Definition, Meaning & Synonyms
decibel
noun
/ˈdɛs.ɪˌbɛl/
Definition
A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale.
Examples
- The quietest sounds that humans can hear are around 0 decibels.
- Normal conversation typically occurs at about 60 decibels.
- Noise levels above 85 decibels can damage hearing if sustained over time.
Meaning
In practical terms, a decibel represents a logarithmic measure of the ratio of a particular quantity (often power or intensity) to a reference level.
Synonyms
- Neper
- Bel
