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Personal noise dosimeters: accuracy and reliability in varied settings
1Department of Music Education, University of Central Arkansas, Arkansas, USA.
Noise & Health
|June 24, 2014
Summary
Three personal noise dosimeters accurately measured sound levels in both controlled pink noise (PN) environments and real-world natural environments (NEs). All tested devices met American National Standard Institute (ANSI) accuracy standards for reliable hearing conservation and research applications.
Area of Science:
- Audiology
- Occupational Health
- Acoustics
Background:
- Personal noise dosimeters are crucial for assessing noise exposure in various settings.
- Understanding the accuracy and reliability of these devices is vital for effective hearing conservation programs.
- Previous research has highlighted the need for validation of personal noise dosimeters in diverse acoustic environments.
Purpose of the Study:
- To evaluate the accuracy, reliability, and characteristics of three brands of personal noise dosimeters.
- To compare dosimeter performance in controlled pink noise (PN) environments and natural environments (NEs).
- To determine if the dosimeters meet American National Standard Institute (ANSI) SI.25-1991 standards.
Main Methods:
- Quantitative, non-experimental correlation design.
- Tested three brands of personal noise dosimeters (Cirrus doseBadge, Quest Edge Eg5, Etymotic ER200D).
- Acquired decibel, Leq, and noise dose readings in PN environments and NEs (choir rehearsals, music student daily activities).
- Compared measurements against reference devices and between dosimeters.
Main Results:
- All dosimeters demonstrated very strong positive correlations for PN measurements.
- All devices were within the recommended ±2 dB(A) ANSI SI.25-1991 standard of reference measurements.
- Dosimeters also remained within ±2 dB(A) of each other in all tested conditions.
- Measurements during choir rehearsals showed a maximum difference of 1.5 dB(A) between dosimeters.
Conclusions:
- The tested personal noise dosimeters provide accurate and reliable Leq levels and noise dosages in both PN and natural settings.
- These devices are suitable for use in hearing conservation and research contexts.
- The Etymotic ER200D is highlighted as a potentially cost-effective option for music students and institutions.
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