Definition, Meaning & Synonyms

db

noun

ˈdiːbiː

Definition

db is an abbreviation for decibel, a unit used to measure the intensity of sound or the power level of an electrical signal.

Examples

The sound of the train was measured at 90 db.
The audio engineer adjusted the levels to ensure the vocals were at 75 db.
Noise levels in the concert reached over 100 db, which can be harmful without hearing protection.

Meaning

DB is commonly used in contexts discussing audio levels, telecommunications, and electronics. It provides a logarithmic scale for measuring ratios, making it easier to express very large or small values.