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Earpiece and a method for playing a stereo and a mono signal

  • US 8,855,328 B2
  • Filed: 11/10/2009
  • Issued: 10/07/2014
  • Est. Priority Date: 11/10/2008
  • Status: Active Grant
First Claim
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1. A method for providing an audio signal to first and second ears of a user by using a single earpiece, the method comprising:

  • receiving an input signal that comprises a first input signal and a second input signal;

    wherein the first input signal the second input signal are desired signals and do not include ambient noise;

    injecting the first input signal to a bone conductor speaker of the single earpiece, wherein the single earpiece is positioned on the second ear of the user;

    outputting an output signal by the bone conductor speaker in response to the first input signal;

    wherein the outputting of the output signal causes an audio signal to reach the first ear of the user and causes a leakage signal to reach the second ear of the user;

    filtering the first input signal by an adaptive filter to provide a filtered signal that once played to the second ear of the user by an in-ear speaker of the single earpiece reduces an audio effect of the leakage signal on the second ear of the user;

    sending, to an in-ear speaker of the single earpiece, the filtered signal and the second input signal;

    providing an in-ear audio signal to the second ear of the user, by the in-ear speaker, in response to the filtered signal and the second input signal;

    sensing, by an in-ear microphone of the single earpiece, a sensed audio signal; and

    updating an impulse response of the adaptive filter in order to reduce a contribution of the leakage signal to the sensed audio signal.

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