
Decibel - Wikipedia
The decibel may be defined by the statement that two amounts of power differ by 1 decibel when they are in the ratio of 10 0.1 and any two amounts of power differ by N decibels when they …
Decibel (dB) | Definition, Formula, & Facts | Britannica
Oct 31, 2025 · A decibel (dB) is a unit for expressing the ratio between two amounts of electric or acoustic power or for measuring the relative loudness of sounds.
What Are Decibels, and How Are They Measured? | HowStuffWorks
Sep 7, 2023 · Decibels (abbreviated dB) are the units used to measure the relative intensity of a sound. The decibel unit of measurement is a little odd because the human ear is incredibly …
DECIBEL Definition & Meaning - Merriam-Webster
Dec 8, 2016 · The unit for measuring the relative intensities of sound is called a decibel. Because the decibel scale is logarithmic, a sound with an intensity that is twice that of a reference …
What is a decibel (dB)? - RapidTables.com
Decibel (Symbol: dB) is a logarithmic unit that indicates ratio or gain. Decibel is used to indicate the level of acoustic waves and electronic signals. The logarithmic scale can describe very big …
Decibel - The Engineering ToolBox
The decibel is a logarithmic unit used to describe the ratio of a signal level - like power, intensity or amplitude - to a reference level. Decibel is a dimensionless value of relative ratios. The …
What is a decibel and what does it measure? - Healthy Hearing
Nov 6, 2024 · A decibel (dB) is a unit of measurement for sound levels, also known as amplitude or volume. It is measured on a logarithmic scale, increasing exponentially. Every increase of …
Decibels - HyperPhysics
The factor of 10 multiplying the logarithm makes it decibels instead of Bels, and is included because about 1 decibel is the just noticeable difference (JND) in sound intensity for the …
How To Understand The Unit Of Decibels (Simple explanation)
A decibel (dB) is a unit used to measure the intensity or power level of sound or signal. It represents the logarithmic ratio between the measured value and a reference value, typically …
Understanding the Decibel dB - Formula, Definition, Calculations
The deciBel is widely used for measuring sound intensity or sound pressure level. For this the sound is referred to a pressure of 0.0002 microbars which equates to the standard for the …