The 1st and 2nd receiving sound microphone means which hearing aid null it is retired are laid out in order to execute manner and its

摘要

(57) Abstract Change with all the directional characteristics and directional characteristics of receiving sound quality of the hearing aid which has the 1st and 2nd microphone expedient (Fmic and Bmic) which it is segregated is arranged, attenuation and after administer time or the phase which are controlled to the signal which derives from the signal (X _front and X _back) from 1st and 2nd microphone expedient, the delay, forming the entire synthetic signal (Y), by supplying to the signal processor of the hearing aid execution the ru. Here, the entire synthetic signal (Y)with is decided. omni is adjustment possible attenuation control parameter of the range of 0omni1 desirably, T is the time delay which corresponds to the acoustic delay between 1st and 2nd microphone expedient. Change with shape of each desire of all the directional characteristics and directional characteristics, is executed result, phase anything related to hearing aid, without almost producing effect on time delay and amplitude characteristic, as smooth change.