Sentences with phrase «recommended noise limit»

Overall, they found that, at maximum volume, every one of the noise machines placed within 3 1/4 feet of infants» ears were capable of producing sounds that exposed the babies to more than 50 A-weighted decibels, what the study describes as «the current recommended noise limit for infants in hospital nurseries.»

Well, I was curious about this «recommended noise limit,» so I did some digging — and it turns out that the limit, recommended in 1999 by the National Resource Center, has nothing to do with protecting infants» hearing.

Not exact matches

KM: Sure, so we found that the noise levels coming from the other classes in the open - plan classrooms were excessive and well above the recommended limits.

Cons: Large turning radius, limited cargo space, expensive to maintain, recommended premium fuel, depreciates fast Common problems: In early models, a bad timing chain tensioner can cause a rattling noise when the engine is started and the Check Engine light.

In 2011, the Michigan Wind Working Group Technical and Health Committee recommended lowering the state's old turbine noise limits from 55dBa to 40dBa.