Portable communication device and a method of processing signals therein

  • US 8,218,779 B2
  • Filed: 06/17/2009
  • Issued: 07/10/2012
  • Est. Priority Date: 06/17/2009
  • Status: Expired due to Fees
First Claim
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1. A portable communication device comprising:

  • a speaker adapted to be held to an ear of a user for conveying sound to the user;

    at least one sensor for sensing sound emanating from said sound conveyed to the user; and

    a control unit adapted to;

    estimate, based on an electrical input signal supplied to an input port of the speaker and an electrical output signal received from an output port of the at least one sensor, a transfer characteristic from the input port of the speaker to the output port of the sensor;

    estimate, based on the estimated transfer characteristic, a frequency at which the transfer characteristic exhibits a resonance peak; and

    estimate, based on the estimated frequency, a degree of sound leakage from the user'"'"'s ear.

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