US Patent 11139767 Methods and apparatus for driving a transducer
Patent 11139767 was granted and assigned to Cirrus Logic on October, 2021 by the United States Patent and Trademark Office.
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According to embodiments described herein, there are provided methods and apparatus for providing a driving signal to a transducer, wherein the driving signal is output by an amplifier. A method comprises receiving an indication of a voltage and a current of the driving signal; based on an electrical model of the transducer and the voltage and the current of the driving signal, estimating an estimated electrical response of the transducer representative of movement of a mass in the transducer; comparing the estimated electrical response to a desired electrical response; and controlling the driving signal based on the comparison.
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