Method to determine a feedback threshold in a hearing device
AssigneePhonak AG
InventorAndreas Von Buol
Life of this patent
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Abstract
A feedback threshold in a hearing device is determined by feeding an input signal to the hearing device while it is inserted in an ear canal of a user. The input signal results in a higher amplification than a supposed, that is, not yet known, feedback threshold. An amplification in the forward path of the device is measured. The feedback threshold is equal to the measured amplification.
Claims6
A method to determine a feedback threshold in a hearing device, the method comprising the steps of feeding an input signal to the hearing device inserted to an ear canal of a hearing device user, which input signal results in a higher amplification than the feedback threshold to be determined, measuring an amplification in the forward path of the hearing device, the measured amplification being equal to the feedback threshold, adjusting a course of amplification in function of the level of the input signal in the hearing device as follows:
- choosing a slope of −1 for a course of amplification represented double-logarithmically in a first phase, and choosing a slope less than −1 for a course of amplification represented double-logarithmically in a second phase.
Dependencies are inferred from the claim text.