Digital hearing aid

DETAILED DESCRIPTION Therefore, it is an object of the present invention to provide a digital hearing aid which can output a voice easy to hear for a user.
According to the first aspect of the present invention, a digital hearing aid comprises: input means for converting an input sound into a digital data for generating an input data; analyzing means for analyzing the input data converted by the input means by a digital conversion and calculating an acoustic pressure at each frequency band; control means for inputting a result of calculation by the analyzing means; acoustic sense characteristics storage means for preliminarily storing acoustic sense characteristics of a deafness and a person having healthy acoustic sense from a fitting means; gain calculation data storage means for preliminarily storing an acoustic pressure range the easiest to hear for the deafness from the fitting means; acoustic sense compensating means for performing acoustic sense compensation process by amplifying the input data with a given gain; the control means calculating the gain of each frequency range on the basis of the acoustic sense characteristics and an acoustic pressure range stored in the acoustic sense characteristics storage means and the gain calculation data storage means.
In a second aspect of the present invention, the digital hearing aid may further comprise minimum acoustic pressure storage means for preliminarily storing a minimum acoustic pressure level from a fitting device, and the control means disables the acoustic sense compensating means to output the input data when the result of the analyzing means is lower than the minimum acoustic pressure level stored in the minimum acoustic pressure storage means.
In a third aspect of the present invention, the digital hearing aid may further comprise minimum acoustic pressure setting means for setting a minimum acoustic pressure by a user, and minimum acoustic pressure storage means for storing the set minimum acoustic pressure level, and the control means disables the acoustic sense compensating means to output the input data when the result of the analyzing means is lower than the minimum acoustic pressure level stored in the minimum acoustic pressure storage means