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Development of a subjective loudness rating scale
W Williams1, E F Beach, M Gilliver
1National Acoustic Laboratories, Sydney, NSW, Australia. warwick.williams@nal.gov.au
International Journal of Audiology
|July 4, 2013
Summary
Subjective loudness ratings can estimate noise exposure. This method provides a convenient way to assess noise levels from past activities, aiding in noise-induced hearing loss prevention.
Area of Science:
- Occupational Health
- Audiology
- Environmental Health
Background:
- Previous studies established methods for measuring noise exposure through individual dosimetry.
- Further analysis is needed to explore simpler estimation techniques for noise levels.
Purpose of the Study:
- To determine if the effort required to converse in noise can estimate the experienced A-weighted noise level.
- To validate a subjective loudness rating as a tool for retrospective noise level estimation.
Main Methods:
- Analysis of dosimetry data from personal noise exposure meters worn by participants.
- Comparison of measured noise levels with subjective loudness ratings provided by participants during specific events.
- Inclusion of 42 volunteers (20 female, 22 male, aged 18-35) who maintained activity logs.
Main Results:
- A consistent relationship was observed between objectively measured noise levels and subjective loudness ratings across numerous events.
- The study found that subjective judgments align well with objective measurements for the group.
Conclusions:
- Subjective loudness rating is a practical method for retrospectively estimating noise exposure levels during individual activities.
- This approach offers a convenient tool for assessing past noise environments without requiring direct measurement.
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