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  • How Do Medical Masks Degrade Speech Reception?

    Apr 01, 2020 · The data show that each type of medical mask in this study essentially functioned 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.

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  • The experts got it wrong on face masks spiked

    From early on, the general public have been advised by the World Health Organisation against wearing masks, on the basis that they provide limited protection. This has been echoed in the UK. In

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  • 15 Best N95 Mask Alternatives & Respirators (2020)

    May 12, 2020 · When you want to be prepared in the face of health emergencies or natural disasters, the best N95 mask or respirator will keep you breathing easy until the threat has passed.

  • Why Wearing a Face Mask Is Encouraged in Asia, but

    While wearing a mask in the face of the COVID 19 outbreak is second nature to people in parts of Asia, health experts in the West suggest otherwise

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  • For the deaf or hard of hearing, face masks pose new

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  • COVID 19, Face Masks And Why More Wisconsinites Are

    Apr 14, 2020 · At the same time, any protective impact of wearing face masks in public could easily be negated by their improper use, which is something Safdar worries a lot about. It only takes one sneeze or cough to potentially soil a cloth mask with infectious particles, meaning even a minor mask adjustment could risk contaminating a wearer's fingers and

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  • IATF orders mandatory face masks in public UNTV News

    According to IATF Spokesperson and Cabinet Secretary Karlo Nograles, improvised masks will do as long as the nose and mouth are covered every time a person comes out in public. Kung kailangan po nating lumabas ng bahay, kailangan pong mag mask [If we need to go out, we should wear masks], Nograles said in a briefing.