Effects of speech duration and voice volume on the respiratory aerosol particle concentration.

ABSTRACT:

Background

SARS-CoV-2 (COVID-19) is transmitted via infectious respiratory particles. Infectious respiratory particles are released when an infected person breathes, coughs, or speaks. Several studies have measured respiratory particle concentrations through focusing on activities such as breathing, coughing, and short speech. However, few studies have investigated the effect of speech duration.

Methods

This study aimed to clarify the effects of speech duration and volume on the respiratory particle concentration. Study participants were requested to speak at three voice volumes across five speech durations, generating 15 speech patterns. Participants spoke inside a clean booth where particle concentrations and voice volumes were measured and analyzed during speech.

Resul

SUBMITTER: Takano T 

PROVIDER: S-EPMC11925707 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature