Test results are then turned into ratings, so industry workers can see first hand how well a device reduces noise levels. That's an average noise level of 95 decibels calculated during an eight-hour day, Michael said. The noise level experienced from the front row of a rock concert might measure 130 decibels, Michael added. A protective device can cut those exposures to a safe level. Measuring noise levels in the work environment is tough.
Noise levels vary depending upon distance from the source.
Furthermore, people's sensitivity to noise also differs. Just wearing ear plugs or ear muffs doesn't guarantee against hearing loss, Michael said. That's why he's developed an earplug-fit testing device for checking whether protective devices are worn properly. That new product is part of Michael's strategy for growing the company. With a limited number of hearing device manufacturers requiring test services, growth has to come from new product development, he said.