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Additional file 1 of Powered air-purifying respirators used during the SARS-CoV-2 pandemic significantly reduce speech perception
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posted on 2021-10-01, 03:37 authored by Roxanne Weiss, Leon Guchlerner, Tobias Weissgerber, Natalie Filmann, Birgit Haake, Kai Zacharowski, Timo Wolf, Sabine Wicker, Volkhard A. J. Kempf, Sandra Ciesek, Timo Stöver, Marc DiensthuberAdditional file 1: Supplemental Fig. S1. Dampening function (i.e. frequency response) of the surgical face mask (light grey) and the FFP3 respirator (black).
