Bernier, Antoine, and Jérémie Voix. “Signal Characterization of Occluded In-Ear Versus Free-Air Voice Pickup on Human Subjects”. Canadian Acoustics 38, no. 3 (September 1, 2010): 78–79. Accessed April 25, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2253.