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Hearing protector fit-testing is a method that measures the degree of noise reduction obtained from an individual wearing a particular hearing protection device (HPD) - for example, a noise canceling earplug or earmuff. Fit testing is necessary due to the fact that noise attenuation varies across individuals.
The PAR is unique to the HPD tested and the individual wearing the protection, and personal fit testing US OSHA and the National Hearing Conservation Association (NHCA) Alliance recommend that employers conduct individual worker noise attenuation measurements (HPD fit-testing) as a best practice and valuable tool for improving employee training.
The Soundly team spends hundreds of hours per month researching and reviewing hearing aids. These are the best invisible hearing aids on the market. 7 Best Invisible Hearing Aids In 2025 - An ...
The Lexie B2 Plus is a self-fitting hearing aid, which means that the settings are programmed for your specific hearing needs using the app's built-in hearing test that helps you find the perfect ...
Key features: — Over-the-ear design rests on top of the ears — Bluetooth connectivity for phone calls and streaming audio — Battery charges in three hours for up to 18 hours of use
The United States Environmental Protection Agency (EPA) mandates that hearing protection is rated and labeled. To be rated, hearing protection is tested under ANSI S3.19-1974 to provide a range of attenuation values at each frequency that can then be used to calculate a Noise Reduction Rating (NRR).
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