Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
ENF; Quantification of the Magnetic Field
Authentication of digital recordings by tracing the electric network frequency (the ENF criterion) has shown promising results. This methodology is possible due to the presence of electromagnetic fields radiated from all kinds of electric equipment and connected power lines. In the ENF range - around the 50/60 Hz - the magnetic component is dominating. In this paper the results of magnetic field strength measurements carried out in different relevant environments are presented. Also presented are the results of an experiment performed in order to quantify the thresholds by which the magnetic fields leave traceable ENF in various battery powered digital audio/video recording equipment. In this experiment no battery powered digital recording device equipped with electret microphones were susceptible to the magnetic field.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.