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Ear terminal

DC
  • US 7,039,195 B1
  • Filed: 09/01/2000
  • Issued: 05/02/2006
  • Est. Priority Date: 09/01/2000
  • Status: Expired due to Term
First Claim
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1. An ear terminal comprising:

  • a sealing section (2) for arrangement in the meatus (3) of a human;

    a meatus-directed microphone (M2) having a sound inlet (T1) that opens to a closed space of the meatus;

    an electronics unit (11) coupled to the meatus-directed microphone (M2) to a power supply (12);

    an outer microphone (M1) for converting acoustic signals in the environment into electrical signals; and

    a meatus-directed sound generator (SG), wherein said electronics unit comprises analyzing means for generating a noise control signal for active canceling of acoustic noise signals in the meatus by generation of acoustic feedback using said meatus-directed sound generator (SG) based on acoustic signals converted by at least one of said meatus-directed microphone (M2) and said outer microphone (M1).

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