Category: Assistive Technologies

Assistive Technologies

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How Do Medical Masks Degrade Speech Reception?

This study shows that each type of medical mask essentially functions as a low-pass acoustic filter for speech, attenuating the high frequencies (2000-7000 Hz) spoken by the wearer by 3 to 4 dB for a simple medical mask and close to 12 dB for the N95 masks. In the era of Covid-19, Alexander Goldin, Barbara Weinstein, and Nimrod Shiman also explain how some of these problems might be overcome.

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