| 摘要 |
<p>The invention relates to an array microphone with several individual microphones (1-4) connected with a signal processor (11) that for each individual microphone, comprises at least one digital filter, in particular for voice recognition.</p><p>The invention is characterized in that at least one loudspeaker (5) is provided, which is arranged in the acquisition area of each of the individual microphones (1-4), in that an electronic circuit is provided, which applies a signal to the loudspeaker (5) in such a manner that it emits a predetermined periodic noise signal, and in that the signal processor (11) evaluates the response signals coming from each of the microphones and/or from each of the digital filters as a response to the reception of the periodic noise signal.
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