The decibel scale is used to measure the loudness of sound.
It's a logarithmic scale.
It measures the loudness of sound.
The intensity of sound is measured in a unit called the decibel (dB), which describes the relative intensity of a sound based on an algorithmic decibel scale containing values ranging from 0 to 194. A zero value on the decibel scale represents the weakest sound audible to humans and sound intensity increases in correspondence with numeric values, the relationship among the values on the decibel scale is not linear but algorithmic. Here is an example of the decibel scale http://www.explainthatstuff.com/soundlevelmeters.html
Decibel scale.The scale used to define sound intensities is called the decibel scale system. The units used to measure the intensity of sound are referred to as decibels.
The decibel scale was originally used to quantify signal loss in a telephone circuit. The original unit, bel, was named in honor of Alexander Graham Bell. The decibel was devised by the Bell Telephone Laboratories in the 1920's.
The decibel scale, being logarithmic, is mathematically convenient for describing the wide range of sound intensities that are heard by the typical human ear.
The decibel is a logarithmic scale to express the intensity of sound. A shift of ten decibels upwards represents a tenfold increase in power.
Decibel (dB) * The Bel is the primary unit. However, the scale is too large. So for human hearing, we use the deciBel, where each deciBel is 1/10 of a Bel. this is abbreviated dB.