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muffle meaning:1. to make a sound quieter and less clear:2. to make something less strong or clear:3. to wear. Learn more. Research at UAMS shows transparent face shields Oct 04, 2020 · LITTLE ROCK -- New research at the University of Arkansas for Medical Sciences shows that while transparent masks and face shields aid in communication by restoring the visibility of the mouth Researchers claim masks muffle speech, but not enough to Sep 11, 2020 · Researchers claim masks muffle speech, but not enough to impede speech recognition cheek, forehead, and mouth. (The head-shaped loudspeaker, which
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