**1.** Sound is measured in units called ** Decibels** (dB)

Decibels, Db

**2.** Expressed as a formula, the intensity of a sound in ** Decibels** is 10 log 10 (S 1 /S 2), where S 1 and S 2 are the intensity of the two sounds; i.e

Decibels

**3.** A-weighted ** Decibels**, abbreviated dBA, are an expression of the relative loudness of sounds in air as perceived by our ears

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**4.** 33 rows · 101-125 dB: 110 ** Decibels** and above is the level where other sounds can not truly be heard

Db, Decibels

**5.** Most noise levels are given in dBA, which are ** Decibels** adjusted to reflect the ear's response to different frequencies of sound

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**6.** How ** Decibels** Apply to Music and Sound

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**7.** In music, ** Decibels** are a measurement of S ound P ressure L evel (SPL)

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**8.** In fact, for every 10 ** Decibels** of noise exposure, the intensity of the sound goes up 10 times

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**9.** At 85 ** Decibels**, the maximum recommended exposure time is 8 hours

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**10.** But by 100 ** Decibels**, the noise exposure limit drops to 15 minutes, and at 10

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**11.** Note: dBA = ** Decibels**, A weighted Decibel Level Comparison Chart Environmental Noise dBA Jet engine at 100’ 140 Pain Begins 125 Pneumatic chipper at ear 120 Chain saw at 3’ 110 Power mower 107 Subway train at 200’ 95 Walkman on 5/10 94 Level at which sustained exposure may result in …

Dba, Decibels, Decibel

**12.** Here L represents ** Decibels**, which correspond to an arbitrary sound wave of intensity I, measured in watts per square metre

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**13.** The reference intensity I 0, corresponding to a level of 0 ** Decibels**, is approximately the intensity of a wave of 1,000 hertz frequency at the threshold of hearing—about 10-12 watt per square metre.

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**14.** Hearing loss and long exposure to ** Decibels** over 100, 4

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**15.** Sound is measured in ** Decibels** (dB)

Decibels, Db

**16.** The problem with these sounds isn’t whether or not a microphone can capture 10 *Decibels*

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**17.** Remember that ** Decibels** measure a ratio

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**18.** ** Decibels** are the standard way that hams compare signal strength or characterize antenna gain, regardless of the number of zeros involved

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**19.** 43 ** Decibels (the** math) Avoiding the calculator

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**20.** Even though ** Decibels** are based on logarithms, you can do many calculations with

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**21.** Fifty ** Decibels** is the level of noise of a quiet conversation at home or a quiet stream

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**22.** In comparison, the general base of 70 ** Decibels** is the noise level of a vacuum cleaner or of radio and TV audio

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**23.** The sound of breathing is about 10 *Decibels*

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**24.** A motorcycle runs at 100 ** Decibels**.

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**25.** Sound levels are generally expressed in ** Decibels**, which are logarithmic and so cannot be manipulated without being converted back to a linear scale

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**26.** Recalculating for ** Decibels** rather than bels, we notice the same phenomenon

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**27.** (Figure below) Gain of amplifier stages in ** Decibels** is additive: 4.77 dB + 6.99 dB = 11.76 dB

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**28.** 60 ** Decibels** is a global, tech-enabled impact measurement company that brings speed and repeatability to social impact measurement and customer insights

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**29.** ** Decibels** (dB) are named in honor of Alexander Graham Bell, the inventor of both the telephone and the audiometer

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**30.** ** Decibels** are different from other familiar scales of measurement.

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**31.** As anything above 85-** Decibels** can severely affect your hearing, you must consider the array of benefits that come from noise monitoring equipment

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**32.** The replacements I have been looking at are rated from 52 to 54 *Decibels*

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**33.** Sound level meter or SPL meter is a device that measures the sound pressure level (SPL) of sound waves in ** Decibels** (dB-SPL) units.

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**34.** So this side gives you the number of ** Decibels** and we abbreviate decibel with a little d, capital B

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**35.** Somewhere reader just in volume because we're going to measure volume and *Decibels*

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**36.** Decibel Meter application uses the built-in microphone to determine the level of sound it detects, and displays this in ** Decibels** (dB) as max, average and peak sound pressure level

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**37.** 0 ** Decibels**, for example, is not "no sound" and is not the faintest possible sound

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**38.** ** Decibels** measure sound intensity

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**39.** Decibel range of human hearing in ** Decibels** n

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**40.** THE RELATIONSHIP OF VOLTAGE, LOUDNESS, POWER AND *Decibels*

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**41.** A TV emits 60 ** Decibels**, whilst the Airconco 3 Kw emits just 51 to 55

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**42.** The larger industrial air conditioning units such as the Airrex HSC-2500 Portable Air Conditioner emit up to 68 ** Decibels**, and the larger industrial fans such as the Blue Max 950 can emit between 70 and 82

Decibels, Depending

**43.** 60 ** Decibels** is a global, tech-enabled impact measurement company that brings speed and repeatability to social impact measurement and customer insights

Decibels

**44.** ** Decibels** are very useful for talking about increases (gains) or decreases (losses) without talking about the actual power or voltage levels

Decibels, Decreases

**45.** A-weighted ** Decibels**, abbreviated dBA, or dBa, or dB(a), are an expression of the relative loudness of sounds in air as perceived by the human ear

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**46.** In the A-weighted system, the decibel values of sounds at low frequencies are reduced, compared with unweighted ** Decibels**, in which no correction is made for audio frequency.

Decibel, Decibels

**47.** With ** Decibels**, if you think 80 dB is loud, 83 is twice as loud, and 86 is twice as loud as that! So when you go from a nice normal sound like, say, 50 dB, to …

Decibels, Db

**48.** The vertical y-axis is marked in linear divisions but using the logarithmic units of ** Decibels** allowing for a much greater range within the same distance

Divisions, Decibels, Distance

**DECIBELS** [ˈdesəˌbel, ˈdesəˌbəl]

NOUN

- 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.
- (in general use) a degree of loudness.

**Decibel definition**, a unit used to express the intensity of a sound wave, equal to 20 times the common logarithm of the ratio of the pressure produced by the sound wave to a reference pressure, usually 0.0002 microbar. See more.

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a power or field quantity to another on a **logarithmic scale**, the logarithmic quantity being called the power level or field level, respectively.

**DECIBEL** (**dB**) A unit of a logarithmic scale of power or intensity called the power level or intensity level. The **decibel** is defined as one tenth of a **bel** where one **bel** represents a **difference** in level **between** two intensities I 1, I 0 where one is ten times greater than the other.

Decibel (dB), **unit for expressing the ratio between two physical quantities**, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds. One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio.