Patent ID: 9749756
Date: 2017-08-29
CPC Classifications: H04R

Claim:
1. A method of automatic switching between a first microphone mode and a second microphone mode in a binaural hearing aid, the binaural hearing aid comprising a processing unit, a first microphone system for provision of a first input signal, and a second microphone system for provision of a second input signal, where the first microphone system is configured for use by a first ear of a user, and the second microphone system is configured for use by a second ear of the user, the method comprising: obtaining modulations of the first input signal and the second input signal; determining a first evaluation index of speech intelligibility for the first input signal using a processing unit; determining a second evaluation index of speech intelligibility for the second input signal; determining whether one or more criterions are met by the first evaluation index of speech intelligibility and the second evaluation index of speech intelligibility; and setting one or both of the first microphone system and the second microphone system based on a result from the act of determining whether the one or more criterions are met by the first evaluation index of speech intelligibility and the second evaluation index of speech intelligibility, wherein the act of setting is performed by the binaural hearing aid; wherein the act of setting comprises setting one of the first microphone system and the second microphone system to the first microphone mode, and setting the other one of the first microphone system and the second microphone system to the second microphone mode, the second microphone mode being different from the first microphone mode.