Abstract: An audio amplifier has an input for an audio signal being amplified and an output powering a load on the basis of the amplified audio signal; a generator of reference voltage of very high linearity and low output impedance, able to receive, as input, the audio signal to be amplified; a power current generator including a power voltage generator whose output is connected to the output of the reference voltage generator through a coupling inductance; and a signal adder introducing, for its control, as input to the power current generator, a signal representative of the current provided as output by the reference voltage generator. The signal adder is able to introduce a signal ( L ? di LOAD dt ) representative of the product of the value of the coupling inductance and the drift with respect to time of the current ( di LOAD dt ) provided to the load.

Abstract: Disclosed is the audio amplifier comprising an input for an audio signal to be amplified and an output for powering a load on the basis of the amplified audio signal; a generator of reference voltage of very high linearity and low output impedance, able to receive, as input, the audio signal to be amplified; a power current generator comprising a power voltage generator whose output is connected to the output of the reference voltage generator through a coupling impedance. The coupling impedance comprises two coupling inductances mounted in series between the output of the reference generator and the output of the power voltage generator and an attenuation impedance linking a mid-point between the two coupling inductances and a reference potential, wherein the attenuation impedance includes an attenuation inductance.

Abstract: Packaging for at least one object, preferably having a mass between 2 and 25 kg, comprising a body having at least two parts movable between a closed configuration defining a housing to receive the object, and an open configuration, in which the two parts are separated from one another to allow the object to be removed. The body defining, when closed, a lower face intended to rest on a surface in a bearing direction; and a member fixing the two parts together. The body also comprises a base supporting the object when open, the base defining at least one portion of the lower face of the body when closed. At least one of said parts of the body is situated away from the base when open to arrange direct access to the object in at least one access direction substantially perpendicular to the bearing direction allowing removal of the object.

Abstract: An assembly of electronic devices connected to a computer network comprises a digital data sender device comprising a short-range radioelectric main communication module and a secondary communication module, and a digital data receiver device comprising a short-range radioelectric main communication module and a secondary communication module. The assembly furthermore comprises a digital data transmitter device comprising a processor, a memory for storing the digital data, and a short-range radioelectric communication module able to communicate with the secondary module of the sender device when the transmitter device is in proximity to the sender device, and with the secondary module of the receiver device when the transmitter device is in proximity in the receiver device.

Abstract: The invention relates to a method implementing at least one loudspeaker comprising at least one module suitable for generating a value representative of an internal operation of the loudspeaker, and a memory unit for storing an alarm criterion relative to the generated value, and control software for controlling the loudspeaker. The method further comprising the steps of the module produces a value representative of the internal operation of the loudspeaker, the loudspeaker compares the generated value and the alarm criterion, and the loudspeaker emits a sound or visual signal if the result of the comparison indicates that the generated value fulfills the alarm criterion.

Abstract: Devices connected to a remote unit, each device storing at least one identifier of the device, and at least one configuration parameter representative of a configuration of the device, and a control set adapted for remotely controlling the devices, the control set comprising an interface. The method comprises selecting, by a user, any of the configuration parameters by the interface, detecting, by the control set, that the configuration parameter is selected and providing an identification parameter of the device corresponding to the configuration parameter.

Abstract: The invention relates to a support for an audio system, the audio system comprising a heat source, a discharge surface for the heat and means for conducting at least one portion of the heat produced by the heat source towards the discharge surface. The support further comprises a plate comprising at least one heat-conducting elastic member able to deform for fitting at least one portion of the discharge surface of the audio system, and a thermal dissipation radiator in thermal contact with the elastic member.

Abstract: A piece of sound reproduction equipment includes an input receiving an audio input signal to be reproduced; a loudspeaker with a resistance of less than 1?; a processing and amplification chain including: an amplifier able to energize the loudspeaker, a stage correcting the audio signal, positioned between the input and the amplifier, said correction stage is able to simulate virtual physical parameters of the loudspeaker by modifying the characteristics of the audio signal provided to the amplifier. The correction stage is able to modify the virtual physical parameters over time during operation of the sound reproduction system.

Abstract: This electroacoustic conversion chain comprising at least one loudspeaker, this loudspeaker comprising means for generating a magnetic field in a magnetic circuit having an air gap and a membrane secured to turns of a conducting material which may move in this air gap, is characterized in that it comprises at least one control module comprising at least one input for conveying a signal to be broadcast and at least one output connected to a turn, the control module being able to apply to said or each output an excitation signal depending on the position of at least one turn relatively to the air gap.

Abstract: The invention relates to a “push-pull” amplifier, comprising an input (12) and an output (14), which includes: a main amplification branch comprising two amplification transistors (18, 20) connected in opposite series between two supply voltages (V+, V?), the amplifier output (14) being connected between the two transistors (18, 20), and a control circuit (22, 24) for each amplification transistor (18, 20) connected to the input (12) to each receive as an input the signal to be amplified. The main amplification branch comprises, between each transistor (18, 20) and the output (14), a member having a nonlinear response (38, 40) and means (30, 32) for introducing at the input of the control circuit (22, 24) of each transistor (18, 20), a nonlinear compensating signal suitable for bringing about the circulation of a minimum current in the member having a nonlinear response (38, 40).

Abstract: The switched power supply (10) comprises: an input (16) for an AC input current (IPRI) under an input voltage (VPRI); an output (36) for a DC output current (Isec), and successively, from the input to the output, a system of controlled breaker switches (20); a transformer (21) whereof the primary (24) is linked at the output of the system of controlled breaker switches (20); a rectifying circuit (28) connected across the terminals of a secondary circuit (26) of the transformer; and a storage capacitor (32) linked in parallel across the output terminals of the rectifier circuit (28) with interposition of a coil (34), the output (36) being formed across the terminals of the storage capacitor (32).

Abstract: A current-voltage converter with a current reflector, for which the input current includes a fixed component and a variable component, includes an input for the current to be converted, an output for the converted voltage, two constant current sources each connected between the output and a respective reference voltage, at least one MOSFET transistor mounted in series with each constant current source, and a resistor for converting the current into a voltage, arranged between the output and ground. The gate of each MOSFET transistor is connected to one of the reference voltages. The input for the current to be converted is connected to the output through one of the MOSFET transistors. The converted further includes, for each MOSFET transistor, means for re-injecting into at least one of the current sources, a current equal to the current absorbed in the gates of the MOSFET transistors.

Abstract: The invention relates to an audio processing device (1) including: at least one connector (2, 7), suitable for receiving data defining an input sound signal; a processing module (5, 6) suitable for determining at least one signal intended for a loudspeaker (12, 13) as a function of said defining data, a communication module (8, 9) for communicating with at least one other audio processing device, according to claim 1; said device being characterized in that it furthermore includes a detection module (4) suitable for detecting the proximity of another device according to claim 1 and in that the processing module is suitable for determining said signal intended for the loudspeaker as a function furthermore of a number of other detected device(s).

Abstract: The invention relates to a “push-pull” amplifier, comprising an input (12) and an output (14), which includes: a main amplification branch comprising two amplification transistors (18, 20) connected in opposite series between two supply voltages (V+, V?), the amplifier output (14) being connected between the two transistors (18, 20), and a control circuit (22, 24) for each amplification transistor (18, 20) connected to the input (12) to each receive as an input the signal to be amplified. The main amplification branch comprises, between each transistor (18, 20) and the output (14), a member having a nonlinear response (38, 40) and means (30, 32) for introducing at the input of the control circuit (22, 24) of each transistor (18, 20), a nonlinear compensating signal suitable for bringing about the circulation of a minimum current in the member having a nonlinear response (38, 40).