Sounds from 90 db and up can eventually damage hearing.
but 95db is equivalent to a subway train from 200 feet.
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.
Ballpark? 25 - 30 dB.
That's the sound of the Earth disintegrating.
About 132 dB(A)
The sound pressure of 45 dB is about a quiet library and 50 dB is about an everage home.
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.
Depending on the aircraft and type of engine, it will be around 140 DB.