Patent ID: 8638962
Filing Date: 2014-01-28
Classification: H04R

Abstract:
1. A method of reducing feedback in a hearing aid adapted to be worn by a user, the method comprising: receiving an audio input signal in an input transducer in the hearing aid; transforming the audio input signal into the frequency domain; dividing the audio input signal into a plurality of frequency bands; determining a threshold frequency above which a plurality of upper frequency bands lies, said threshold frequency defining a boundary between lower frequency bands and the upper frequency bands, wherein said threshold frequency is different in different listening situations; multiplying each of the plurality of upper frequency bands by a random phase, thereby obtaining a plurality of phase randomized upper frequency bands; synthesizing the plurality of phase randomized upper frequency bands and the lower frequency bands to an output signal; transforming the output signal into time-domain; and transmitting the output signal to an output transducer of the hearing aid.