Patent Document ID: 20150189450
Application ID: 14144474
Patent Flag: 0

Claim One:
1. A hearing aid comprising: a first input transducer for generating a first audio signal; a first feedback suppression circuit configured for modelling a first feedback path of the hearing aid; a first subtractor for subtracting a first output signal of the first feedback suppression circuit from the first audio signal to form a first feedback compensated audio signal; a hearing loss processor that is coupled to the first subtractor for processing the first feedback compensated audio signal to perform hearing loss compensation; and a receiver that is coupled to the hearing loss processor for providing a sound signal based on the processed first feedback compensated audio signal, wherein the first feedback suppression circuit comprises a first slow adaptive filter with an input coupled to the hearing loss processor, and an output, and a first fast adaptive filter with an input coupled to the first slow adaptive filter, and an output, wherein filter coefficients of the first slow adaptive filter are based at least in part on a difference between an output signal of the first slow adaptive filter and at least one of an output signal of the first fast adaptive filter and the first audio signal.