MATERIALS: Impact of face masks on voice radiation

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