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Study reveals disposable surgical masks have best acoustic effect on speech

The team of researchers tested disposable surgical masks, masks with a clear plastic window around the mouth, medical masks, along with homemade and store-bought cloth masks which comprised of different fabric types and no. of layers.

https://ift.tt/eA8V8J from Hindustan Times - topnews https://ift.tt/3mPaf8I
The team of researchers tested disposable surgical masks, masks with a clear plastic window around the mouth, medical masks, along with homemade and store-bought cloth masks which comprised of different fabric types and no. of layers.