CPC H04R 19/04 (2013.01) [H04R 2201/003 (2013.01)] | 12 Claims |
1. A method comprising:
receiving an acoustic signal at a micro-electromechanical system (MEMS) microphone;
based on portions of the acoustic signal being determined to exceed a threshold signal level, generating output pulses; and
extracting information representative of a frequency of the acoustic signal based on respective spacing between rising edges of the output pulses.
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