Acoustic effects of medical, cloth, and transparent face masks on speech signals

Face masks muffle speech and make communication more difficult, especially for people with hearing loss. This study examines the acoustic attenuation caused by different face masks, including medical, cloth, and transparent masks, using a head-shaped loudspeaker and a live human talker. The results suggest that all masks attenuate frequencies above 1 kHz, that attenuation is greatest in front of the talker, and that there is substantial variation between mask types, especially cloth masks with different materials and weaves. Transparent masks have poor acoustic performance compared to both medical and cloth masks. Most masks have little effect on lapel microphones, suggesting that existing sound reinforcement and assistive listening systems may be effective for verbal communication with masks.

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1. 1.

   Atcherson, S. R., Finley, E. T., McDowell, B. R., and Watson, C. (2020 ). “ More speech degradations and considerations in the search for transparent face coverings during the COVID-19 pandemic,” Audiology Today, https://www.audiology.org/audiology-today-julyaugust-2020/online-feature-more-speech-degradations-and-considerations-search (Last viewed 9/30/2020).

   Not in our library

2. 2.

   Atcherson, S. R., Mendel, L. L., Baltimore, W. J., Patro, C., Lee, S., Pousson, M., and Spann, M. J. (2017 ). “ The effect of conventional and transparent surgical masks on speech understanding in individuals with and without hearing loss,” J. Am. Acad. Audiol. 28(1), 58–67.

   Not in our library10.3766/jaaa.15151 (opens in a new tab)

3. 3.

   Aydin, O., Emon, B., Cheng, S., Hong, L., Chamorro, L. P., and Saif, M. T. A. (2020 ). “ Performance of fabrics for home-made masks against spread of COVID-19 through droplets: A quantitative mechanistic study,” Extreme Mech. Lett. 40, 100924

   Not in our library10.1016/j.eml.2020.100924 (opens in a new tab)

4. 4.

   Chodosh, J., Weinstein, B. E., and Blustein, J. (2020 ). “ Face masks can be devastating for people with hearing loss,” BMJ 370, m2683

   Not in our library10.1136/bmj.m2683 (opens in a new tab)

5. 5.

   Goldin, A., Weinstein, B. E., and Shiman, N. (2020 ). “ How do medical masks degrade speech perception?,” Hear. Rev. 27(5), 8–9.

   Not in our library

6. 6.

   Konda, A., Prakash, A., Moss, G. A., Schmoldt, M., Grant, G. D., and Guha, S. (2020 ). “ Aerosol filtration efficiency of common fabrics used in respiratory cloth masks,” ACS Nano. 14(5), 6339–6347.

   Not in our library10.1021/acsnano.0c03252 (opens in a new tab)

7. 7.

   Llamas, C., Harrison, P., Donnelly, D., and Watt, D. (2008 ). “ Effects of different types of face coverings on speech acoustics and intelligibility,” York Papers Ling. Ser. 2(9), 80–104.

   Not in our library

8. 8.

   Mendel, L. L., Gardino, J. A., and Atcherson, S. R. (2008 ). “ Speech understanding using surgical masks: A problem in health care?,” J. Am. Acad. Audiol. 19(9), 686–695.

   Not in our library10.3766/jaaa.19.9.4 (opens in a new tab)

9. 9.

   Palmiero, A. J., Symons, D., Morgan, J. W. III, and Shaffer, R. E. (2016 ). “ Speech intelligibility assessment of protective facemasks and air-purifying respirators,” J. Occup. Environ. Hyg. 13(12), 960–968.

   Not in our library10.1080/15459624.2016.1200723 (opens in a new tab)

10. 10.

    Rudge, A. M., Sonneveldt, V., and Brookes, B. M. (2020 ). “ The effects of face coverings and remote microphone technology on speech perception in the classroom,” The Moog Center for Deaf Education White Paper (Moog Center for Deaf Education, St. Louis, MO).

    Not in our library

11. 11.

    Thomas, F., Allen, C., Butts, W., Rhoades, C., Brandon, C., and Handrahan, D. L. (2011 ). “ Does wearing a surgical facemask or N95-respirator impair radio communication?,” Air Med. J. 30(2), 97–102.

    Not in our library10.1016/j.amj.2010.12.007 (opens in a new tab)

12. 12.

    Tucci, D. (2020 ). “ Cloth face coverings and distancing pose communication challenges for many,” National Institute for Deafness and Other Communication Disorders, https://www.nidcd.nih.gov/about/nidcd-director-message/cloth-face-coverings-and-distancing-pose-communication-challenges-many (Last viewed 9/30/2020).

    Not in our library

13. 13.

    Wolfe, J., Smith, J., Neumann, S., Miller, S., Schafer, E. C., Birath, A. L., Childress, T., McNally, C., McNiece, C., Madell, J., Spangler, C., Caraway, T. H., and Jones, C. (2020 ). “ Optimizing communication in schools and other settings during COVID-19,” Hear. J. 73(9), 40–45.

    Not in our library10.1097/01.hj.0000717184.65906.b9 (opens in a new tab)

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