| 摘要 |
PROBLEM TO BE SOLVED: To provide a hearing aid capable of preventing hauling without enhancing the degree of sealing of ear holes. SOLUTION: In an insert unit 1L for the left ear, a signal inputted from a microphone 3L is divided to a straight signal inputting to an adder 8L in the same unit 1L from a head amplifier 4L through an attenuator 5L and a cross signal supplying to an inserting unit 1R at the opposite side of the unit 1L. The cross signal inputted from the unit 1R is added to the straight signal at the adder 8L so as to output from a speaker 10L. The cross signal that is an opposite side signal does not make hauling even enlarging the gain of it, so that a desired audio gain can be acquired. A sound image is located in the correct direction through an action of earlier effects of aural sense by delaying the cross signal almost several ms-several tens ms at a delay circuit 7L. |
