What does decibel mean?

Definitions for decibel
ˈdɛs əˌbɛl, -bəldeci·bel

Here are all the possible meanings and translations of the word decibel.

Princeton's WordNet

  1. decibel, dBnoun

    a logarithmic unit of sound intensity; 10 times the logarithm of the ratio of the sound intensity to some reference intensity


  1. decibelnoun

    A common measure of sound intensity that is one tenth of a bel on the logarithmic intensity scale. It is defined as dB = 10 * log(P /P ), where P and P are the relative powers of the sound.


  1. Decibel

    The decibel is a logarithmic unit that indicates the ratio of a physical quantity relative to a specified or implied reference level. A ratio in decibels is ten times the logarithm to base 10 of the ratio of two power quantities. A decibel is one tenth of a bel, a seldom-used unit named in honor of Alexander Graham Bell. The decibel is used for a wide variety of measurements in science and engineering, most prominently in acoustics, electronics, and control theory. In electronics, the gains of amplifiers, attenuation of signals, and signal-to-noise ratios are often expressed in decibels. The decibel confers a number of advantages, such as the ability to conveniently represent very large or small numbers, and the ability to carry out multiplication of ratios by simple addition and subtraction. A change in power ratio by a factor of 10 is a 10 dB change. A change in power ratio by a factor of two is approximately a 3 dB change. The decibel symbol is often qualified with a suffix that indicates which reference quantity or frequency weighting function has been used. For example, dBm indicates a reference level of one milliwatt, while dBu is referenced to approximately 0.775 volts RMS.

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  1. decibel

    Song lyrics by decibel -- Explore a large variety of song lyrics performed by decibel on the Lyrics.com website.

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How to pronounce decibel?

How to say decibel in sign language?


  1. Chaldean Numerology

    The numerical value of decibel in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of decibel in Pythagorean Numerology is: 4

Examples of decibel in a Sentence

  1. Jochen Hermann:

    We want the car to be as quiet as possible from the interior, but there are rules for sound decibel levels for the exterior, we picked an acoustic signal for the EQC about a year ago and made a choice between three different sounds.

  2. Matthew Terrell:

    People weren't wearing hearing protection, it's like being right next to a speaker at a rock concert, you can't yell over a 120-decibel megaphone.

  3. Mike Braun:

    I think yes it probably will make the dynamic different, i'm not going to deny it's going to change the decibel level and probably the intensity of which we go about talking about witnesses.

Images & Illustrations of decibel

  1. decibeldecibeldecibeldecibeldecibel

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    a state of irritation or annoyance
    • A. aberrate
    • B. descant
    • C. caddie
    • D. huff

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