That is a level in decibels and shows a ratio.
60 dB sound pressure level is about conversational speech listened in 1 meter distance.
70 dB is 10 times louder than 60 dB.
If you want to express large numbers of ratios with small values you will like the decibel. 1000 volts means 60 dB. The reference 0 dB = 1 volt. 0.001 volt means -60 dB.
60 dB: normal conversation 90 dB: lawnmower 120 dB: rock concert 150 dB: fireworks display
A 90 dB sound is 1,000 times more intense than a 60 dB sound. This is because the decibel scale is logarithmic, with every 10 dB increase representing a tenfold increase in intensity.
Half as loud in decibels is about a 10 dB decrease. For example, if a sound is initially at 70 dB, half as loud would be around 60 dB.
A normal conversation at 60 dB is 1,000 times more intense than a close whisper at 20 dB. This difference is due to the logarithmic nature of the dB scale, where each 10 dB increase represents a tenfold increase in intensity.
80 dB is 10 times louder than 70 dB, and 70 dB is 10 times louder than 60 dB, and so on. Therefore, 80 dB is 1000 times louder than 40 dB.
A sound at 90 dB measured at a distance of 100 meters will decrease by 60 dB due to the inverse square law. Therefore, at a distance of 100 meters, the sound will be around 30 dB.
A reduction of 20 dB corresponds to increasing the distance from the sourceby a factor of 10.So you have to back off to 150 meters in order to reduce the sound level to 60 dB.
Sound strength is measured in decibels (dB), with a normal conversation around 60 dB, a rock concert around 120 dB, and a jet engine around 140 dB. Prolonged exposure to sounds over 85 dB can damage hearing.
Leaves rustling produces about 10 dB of noise. A chainsaw, when one yard away is around 110 dB of noise. Normal human conversation is around 60 dB.