Extracting Electrical Network Frequency From Digital Recordings Using Frequency Demodulation

  • Luke Dosiek
  • Published 2015 in IEEE Signal Processing Letters

Abstract

Electric power system instantaneous frequency, also referred to as electrical network frequency (ENF), pollutes digital recordings due to a variety of factors (e.g., transformer hum). This unwanted interference has been used as a forensic tool in conjunction with a database of ground truth ENF measurements to determine the time at which a recording was made… (More)
DOI: 10.1109/LSP.2014.2368516

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