Patent ID: 8565460

Claim:
A hearing aid device, comprising: first and second hearing aids worn on the left and right ears; and a controller connected by wire or wirelessly to the first and second hearing aids, wherein the first hearing aid includes: a first microphone; a first frequency band analyzer that splits sound collected by the first microphone into a plurality of frequency bands; a first gain controller that performs gain control on the frequency bands split by the first frequency band analyzer; a first frequency band synthesizer that is connected to the first gain controller; and a first speaker that is connected to the first frequency band synthesizer, the second hearing aid includes: a second microphone; a second frequency band analyzer that splits sound collected by the second microphone into a plurality of frequency bands; a second gain controller that performs gain control on the frequency bands split by the second frequency band analyzer; a second frequency band synthesizer that is connected to the second gain controller; and a second speaker that is connected to the second frequency band synthesizer, the second gain controller sets the gain with respect to a high tone frequency band split by the second frequency band analyzer to be higher than the gain with respect to a low tone frequency band, and makes the second hearing aid into a high tone frequency band-use hearing aid, and the controller compares the sound pressure of the high tone frequency band split by the second frequency band analyzer of the second hearing aid with the sound pressure of the high tone frequency band split by the first frequency band analyzer of the first hearing aid, and if the sound pressure of the high tone frequency band of the first hearing aid is higher by at least a specific amount than the sound pressure of the high tone frequency band of the second hearing aid, the sound pressure of the high tone frequency band of the second hearing aid is raised.