| 摘要 |
<p>An object of the invention is to provide a hearing aid that can make the user recognize a failure of a microphone of the hearing aid. A hearing aid includes: a first A/D converter 8a; a second A/D converter 8b; a microphone sensitivity correction unit 9 connected on an output side of the second A/D converter 8b; a hearing assistance processing unit 10 to which an output of the microphone sensitivity correction unit 9 and an output of the first A/D converter 8a are input; a microphone sensitivity correction value calculation unit 11 to which the output of the first A/D converter 8a and an output of the second A/D converter 8b are input, and one output of which is connected to the microphone sensitivity correction unit 9; a storage unit 12 connected to another output of the microphone sensitivity correction value calculation unit 11; a failure detection unit 13 to which an output of the storage unit 12 and a signal output from the another output of the microphone sensitivity correction value calculation unit 11 are input; a sound output unit 14 to which an output signal of the failure detection unit 13 and an output signal of the hearing assistance processing unit 10 are input; a D/A converter 15 connected on an output side of the sound output unit 14; and a receiver 7 connected on an output side of the D/A converter 15.</p> |
