by Daniel Fink, MD, Chair, The Quiet Coalition
Silencity received a comment to my recent blog post about hearing protection asking if a noise alert system could be developed to let people know when they were encountering dangerous noise levels.
There are wall-mounted devices available, but I don’t know of any personal noise warning device, either for occupational use or for the public. Such a device or smartphone app would be nice but I don’t think it’s needed. Why?
For some time I have been ending posts with the line, “If it sounds too loud, it IS too loud.” And that advice is why one doesn’t need a noise alert system. If you think a noise is too loud, you’re probably right.
For sure, if a noise hurts your ears, even if it doesn’t bother someone else, it’s too loud for you. There are clearly variations in sensitivity to noise, but you need to protect your hearing, not someone else’s.
And if a noise exposure causes temporary ringing in the ears or muffling of hearing, that’s a definite sign that the noise was too loud.
For noise levels that aren’t quite that high, a simple and easy rule of thumb is that if you can’t carry on a conversation without straining to speak or to be heard, the ambient noise is above 70-75 A-weighted decibels.
And that’s why you don’t need a noise warning device. Depending on your belief system, God, Mother Nature, or Darwinian evolution already gave you one!