Patent ID: 8571243
Filing Date: 2013-10-29
Classification: H04R

Abstract:
1. A method for suppressing a feedback whistle in a hearing aid device, comprising: predetermining a frequency range that is susceptible to the feedback whistle in the hearing aid device; receiving, by the hearing aid device, an input signal having a frequency spectrum including a spectral component in the frequency range susceptible to the feedback whistle in the hearing aid device; reducing the spectral component in the frequency range susceptible to the feedback whistle in the hearing aid device to generate a reduced spectral component of the input signal; generating, in a synthetic signal generator, a synthetic signal that is adapted to mix with the reduced spectral component of the input signal and the mixing with the reduced spectral component of the input signal arranged in the frequency range susceptible to the feedback whistle in the hearing aid device, wherein the generating of the synthetic signal, in the synthetic signal generator, further comprises: mixing, at the mixing stage, the reduced spectral component of the input signal with the generated and delivered synthetic signal to generate a mixed input signal, based on the established mixing ratio, so that a frequency spectrum of the mixed input signal substantially corresponds to the frequency spectrum of the input signal before the reduction of the spectral component of the input signal with a suppressed feedback whistle in the hearing aid device; processing the mixed input signal to generate an output signal; and outputting the output signal.