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A comment on Transport noise linked to increased risk of dementia, study finds. Parent comment

Re:Transport noise linked to increased risk of dementia, stu... by kmlx on Sunday September 12, 2021 @06:57AM (#28500043)
is 2-4db reduction under 30km/h “much lower”?
[ Parent | on HN ]
Re:Transport noise linked to increased risk of dementia, stu... by nitrogen on Sunday September 12, 2021 @08:52AM (#28500684)
3dB lower is 50% less power. It's a small perceptual difference, but a fairly sizable difference in absolute terms.
[ Parent | on HN ]