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Identifying hearing prosthesis actuator resonance peak(s)

  • US 9,729,981 B2
  • Filed: 05/12/2011
  • Issued: 08/08/2017
  • Est. Priority Date: 05/12/2011
  • Status: Active Grant
First Claim
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1. A method for identifying one or more resonance peaks of an actuator of an auditory prosthesis configured to deliver mechanical stimulation to a recipient, comprising:

  • applying a test voltage to the actuator at a plurality of frequencies over an operational frequency range of the actuator to cause actuation of the actuator;

    measuring at least one of a voltage across the actuator or a current through the actuator for each of the applied test voltages at the plurality of frequencies;

    analyzing the measured values to identify at least one resonance peak of the actuator;

    generating a driver signal based on the identified at least one resonance peak; and

    providing the driver signal based on the identified at least one resonance peak to the actuator thereby to cause a hearing percept by the recipient, whereinthe actuator is configured to move in a reciprocating manner to output vibrations to evoke a hearing percept by the auditory prosthesis, andmeasuring at least one of the voltage or the current comprises;

    at least one of;

    obtaining a signal from opposite sides of the actuator;

    orobtaining a signal from opposite sides of an electrical component in series with the actuator; and

    at least one of obtaining a difference of the signals from opposite sides of the actuator or obtaining a difference of the signals from opposite sides of the electrical component in measuring the voltage or current.

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