CPC H04R 1/1041 (2013.01) [H04R 29/00 (2013.01); H04R 2201/109 (2013.01); H04R 2400/01 (2013.01)] | 20 Claims |
1. A method for in-ear detection of an earbud, the method comprises:
transmitting, via a speaker of the earbud, a plurality of test signals associated with a plurality of frequency ranges, respectively;
sensing the plurality of test signals via a feedback microphone of the earbud;
determining, based on the sensed test signals, a plurality of spectrums associated with the plurality of frequency ranges, respectively;
determining a deviation of a first spectrum of the plurality of spectrums from a first reference out of ear spectrum;
determining a deviation of a second spectrum of the plurality of spectrums from a second reference out of ear spectrum; and
determining whether the earbud is located in a user's ear based at least in part on the deviation of the first spectrum from the first reference out of ear spectrum and the deviation of the second spectrum from the second reference out of ear spectrum, the earbud being determined to be located in the user's ear when the deviation of the first spectrum is greater than a first threshold and the deviation of the second spectrum is less than a second threshold.
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