„Verstehen mich mit der Maske noch alle?“

Schuster, Maria; Arias-Vergara, Tomás; Müller-Hörner, Rainer; Winterholler, Cordula

doi:10.1007/s15006-020-0749-4

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…99 Other potential side-effects of facemasks wearing include skin irritation, uncomfortable feeling due to the arrival of exhaled air into the eye, comprised quality and the volume of the speech during the conversations. 19,100,101 Moreover, there are some environmental concerns associated with the use of single-use facemasks. Some of these facemasks are made from layers of plastics, which may not bio-degrade easily, thus creating a massive burden on the environment.…”

Section: Impact Of Using Facemasks and Recent Designsmentioning

confidence: 99%

The perspective of fluid flow behavior of respiratory droplets and aerosols through the facemasks in context of SARS-CoV-2

Kumar

Lee

2020

Physics of Fluids

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In the unfortunate event of the current ongoing pandemic COVID-19, where vaccination development is still in the trial phase, several preventive control measures such as social distancing, hand-hygiene, and personal protective equipment have been recommended by health professionals and organizations. Among them, the safe wearing of facemasks has played a vital role in reducing the likelihood and severity of infectious respiratory disease transmission. The reported research in facemasks has covered many of their material types, fabrication techniques, mechanism characterization, and application aspects. However, in more recent times, the focus has shifted toward the theoretical investigations of fluid flow mechanisms involved in the virus-laden particles’ prevention by using facemasks. This exciting research domain aims to address the complex fluid transport that led to designing a facemask with a better performance. This Review discusses the recent updates on fluid flow dynamics through the facemasks. Key design aspects such as thermal comfort and flow resistance are discussed. Furthermore, the recent progress in the investigations on the efficacy of facemasks for the prevention of COVID-19 spread and the impact of wearing facemasks is presented.

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Section: Impact Of Using Facemasks and Recent Designsmentioning

confidence: 99%

The perspective of fluid flow behavior of respiratory droplets and aerosols through the facemasks in context of SARS-CoV-2

Kumar

Lee

2020

Physics of Fluids

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“…Even a little signal level attenuation, as expected with the use of face masks, would affect hearing in a noisy situation with SNRs close to the individual SRT. In hearing-impaired listeners, speech perception in noise would be more affected by face mask-related declines in sound pressure levels because of the reduced amplification by the outer hair cells, resulting in a smaller dynamic range [6,8,19,20]. In hearing-impaired individuals, speech perception in noise also is reduced to an increased pure-tone threshold in quiet [21,22], mainly attributable to a reduced cochlear amplifier function.…”

Section: Introductionmentioning

confidence: 99%

Influence of surgical and N95 face masks on speech perception and listening effort in noise

et al. 2021

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Daily-life conversation relies on speech perception in quiet and noise. Because of the COVID-19 pandemic, face masks have become mandatory in many situations. Acoustic attenuation of sound pressure by the mask tissue reduces speech perception ability, especially in noisy situations. Masks also can impede the process of speech comprehension by concealing the movements of the mouth, interfering with lip reading. In this prospective observational, cross-sectional study including 17 participants with normal hearing, we measured the influence of acoustic attenuation caused by medical face masks (mouth and nose protection) according to EN 14683 and of N95 masks according to EN 1149 (EN 14683) on the speech recognition threshold and listening effort in various types of background noise. Averaged over all noise signals, a surgical mask significantly reduced the speech perception threshold in noise was by 1.6 dB (95% confidence interval [CI], 1.0, 2.1) and an N95 mask reduced it significantly by 2.7 dB (95% CI, 2.2, 3.2). Use of a surgical mask did not significantly increase the 50% listening effort signal-to-noise ratio (increase of 0.58 dB; 95% CI, 0.4, 1.5), but use of an N95 mask did so significantly, by 2.2 dB (95% CI, 1.2, 3.1). In acoustic measures, mask tissue reduced amplitudes by up to 8 dB at frequencies above 1 kHz, whereas no reduction was observed below 1 kHz. We conclude that face masks reduce speech perception and increase listening effort in different noise signals. Together with additional interference because of impeded lip reading, the compound effect of face masks could have a relevant impact on daily life communication even in those with normal hearing.

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“…However, speech perception thresholds in noise were not yet performed in those conditions. In hearing impaired listeners, speech perception in noise would be more affected by reduced sound pressure levels caused by face masks 6,8,18,19 .…”

Section: Introductionmentioning

confidence: 99%

Influence of face surgical and N95 face masks on speech perception and listening effort in noise

Rahne

Fröhlich

Plontke

et al. 2021

Preprint

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Daily life conversation relies on speech perception in quiet and noise. Due to the COVID-19 pandemic, the usage of face masks has become mandatory in many situations. Acoustic attenuation of sound pressure by the mask tissue reduces speech perception ability especially in noisy situations. Mask also impede the process of speech information from sight of the moving mouth (lip reading). In a prospective exploratory experimental study including 17 normal hearing participants, speech perception in noise and listening effort were measured with and without a surgical mask or an N95 mask between the speech signal and the listener. Additionally, the influence of the masks on the acoustic frequency spectrum was measured. Averaged over all noise signals, speech perception threshold in noise was significantly reduced by 1.6 dB (95% CI[1.0, 2.1]) by a surgical mask and by 2.7 dB (95% CI[2.2, 3.2]) using an N95 mask. The 50%-listening effort signal-to-noise ratio was not significantly increased by 0.58 dB (95% CI[0.4, 1.5]) by a surgical mask but significantly increased by 2.2 dB (95% CI[1.2, 3.1]) using an N95 mask. In acoustic measures the amplitudes were reduced by the mask tissue by up to 8 dB at frequencies above 1 kHz while no reduction was observed below 1 kHz. We conclude that face masks reduce speech perception and increase listening effort in different noise signals. Together with an additional interference by missing lip reading the compound effect of face masks would have a relevant impact on daily life communication already in normal hearing subjects.

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„Verstehen mich mit der Maske noch alle?“

Abstract: In Arztpraxen nimmt der Infektionsschutz mittels Mund-Nasen-Maske momentan eine zentrale Rolle ein. Wenig nachgedacht wird dabei über die Folgen für die Kommunikation. Gerade schwerhörigen Patienten bereiten gedämpfte Stimmen und abgedeckte Lippen Probleme.

Cited by 4 publications

References 8 publications

The perspective of fluid flow behavior of respiratory droplets and aerosols through the facemasks in context of SARS-CoV-2

The perspective of fluid flow behavior of respiratory droplets and aerosols through the facemasks in context of SARS-CoV-2

Influence of surgical and N95 face masks on speech perception and listening effort in noise

Influence of face surgical and N95 face masks on speech perception and listening effort in noise

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