43 dB is not so loud, when you don't want to sleep.
100 dB
L = 49 dB SPL (Sound pressure level) is a sound pressure of p = 0.005636766.The sensed loudness is a psycho acoustical quantity.
A avalanche can range from 100 dB to 180 dB
Legislation varies as to how load a horn may be. Check with your local authority
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.
normal conversation at 1 meter