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According to these guidelines, annual average night exposure should not exceed 40 decibels (dB), corresponding to the sound from a quiet street in a residential area. Persons exposed to higher levels over the year can suffer mild health effects, such as sleep disturbance and insomnia. Long-term average exposure to levels above 55 dB, similar to the noise from a busy street, can trigger elevated blood pressure and heart attacks.When they say "40 decibels (dB)", do they mean 40 dBA, 40 dBC, or 40 dBZ?
Edits: 02/04/17Follow Ups:
I've taken to wearing earplugs at night, even though there aren't any neighbors behind our house. Since I'm an audio guy, and a somewhat light sleeper, I'm sensitive to whatever sounds there may be during the night... the moron neighbor's dog coming out through the "doggy door" at 3 am to bark at the air, a distant train horn, the wind, etc. I can't help it - my brain is wired to listen for and analyze sound even when I don't want to. Earplugs make a big difference, and, they reduce my day-night average exposure level, which is also a good thing.:)
Edits: 02/08/17 02/08/17
dBA
40-45 dBA Leq (long term average indoors - bedroom are recommended levels.
Cicadas in July Windows open (with screens on) in the middle of Iowa 60dBA
My suburban family room right now with TV on quietly 40dBA
31dBA with TV off - refrigerator in kitchen 20 feet away is main contributor
"The hardest thing of all is to find a black cat in a dark room, especially if there is no cat" - Confucius
I'm not in the country but it's pretty quiet here in the suburbs at night while still being convenient to the city, freeway, grocery, malls, parks, hospital, etc.
All is peachy keen in our tree lined HOA subdivision with community pool, soccer Mom vans, and baby strollers being pushed around the sidewalks.
It's all very peaceful until the neighbor kid speeds up the street in his lowered trashcan muffler'd Honda Civic! Arrrgh!!
Oh well, I used to be one of those kids way back when.
I don't know what you're talking about. :) Seriously, though, by the time I left New York, I was seriously ready for a change. My current abode is a LOT quieter than the city was. I still have high blood pressure, though!
This is a public service announcement . . . WITH GUITARS!!!
I'm not a city dweller! I live in a rural setting who experiences the occasional rumble of a distant train at night along over the crickets.
I remember one business trip to Manhattan when I stayed at a Hampton on about the twentieth floor. The next day I needed to arise at oh-dark-thirty to give an early presentation. Around 11:00 PM, the dumpster guys woke the dead from the street below with their incessant banging.
Nice place to visit, but... :)
That's a problem with the building construction, with regard to sound isolation. There are several ways to avoid outside noise from being too intrusive. Poor windows and window framing are often the culprits, but walls and structural design can also be done either well or poorly. You should have made a complaint to corporate.:)
Edits: 02/08/17
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