Device for processing a signal, audio system, loudspeakers, acoustic resonator, and vehicle door, equipped for sound, associated therewith

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.