Identifying hearing prosthesis actuator resonance peak(s)

A method for identifying one or more resonance peaks of an actuator of an auditory prosthesis configured to apply mechanical stimulation to a recipient, the method comprising:

• applying a voltage impulse to the actuator to cause actuation of the actuator;
• measuring an electrical phenomenon of the auditory prosthesis;
• analyzing the measured phenomenon to identify at least one resonance peak of the actuator;
• generating a signal using the identified at least one resonance peak;
• and
• providing the generated signal based on the at least one resonance peak to the actuator to cause actuation of the actuator to cause a hearing percept by the recipient, wherein
• at least one of:
• the actions of applying the voltage impulse, measuring the electrical phenomenon and analyzing the measured phenomenon and generating the signal and providing the generated signal are executed by the auditory prosthesis that is configured to do so;
• or
• the action of measuring an electrical phenomenon includes measuring the electrical phenomenon during a temporal period after the applied voltage impulse has been terminated, wherein the electrical phenomenon is a decaying oscillatory voltage signal.

An auditory prosthesis comprising:

• an actuator configured to apply mechanical stimulation to a recipient to cause a hearing percept by the recipient;
• a measurement circuit;
• and
• a control circuit configured to direct the auditory prosthesis to apply a voltage to the actuator at a plurality of frequencies over at least a part of the operational frequency range of the actuator;
• wherein the measurement circuit is configured to measure an electrical phenomenon of the auditory prosthesis for respective applied voltages at the plurality of frequencies;
• and
• wherein the control circuit is further configured to:
• analyze the measured phenomenon to identify at least one resonance peak of the actuator.

An auditory prosthesis comprising:

• an actuator configured to apply mechanical stimulation to a recipient to cause a hearing percept by the recipient;
• a measurement circuit configured to measure a phenomenon indicative of at least one of a voltage across the actuator or a current through the actuator;
• a control circuit configured to direct the prosthesis to apply a voltage impulse to the actuator;
• wherein the measurement circuit is configured to measure the phenomenon over a duration of time,
• wherein the control circuit is further configured to analyze the measured phenomenon to identify at least one resonance peak of the actuator, and
• wherein the control circuit is configured to use the identified at least one resonance peak in directing the auditory prosthesis to generate and provide a signal to the actuator to cause actuation of the actuator to cause a hearing percept by the recipient.