The spread of breathing air from wind instruments and singers using schlieren techniques.
Indoor Air
; 31(6): 1798-1814, 2021 11.
Article
in English
| MEDLINE | ID: covidwho-1268113
Preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
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This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
ABSTRACT
The spread of breathing air when playing wind instruments and singing was investigated and visualized using two methods:
(1) schlieren imaging with a schlieren mirror and (2) background-oriented schlieren (BOS). These methods visualize airflow by visualizing density gradients in transparent media. The playing of professional woodwind and brass instrument players, as well as professional classical trained singers were investigated to estimate the spread distances of the breathing air. For a better comparison and consistent measurement series, a single high note, a single low note, and an extract of a musical piece were investigated. Additionally, anemometry was used to determine the velocity of the spreading breathing air and the extent to which it was quantifiable. The results showed that the ejected airflow from the examined instruments and singers did not exceed a spreading range of 1.2 m into the room. However, differences in the various instruments have to be considered to assess properly the spread of the breathing air. The findings discussed below help to estimate the risk of cross-infection for wind instrument players and singers and to develop efficacious safety precautions, which is essential during critical health periods such as the current COVID-19 pandemic.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Air Movements
/
Singing
Type of study:
Prognostic study
/
Randomized controlled trials
Limits:
Humans
Language:
English
Journal:
Indoor Air
Journal subject:
Environmental Health
Year:
2021
Document Type:
Article
Affiliation country:
Ina.12869
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