Patent ID: 8271271

Claim:
A method for operating a hearing aid, the hearing aid comprising a digital signal processor having a gain function, the method comprising: receiving an input signal by the digital signal processor, modifying a cepstro-temporally smoothed gain function of the gain function resulting in a bias compensated spectral gain function based on the received input signal, the step of modification comprising: calculating an exponent of a bias correction value; multiplying the cepstro-temporally smoothed gain function with the exponent of the bias correction value using the equation {tilde over (G)} k ( l )= G k ( l )exp(κ G ), wherein the bias correction value is dependent on a smallest value of the gain function using the equation κ G ⁡ ( G min ) = log ⁡ ( 1 2 + 1 2 ⁢ G min 2 ) - G min + 1.