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

Claim 11:
12. 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, wherein said inverse model is provided by a wave digital five-port nonreciprocal scattering junction, said junction having:
A first port connected to a first series adaptor connecting a wave digital model of a resistor and a wave digital model of an inductor;
A second port connected to a second series adaptor connecting a wave digital model of a capacitor, a wave digital model of an inductor and a wave digital model of a resistor;
A third port connected to a first parallel adaptor connecting a wave digital model of a resistor and a series adaptor connecting a wave digital model of a capacitor and a wave digital model of a resistor;
A fourth port connected to a wave digital model of a resistor;
A fifth port connected to a wave digital model of a resistive voltage source.