Comment on Transport noise linked to increased risk of dementia, study findsparentComments−kmlx4yis 2-4db reduction under 30km/h “much lower”?−nitrogen4y3dB lower is 50% less power. It's a small perceptual difference, but a fairly sizable difference in absolute terms.
Comments
is 2-4db reduction under 30km/h “much lower”?
3dB lower is 50% less power. It's a small perceptual difference, but a fairly sizable difference in absolute terms.