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HPD Well-Fit

The HPD Well-Fit is a new NIOSH instrument developed to check the fit of a hearing protector device (HPD). If a hearing protector device is worn incorrectly or fit improperly, it seriously attenuates the amount of protection against loud noises. The HPD Well-Fit was designed to combat the problems of cost, time, and specialized equiptment typically associated with fit-testing. THe system is comprised of large sound-isolating headphones that fit over the ears, and a computer that both produces the sounds necessary to fit-test the worker, and shows instructional videos on improving the fit. This makes it possible to re-train a worker easily.