Apparatus and method for detecting earphone removal and insertion
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Nov 19, 2015
filing date -
Nov 24, 2014
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Abstract
At least one electrical value for a plurality of frequencies is measured over a range of frequencies. An impedance is calculated based upon the at least one electrical value for each of the plurality of frequencies in the frequency range, the calculating producing a plurality of impedances. A maximum impedance from the plurality of impedances and a frequency associated with the maximum impedance are determined. The frequency is compared to a predetermined threshold, and based upon the comparing it is determined whether an earphone has been removed from the ear of a wearer.
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