DIGITAL HEARING AID

摘要

A digital hearing aid is provided to assist hearing ability of persons having difficulty in hearing by amplifying an external voice signal and outputting the amplified external voice signal. A digital hearing aid(100) includes a housing, a hearing execution unit, a sensing unit, a closing unit, and a control unit. The housing is installed in ears. A ventilation part(11) is formed in the housing in order to connect the inside of the ears with the outside of the ears. The hearing execution unit is installed at the housing in order to transform an external voice signal to a digital signal. The hearing execution unit transforms the transformed digital signal to the voice signal by using a signal processing algorithm. The sensing unit is coupled with the housing. The sensing unit is arranged at the outside of the ears. The sensing unit senses a reflecting material(1) for reflecting the traveling voice signal to the housing. The closing unit is operated to close the ventilation part when the sensing unit senses the reflecting material.