I came across this article on ny.eater.com which is about a new study involving restaurant goers who are being exposed to potentially dangerous sound levels in the local NY establishments. The finding states that one third of the 37 restaurants, bars, retailers, and gyms produced borderline dangerous sounds. The recorded sounds exceeded the legal limit workers are allowed to hear with unprotected ears. Employers are to provid ear protection if the workplace produces sounds of 85 decibels. Most restaurants were found to have noise levels reaching over 90 decibels.
A worthy 5 minute read:
Volume Reaches Dangerous Levels at NYC Restaurants
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?
.Plaster is a viable middle and high frequency absorber. We have used it many times in new builds that have…
Hi Dennis I'm curious what you think of acoustic perforated plaster - say CST Galaxy -on particularly ceilings in music…