Speaker output control
A loudspeaker and processor technology, applied to sensors, transducer circuits, sensor components, etc., can solve the problems that the model is no longer valid, the loudspeaker falls to the ground, and the displacement prediction of the diaphragm cannot be accurate, etc., to solve complex designs. , Noise robust effect
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[0028] The present invention provides a method of controlling the output of a loudspeaker, said method comprising deriving an admittance function over time from voice coil voltage and current signals (the admittance function is the reciprocal of the impedance function such that either can be derived, and can be obtained by a simple Operate the reciprocal function to make the two interchangeable). Combine the delta function, the force factor of the loudspeaker, and the blocking electrical impedance to derive the input voltage-to-displacement transfer function over time. The input voltage to offset transfer function over time is used to control the audio processing of the loudspeaker for loudspeaker protection and / or acoustic signal processing.
[0029] The present invention provides a modeling approach that is based on measurements of loudspeaker electrical impedance / admittance over time rather than complex parameter-based models. Apart from the measured impedance / admittance v...
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