Hearing aid device and hearing aid system with a directional microphone system and method for adjusting a directional microphone in a hearing aid

摘要

Hearing aid (HA, HA1, HA2) with a directional microphone system comprising at least - a first microphone (F; F1, F2) from which a first microphone signal (SF; SF1, SF2) emanates, - a second microphone (B; B1, B2 ), from which a second microphone signal (SB; SB1, SB2) emanates, - a delay unit (T), wherein the second microphone signal (SB; SB1, SB2) or a fourth microphone signal (SB3, SB4) originating therefrom is generated by means of the delay unit (T) is delayed by an internal time delay (Ti; Ti1, Ti2) and linked to the first microphone signal (SF; SF1, SF2) or to a resulting third microphone signal (SF3, SF4) for generating a directional microphone signal (SD), A cross-correlation analysis unit (K1, K2) into which the first (SF, SF1, SF2) or the third (SF3, SF4) microphone signal and the second (SB, SB1, SB2) or the fourth (SB3, SB4) microphone signal are received, for determining a value of cross-correlation of the two microns ofon signals (SF, SB; SF1, SB1, SF3, SB3, SF2, SB2, SF4, SB4); A control unit (C1, C2) for setting the time delay (Ti, Ti1, Ti2) as a function of the value of the cross-correlation of the two microphone signals (SF, SB, SF1, SB1, SF3, SB3, SF2, SB2, SF4, SB4) ; characterized by - a classifier (K) for determining an auditory situation in which the hearing aid device (HA; HA1, HA2) is currently located, wherein - the time delay (Ti; Ti1, Ti2) is adjusted as a function of the hearing situation.