Patent ID: 11871203
Assignee: ELETTROMEDIA S.P.A.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of controlling a loudspeaker having an electromechanical force transducer and a diaphragm comprising the steps of:
providing a non-linear model (FT) configured to apply one or more desired conditions to a loudspeaker input digital audio signal;
providing an inverse non-linear electromechanical (FI) model of the force transducer configured to receive a signal processed by the non-linear model and to compensate, preferably linearize, at least one mechanical and/or electrical and/or electromechanical non-linearity of a transducer coil; and
converting the digital output signal of the electromechanical model into an analog signal for the force transducer,
wherein the output signal comprises a voltage signal representative of the displacement of the transducer to emit sounds by the action of the transducer on the diaphragm and at least said non-linear electromechanical inverse model is a digital wave filter (WDF) model to provide a directly computable function of the input signal for the transducer and,, the aforementioned non-linear electromechanical model includes parameters of the speaker belonging to an electrical domain, and to a mechanical domain, the electrical and mechanical domain being coupled through a first conversion factor based on a first current-controlled voltage generator and a second current-controlled voltage generator to relate an electromagnetic force applied to said moving mass with a counter-electromotive force generated in the coil by the movement of the mass.