Is Noise Tolerance a Problem?
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Is Noise Tolerance a Problem?
Posted by Ken Knaszak on December 05, 2016
We have all experienced discomfort in noise. Sometimes it’s too loud, like a motorcycle or large speaker system; sometimes it’s annoying, like fingernails on a chalkboard. Either way, noise takes many forms and impacts each of us differently.
For instance, take the rumbling of a motorcycle engine. While some find it a nuisance, the motorcycle owner may have purchased that exact brand for the sound that it makes while cruising down the highway.
Most patients will respond to noise differently. Some are tolerant of noise, while others exhibit high sensitivity to noise. These patients who appear sensitive to noise are the ones that cringe at sharp impulsive sounds or feel the need to remove their hearing aids when driving in the car. It’s this particular, noise-sensitive, patient that has motivated some recent research efforts.
There is a research-based agreement that people who are more accepting of background noise (or “noise-tolerant”) tend to be more successful with their hearing aids while those who are “noise-sensitive” are less likely to find success1. This thought has led clinical audiologist to develop research projects that are focused on understanding if the benefit that one person receives from their hearing aids is linked to their individual noise tolerance.
Many have started to answer this question, in part by asking research participants about their willingness to tolerate background noise with a variety of noise-reducing technologies. Early findings suggest that noise-tolerant patients report mild benefits from the reduction of noise while noise-sensitive patients report the greatest benefits. Recall that these noise-sensitive patients are the ones that may be challenged to succeed with hearing aids.
Today, the best guidance for supporting the noise-sensitive patient would be through the selection of advance noise-reducing technologies (e.g., digital noise reduction or directional microphones) and the inclusion of a volume control either on the hearing aid or through a remote control.
Guided by ongoing research, tomorrow’s options may be different. If one could diagnose patients as noise-tolerant or noise-sensitive, it would be possible to identify patients that benefit most from aggressive strategies for improving noise acceptance. Once identified, a research-derived prescription would be selected, presenting a unique combination of hearing aid settings that assist the noise-sensitive patient toward a successful experience with hearing aids.
There’s no doubt that listening in noise is an immense challenge. For anyone with sensitivity to noise, this challenge may become an impasse to their acceptance of hearing aids. This opportunity to significantly improve a patient’s noise tolerance means their path to success could be one that’s short and easily navigated.
Nabelek, A.K., Freyaldenhoven, M.C., Tampas, J.W., Burchfield, S.B., & Muenchen, R.A. (2006). Acceptable noise level as a predictor of hearing aid use. Journal of the American Academy of Audiology, 17, 626-639.