MATERIALS: Impact of face masks on voice radiation

Speaker directivities of a HEAD acoustics HMS II.3 head and mouth simulator wearing different mouth and nose covers in the SOFA format, as "GeneralFIR" convention, as described in [1]. [1] Poerschmann C., Luebeck T., & J.M. Arend (2020). "Impact of face masks on voice radiation". The Journal of the Acoustical Society of America 148(6) pp.3663-3670 (2020) ________________________________________________________________________________________________________ Name convention: Directivity_no_mask_ref: Reference measurement: HMS without a mask Directivity_mask1-6: all measured masks, according to the numeration below. All masks were measured two times indicated with "measurement2". Medical masks: 1) Disposable Triple Layer Filter Dustproof Earloop Non Woven medical mask, (brandname: Arvin, Protection Class DS3) Filtering facepiece respirators: 2) Three-dimensional respirator, Protection Class KN 95 (manufacturer: Suzhou Jinruida Protective Equipment Co, Inc.) 3) MB 21 - fine dust respirator, Protection Class FFP 2 (manufacturer: MB Filter Products AB, Sävedalen, Sweden) Cloth face coverings: 4) Microfibre scarf (manufacturer: Rose, material: 100\% polyester) 5) Cloth Face Covering (manufacturer: Modeatelier Scharn, Engelskirchen, Germany) 6) Hand-made cloth face covering: Double Layers cotton (manufacturer Stoffliebe, Gelsenkirchen, Germany) ________________________________________________________________________________________________________ Contact: Christoph Pörschmann, Tim Lübeck, and Johannes M. Arend TH Köln - University of Applied Sciences Institute of Communications Engineering Department of Acoustics and Audio Signal Processing Betzdorfer Str. 2, D-50679 Cologne, Germany https://www.th-koeln.de/personen/christoph.poerschmann/ https://www.th-koeln.de/personen/tim.luebeck/ https://www.th-koeln.de/personen/johannes.arend/