Is the decibel scale linear?

Decibels (dB) The ear has the remarkable ability to handle an enormous range of sound levels. In order to express levels of sound meaningfully in numbers that are more manageable, a logarithmic scale is used, rather than a linear one. This scale is the decibel scale. read more

Zero decibels (0 dB) is the quietest sound audible to a healthy human ear. read more

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale. It can be used to express a change in value (e.g., +1 dB or −1 dB) or an absolute value. read more

The purpose of the decibel scale is to make a nonlinear a system linear. From a technical point of view the measurement of audio is logarithmic. What this means is that the numbers used to describe those measurements will vary greatly based on the starting point. read more