Apple Watch noise app test shows accuracy within 1%

Photo credit: This photo by Alex Binary has been dedicated into the public domain

by David M. Sykes, Vice Chair, The Quiet Coalition, and Daniel Fink, MD, Chair, The Quiet Coalition

According to this tech reviewer, an independent test of the new noise app on the Apple iWatchmeasured noise with 1% of a professional sound level meter, i.e., it measured 88 decibels when the professional meter measured showed 88.9 decibels. That’s pretty darn good!

But you don’t need the noise app on he iWatch, or any of the available smart phone sound meter apps that are available, to tell is a sound is too loud.

The World Health Organization recommends only one hour at 85 dBA to prevent hearing loss. If the ambient noise is loud enough that you have to strain to speak or to understand the person you’re speaking with, it’s above 75 A-weighted decibels* (dBA) and your hearing is in danger.

Because if something sounds too loud, it IS too loud.

*A-weighting adjusts the sound measurement for the frequencies heard in human speech.

David Sykes chairs several professional organizations in acoustical science: QCI Healthcare Acoustics Project, ANSI Committee S12-WG44, the Rothschild Foundation Task Force on Acoustics, and the FGI Acoustics Committee. He is lead author of “Sound & Vibration 2.0” (Springer, 2012), a contributor to the NAE’s “Technology for a Quieter America” and the GSA’s “Sound Matters,” and co-founded the Laboratory for Advanced Research in Acoustics at Rensselaer Polytech. A graduate of UC-Berkeley with advanced degrees from Cornell, he is a frequent organizer of professional conferences in the U.S., Europe, Asia and the Middle East.

Dr. Daniel Fink is a leading noise activist based in the Los Angeles area. He is the founding chair of The Quiet Coalition, an organization of science, health, and legal professionals concerned about the impacts of noise on health, environment, learning, productivity, and quality of life in America. Dr Fink also is the interim chair of Quiet Communities’ Health Advisory Council, and he served on the board of the American Tinnitus Association from 2015-2018.

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