoustic resonators, and vehicle doors incorporating such processing devices.

Abstract: The invention relates to an active noise-cancelling audio headphones having two circum-aural earpieces, comprising a partition designed to face an ear; said partition incorporating at least one vent passing through said partition so as to generate intentional leaks having a length greater than 1.5 mm and a width selected in such a way that there are either a ratio between said length and said width is less than or equal to 8:1 if a median section is greater than 1.7 mm2; or a ratio between said length and said width is less than or equal to 4:1 if said median section is less than 1.7 mm2.

Abstract: The invention relates to a high-performance audio amplifier intended to control at least one loudspeaker, the amplifier comprising a pre-amplification stage that receives an input signal, a power amplification stage connected to the pre-amplification stage and a feedback that delivers to the pre-amplification stage an image of the output signal, the power amplification stage comprising two power supply circuits comprising a MOSFET transistor. The invention is characterized in that it comprises: a sub-circuit for assisting with charging, a sub-circuit for assisting with discharging said MOSFET transistor, and a voltage-shifting sub-circuit.

Abstract: The invention relates to a high-performance audio amplifier intended to control at least one loudspeaker, the amplifier comprising a pre-amplification stage that receives an input signal, a power amplification stage connected to the pre-amplification stage and a feedback that delivers to the pre-amplification stage an image of the output signal, the power amplification stage comprising two power supply circuits comprising a MOSFET transistor. The invention is characterized in that it comprises: a sub-circuit for assisting with charging, a sub-circuit for assisting with discharging said MOSFET transistor, and a voltage-shifting sub-circuit.

Abstract: The invention relates to a system for generating sound waves for at least two separate zones of a single space. The system includes, for each zone of said space: at least one array of high-frequency loudspeakers forming a directional sound wave; and at least one low-frequency loudspeaker. The system also comprises means for audio processing of the signals transmitted to the loudspeakers, which means control at least one loudspeaker to generate destructive sound waves in at least one zone of said space and to obtain distinct sound contents in said at least two distinct zones of said space. To do this, the audio-processing means control each low-frequency loudspeaker individually and each array of high-frequency loudspeaker mutually in order to generate the destructive sound waves.

Abstract: AMENDMENT TO THE ABSTRACT The invention relates to an enclosure for diffusing sound by reverberation comprising:—a loudspeaker comprising a fixed frame, a cylindrical support and a membrane connected to an upper bearing surface of the frame; and—a wave guide mounted on the upper bearing surface, the wave guide being substantially in the form of a truncated pyramid with a long wall forming a front face, a short wall and lateral uprights; the wave guide comprising at least one acoustic wall fastened to the lateral uprights, the acoustic wall extending tangentially relative to the generatrix line of the cylindrical support closest to the front face.

Abstract: The invention relates to a broadband electrodynamic transducer for headphones, said transducer comprising: —a magnetic motor designed to generate a magnetic field; —a coil that is disposed in the air gap of the magnetic motor and can move translationally under the effect of the magnetic field; and —a membrane that is connected to the coil in such a way as to convert the translational movement of the coil into an acoustic wave; —the transducer comprising a self-supporting coil that is glued to the membrane, the membrane having a Young's modulus of more than 40 GPa.

Abstract: A circular acoustic membrane having an upper surface and an opposite lower surface, said membrane being intended to be coupled, at the lower surface thereof, to a mobile winding via a support. The membrane has an annular fold concentrically delimiting, in the membrane, a circular central portion and an annular peripheral portion. In addition, the central portion has a concavity turned towards the upper surface and the internal edge of the fold is carried by the lower surface and comprises an attachment surface intended for the coupling of said support of the coil.

Abstract: The invention relates to a broadband electrodynamic transducer for headphones, said transducer comprising:—a magnetic motor designed to generate a magnetic field;—a coil that is disposed in the air gap of the magnetic motor and can move translationally under the effect of the magnetic field; and—a membrane that is connected to the coil in such a way as to convert the translational movement of the coil into an acoustic wave;—the transducer comprising a self-supporting coil that is glued to the membrane, the membrane having a Young's modulus of more than 40 GPa.