# Definitions for decibelˈdɛs əˌbɛl, -bəldeci·bel

### Princeton's WordNet(0.00 / 0 votes)Rate this definition:

1. decibel, dBnoun

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

### Wiktionary(0.00 / 0 votes)Rate this definition:

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.

### Freebase(0.00 / 0 votes)Rate this definition:

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.

### Suggested Resources(0.00 / 0 votes)Rate this definition:

1. decibel

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

### Numerology

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. 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. 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. 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.

### Popularity rank by frequency of use

decibel#10000#58623#100000

## Translations for decibel

### From our Multilingual Translation Dictionary

• ديسيبل وحدة قياس
• decibel
• decibel
• Dezibel
• decibelio
• desibeli
• décibel
• decibelio, decibel
• जोर
• decibel
• decibel
• デシベル
• decibelas
• desibel
• decibel
• decibel
• decybel
• decibel
• decibeli, decibel
• децибе́л
• decibel
• desibel

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"decibel." Definitions.net. STANDS4 LLC, 2021. Web. 28 Nov. 2021. <https://www.definitions.net/definition/decibel>.

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