CPC H04B 17/309 (2015.01) [G10L 25/18 (2013.01); G10L 25/21 (2013.01); H04R 3/12 (2013.01); H04R 5/04 (2013.01); H04R 29/002 (2013.01); H04R 29/007 (2013.01)] | 17 Claims |
1. A method comprising:
receiving a voltage input and a current input associated with one or more audio signals;
bandpass filtering the voltage input and the current input;
determining a root means square of the bandpass filtered portion;
dividing the determined root means square of the voltage by the root means square of the current to identify an impedance value; and
determining whether a fault has occurred based on the impedance value;
wherein the voltage input is time delayed and clipped prior to the bandpass filtering.
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