Patent ID: 9363614
Filing Date: 2016-06-07
CPC Classification: H04R

Claim Text:
1. A method of fitting a hearing aid system for a hearing aid user comprising the steps of: obtaining an audiogram for the hearing aid user; presenting, for the hearing aid user, a first acoustical speech test signal, at a first signal-to-noise ratio, and prompting the hearing aid user to identify the contents of the first acoustical speech test signal, hereby providing a first measured intelligibility; calculating a first magnitude of a speech intelligibility index for the first acoustical speech test signal, taking into account the audiogram for the hearing aid user; determining an intelligibility for a normal hearing person, at said first magnitude of the speech intelligibility index, hereby providing a first norm intelligibility; determining a norm error based on the difference between the first measured intelligibility and the first norm intelligibility; classifying the measured intelligibility as belonging to a first hearing loss class in case the norm error is below a predetermined threshold; classifying the measured intelligibility as belonging to a second hearing loss class in case the norm error is above the predetermined threshold; and setting a gain, hearing aid feature or hearing aid parameter based on the result of said classification.