Patent ID: 9525950
Filing Date: 2016-12-20
CPC Classification: G10L,H04R

Claim Text:
1. method of processing a signal in a hearing aid, the method comprising the steps of: receiving an input signal from a microphone; splitting the input signal into a number of frequency bands; selecting a first gain vector comprising a set of first gain values to be applied in a corresponding set of frequency bands in order to alleviate a hearing loss of a hearing aid user; selecting a second gain vector comprising an initial set of second gain values to be applied in a corresponding set of frequency bands; determining a set of gradient elements of a speech intelligibility measure as a function of said second gain vector; determining a gradient modification term to be applied in respective frequency bands for optimizing listening comfort; applying said gradient modification term to said set of gradient elements, hereby providing a modified set of gradient elements; updating said set of second gain values by application of said modified gradient elements, in order to determine a new set of second gain values; determining whether to conduct further iterations, and in the affirmative reverting to the step of determining a set of gradient elements, and in the negative proceeding to the next step; modifying said first gain vector by application of the new set of second gain values; and processing the input signal in accordance with said modified first gain vector, hereby providing an output signal adapted for driving an output transducer.