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Updated: Jan 17, 2026
09:09
Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
Published on: September 27, 2024
813
Speaking Different Languages Impacts Size-Resolved Exhaled Breath Aerosol Particle Emission
Xinyue Li1, Chenyu Zhu1, Qisong Xing1
1State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
Environment & Health (Washington, D.C.)
|September 25, 2025
Summary
Speaking different languages affects exhaled aerosol particle emission. This linguistic influence on aerosol transmission may explain varied disease spread patterns in pandemics like COVID-19.
Area of Science:
- Environmental Health
- Aerosol Science
- Linguistics
Background:
- Aerosol transmission is crucial for airborne diseases.
- Observed COVID-19 transmission variations across language regions suggest a potential link.
- The influence of language on aerosol transmission remains poorly understood.
Purpose of the Study:
- To investigate the characteristics of exhaled aerosol emissions across different languages.
- To determine if language influences the quantity and size of exhaled aerosols.
- To assess the impact of language on aerosol transmission risk.
Main Methods:
- Recruited 51 multilingual volunteers for speaking tasks.
- Collected data on exhaled aerosol particle size and emission loads across three selected languages.
- Utilized machine learning (random forest regression) to analyze influencing factors.
Main Results:
- Exhaled aerosol particles during speech were predominantly below 1 μm.
- Significant discrepancies in emission loads and transmission risk were observed across languages.
- Language differences had a greater impact on aerosol emission concentrations than gender, but less than BMI.
Conclusions:
- Language usage demonstrably influences exhaled aerosol emission concentrations during speech.
- Linguistic-induced variations in aerosol transmission potential may contribute to pandemic spread patterns.
- Understanding these linguistic factors is vital for managing airborne disease transmission.
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