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Active noise reduction in the proximity of a passenger seat

  • US 20050238179A1
  • Filed: 04/21/2005
  • Published: 10/27/2005
  • Est. Priority Date: 04/23/2004
  • Status: Abandoned Application
First Claim
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1. Device for active noise reduction in a proximity of a passenger seat in a passenger aircraft, in particular an aircraft with a jet engine, wherein the passenger seat has a head region, the device comprising:

  • at least one measurement microphone for arrangement in immediate vicinity of the head region of the passenger seat;

    a signal processing device;

    wherein a measurement signal generated by the at least one measurement microphone is input to the signal processing device;

    wherein the signal processing device generates a first output signal which is amplified and in counter-phase to the measurement signal;

    a reproduction device for arrangement in the vicinity of the head region of the passenger seat;

    wherein the first output signal is input to the reproduction device for driving the reproduction device;

    a monitoring microphone for arrangement in the vicinity of the head region of the passenger seat;

    wherein the monitoring microphone is adapted for generating a second output signal which is input to the signal processing device.

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