A method for frequency distortion of an audio signal in a signal processing process in a hearing aid, wherein the audio signal is divided into a plurality of predetermined frequency bands (FB, FB1, FB2, FB3) by means of a filter bank, wherein each two directly adjacent frequency bands (FB1, FB2, FB3) are determining a band limit frequency (fL0-fL3), wherein signal components in the individual frequency bands (FB, FB1, FB2, FB3) are amplified in a frequency band-specific manner, wherein at first, a target frequency for a boundary between two frequency ranges with different distortion of the frequencies is determined on the basis of the audio signal, said target frequency being determined as a critical frequency which is given by an acoustic feedback (g) to be suppressed at the hearing aid, and wherein a first frequency band and a second frequency band lying directly above the first frequency band are determined on the basis of the target frequency, wherein the first frequency band is being determined as the frequency band with its upper band limit frequency being formed by the band limit frequency located directly below the target frequency, wherein to signal components in the first frequency band, it is applied a different distortion of the frequencies than to signal components in the second frequency band, thereby generating a frequency-distorted signal, and wherein the frequency band-specific amplification of the signal components in the individual frequency bands (FB, FB1, FB2, FB3) takes place between the splitting of the audio signal into the frequency bands (FB, FB1, FB2, FB3) and the respective distortion of the frequencies. wherein the audio signal is divided into a plurality of predetermined frequency bands (FB, FB1, FB2, FB3) by means of a filter bank, wherein each two directly adjacent frequency bands (FB1, FB2, FB3) are determining a band limit frequency (fL0-fL3), wherein signal components in the individual frequency bands (FB, FB1, FB2, FB3) are amplified in a frequency band-specific manner, wherein at first, a target frequency for a boundary between two frequency ranges with different distortion of the frequencies is determined on the basis of the audio signal, said target frequency being determined as a critical frequency which is given by an acoustic feedback (g) to be suppressed at the hearing aid, and wherein a first frequency band and a second frequency band lying directly above the first frequency band are determined on the basis of the target frequency, wherein the first frequency band is being determined as the frequency band with its upper band limit frequency being formed by the band limit frequency located directly below the target frequency, wherein to signal components in the first frequency band, it is applied a different distortion of the frequencies than to signal components in the second frequency band, thereby generating a frequency-distorted signal, and wherein the frequency band-specific amplification of the signal components in the individual frequency bands (FB, FB1, FB2, FB3) takes place between the splitting of the audio signal into the frequency bands (FB, FB1, FB2, FB3) and the respective distortion of the frequencies.