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Electronic apparatus having microphones with controllable front-side gain and rear-side gain

  • US 8,300,845 B2
  • Filed: 06/23/2010
  • Issued: 10/30/2012
  • Est. Priority Date: 06/23/2010
  • Status: Active Grant
First Claim
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1. An electronic apparatus having a rear-side and a front-side, the electronic apparatus comprising:

  • a first microphone that generates a first signal;

    a second microphone that generates a second signal;

    a third microphone that generates a third signal;

    an automated balance controller that generates a balancing signal based on an imaging signal; and

    a processor, coupled to the first microphone, the second microphone, the third microphone, and the automated balance controller, that processes the first signal, the second signal, and the third signal to generate;

    a left-front-side beamformed audio signal having a first major lobe with a left-front-side gain,a right-front-side beamformed audio signal having a second major lobe with a right-front-side gain, anda third beamformed audio signal having a third rear-side gain,wherein an audio level difference between the third rear-side gain and both the right-front-side gain and the left-front-side gain is controlled based on the balancing signal.

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