Method and apparatus for suppressing an acoustic...

Details Method and apparatus for suppressing an acoustic... Method and apparatus for suppressing an acoustic...

2005-09-27

2005-09-27

Mei, Xu (Department: 2644)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S091000, C381S094100

Reexamination Certificate

active

06950528

ABSTRACT:
In order to suppress at least one interference signal in an incoming audio signal using a directional microphone system having at least two microphones, that directional microphone signal which has the lowest interference signal component is selected from two or more directional microphone signals that have been produced by weighted combination from the signals of the microphones, with the weighting in each case determining a direction-dependent sensitivity. If a sensitivity distribution has a minimum in the direction of the interference signal source, then a low signal energy is detected, which characterizes a lower interference signal component.

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