Patent ID: 8494194
Filing Date: 2013-07-23
Classification: H04R

Abstract:
1. A hearing aid comprising: a first microphone; a first A/D converter connected on an output side of the first microphone; a second microphone; a second A/D converter connected on an output side of the second microphone; a microphone sensitivity correction unit connected on an output side of the second A/D converter; a hearing assistance processing unit to which an output of the microphone sensitivity correction unit and an output of the first A/D converter are input; a microphone sensitivity correction value calculation unit to which the output of the first A/D converter and an output of the second A/D converter are input, and one output of which is connected to the microphone sensitivity correction unit; a storage unit connected to another output of the microphone sensitivity correction value calculation unit; a failure detection unit to which an output of the storage unit and a signal output from the another output of the microphone sensitivity correction value calculation unit are input; a sound output unit to which an output signal of the failure detection unit and an output signal of the hearing assistance processing unit are input; a D/A converter connected on an output side of the sound output unit; and a receiver connected on an output side of the D/A converter, wherein the microphone sensitivity correction value calculation unit comprises: