Differentielt retningsmikrofonsystem og hørehjælpeapparat med sådant differentielt retningsmikrofonsystem

摘要

The system has two differential microphone stages with two differential directional microphones, respectively, where one of the differential microphone stages is downstream of the other differential microphone stage. The two differential microphone stages exhibit directional characteristics with zero points in two directions, respectively. One of the directions is oriented opposite to the other direction.