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Sensor on moving component of transducer

  • US 10,142,754 B2
  • Filed: 02/21/2017
  • Issued: 11/27/2018
  • Est. Priority Date: 02/22/2016
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a transducer having a movable component;

    a sensor mounted on the movable component of the transducer;

    a processor; and

    memory storing computer instructions that, when executed by the processor, cause the processor to perform operations comprising;

    receive a signal from the sensor indicative of an acceleration of the movable component at a location where the sensor is mounted;

    determine a position of the movable component based on the acceleration at a first time;

    calculate a difference between the position of the movable component at the first time and a predicted position of the movable component at the first time to output a measure of distortion associated with the transducer, wherein the predicted position of the movable component at the first time is based on a model of displacement of the movable component, and wherein the predicted position of the movable component at the first time is different than a predicted position of the movable component at a second time, and wherein the predicted position of the movable component at the second time is based on the model of displacement of the movable component; and

    cause nonlinearities in audio output by the transducer to be reduced based on the measure of distortion.

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