Patent ID: 8107660

Claim:
A hearing aid comprising: a sound collection unit configured to collect a surrounding sound; a sound output unit configured to output a sound; and a main body having a shape attachable to an ear, wherein the main body comprises: a hearing aid processing unit configured to perform hearing aid processing for the surrounding sound collected by the sound collection unit; an attaching determination unit configured to determine whether the main body is attached to the ear based on the surrounding sound; a specific sound generation unit configured to generate a predetermined signal; and a selection unit configured to select one of a sound subjected to the hearing aid processing by the hearing aid processing unit and a sound generated by the specific sound generation unit based on a determination result of the attaching determination unit, and to output the selected sound to the sound output unit, wherein the selection unit is configured to: select the sound generated by the specific sound generation unit, and output the sound to the sound output unit, until the attaching determination unit determines that the main body is attached to the ear since power of the main body has been turned on; and select the sound subjected to the hearing aid processing by the hearing aid processing unit, and output the selected sound to said sound output unit, after it is determined that the main body is attached to the ear.