Patent ID: 6687187
Filing Date: 2004-02-03
Classification: G01S,H04R

Abstract:
A method of controlling the directional characteristic of a hearing device comprising the steps of:detecting directional orientation of an acoustical source with respect to the hearing device; controlling the directional characteristic of the hearing device as a function of the directional orientation detected; providing a sensor configuration which has at least two electric outputs, said sensor configuration having transfer functions between an input on which acoustic signals impinge and said at least two outputs to generate electric signals on the outputs that are differently dependent on the directional orientation with which said acoustic signal impinges on said input and further defining a predetermined course of a ratio of said electric signals generated at two of said at least two outputs in dependency of said directional orientation; monitoring a ratio of momentarily prevailing electric signals at said two outputs and determining the directional orientation which includes correlating said monitored ratio of momentarily prevailing electric signals with said predetermined course of said ratio; and tailoring said transfer functions to be substantially of equal shape but phase-shifted by a predetermined spatial angle.