That's the sound of the Earth disintegrating.
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.
Given: Sound intensity level LI = 150 dB. Reference sound intensity Io = 10^−12 W/m² (Threshold of hearing) Reference sound intensity level LIo = 0 dB-SIL (Threshold of hearing level) Get sound intensity I when entering sound intensity level LI = 150 dB: I = Io×10^(LI/10) in W/m² = 10^−12×10^(150/10) = 1000 W/m².
'decibel' means power level compared to something else. +36 dB = 3,981 times as much power as whatever it's compared to.
dBm us almost exactly the same as dB. The only difference is that there is a reference of 1 Watt = 0 dB, and 1 mW = 0 dBm. dBm is defined as power ratio in decibel (dB) referenced to one milliwatt (mW). It is an abbreviation for dB with respect to 1 mW and the "m" in dBm stands for milliwatt. dBm is different from dB. dBm represents absolute power, whereas in audio engineering the decibel is usually a voltage ratio of two values and is used then to represent gain or attenuation of an audio amplifier, or an audio damping pad. PdBm = 10*log10(1000*10W) = 40dBm
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.
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.
Sounds from 90 db and up can eventually damage hearing. but 95db is equivalent to a subway train from 200 feet.
Depending on the aircraft and type of engine, it will be around 140 DB.