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## What are decibels for dummies?

By definition, a decibel—abbreviated dB—is a unit to measure the ratio of two power levels. More exactly, it is equal to ten times the ratio of two power levels, expressed on a logarithmic scale.

How do you explain decibels?

Decibels measure sound intensity Amplitude, reported on the decibel (dB) scale, measures its pressure or forcefulness. The more amplitude a sound has, the louder it is. The logarithmic decibel scale measures differently than a linear scale.

The decibel (dB) is a logarithmic unit used to measure sound level. It is also widely used in electronics, signals and communication. The dB is a logarithmic way of describing a ratio. The ratio may be power, sound pressure, voltage or intensity or several other things.

### Is 80 dB twice as loud as 40 dB explain?

The human ear is capable of hearing very quiet (low intensity) sounds and extremely loud (high intensity) sounds. In decibel terms, a doubling in loudness corresponds to roughly an increase in 10 dB. It doesn’t matter whether that increase is from 40 dB to 50 dB or 70 dB to 80 dB.

What does 85 dB sound like?

Topic Overview

Noise Average decibels (dB)
Normal conversation, background music 60
Office noise, inside car at 60 mph 70