The January Acoustics Bulletin, published by the Institute
of Acoustics, featured a study authored by Professor Peter Mapp into the
acoustic and communication effects of face masks. The study carried out in
Peter’s own electroacoustics laboratory during lock down, measured the sound
transmission properties of over 20 facemasks and found some surprising effects.
Clear masks and masks with clear panels, specifically designed to aid lip
reading, essential for the deaf and hard of hearing, were ironically found to
attenuate and distort speech the most.
Peter is now continuing the research and looking at both mechanical and
electroacoustic methods of improving speech transmission and has received
interest from several national hearing charities.
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