90 db
Ballpark? 25 - 30 dB.
dB is a measure of sound level. 140dB is extremely loud, loud enough to damage your hearing permanently and probably do other damage to your body.
An Atmoic Boom. (180.6Db) So, If You See One, Get Your Earmuffs Ready!
Decibel (dB) is a measurement of the noise level of sound.
100 dB
A avalanche can range from 100 dB to 180 dB
90 db
Since the db scale is relative, it depends on what 0 db means. Typically, however, 69 db is a very soft sound, almost a whisper.
That's the sound of the Earth disintegrating.
Ballpark? 25 - 30 dB.
About 132 dB(A)
The sound pressure of 45 dB is about a quiet library and 50 dB is about an everage home.
It is equivalent to the noise of the conversation of a group of 40 or so in a smallish restaurant. Such a level is dangerous for the hearing for more than four hours of exposure: either go outside for a break from time to time or wear earplugs.
normal conversation at 1 meter
43 dB is not so loud, when you don't want to sleep.
About 63 db. This can be calculated with logarithms. The rule is that every factor of 10 is an increase by 10 dB.