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Decibel - Wikipedia


An example scale showing power ratios x and amplitude ratios √x and dB equivalents 10 log10 x. The decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical ...

dB: What is a decibel? - Physclips. - UNSW


graph of dB scale. Definition and examples; Sound files to show the size of a decibel; Standard reference levels ("absolute" sound level); Logarithmic measures ...

What is a decibel, and how is it measured? | HowStuffWorks


The decibel scale measures sound based on human hearing, which makes it one of the most unusual scientific measurements.

Decibel Scale | Sound | Oscillations and mechanical waves ...


We often use this logarithmic scale to describe the intensity of sound.

Decibels - HyperPhysics


The decibel scale is a reflection of the logarithmic response of the human ear to ... The sound intensity in decibels above the standard threshold of hearing is ...

Decibel Scale - Physics Video by Brightstorm


The decibel scale is used to measure the intensity of sound waves. A wave with an intensity of 0 decibels is impossible to hear. Normal speech, on the other ...

The Decibel Scale: What Is a Decibel (dB)? Noise and Sound Units


A readable explanation of the decibel scale (dB scale), including dBA and dBC. Also phons and sones, noise units for measuring loudness.

Dangerous Decibels » How Loud is Too Loud?


Decibel Exposure Time Guidelines. Exposure Time Guidelines. Accepted standards for recommended permissible exposure time for continuous time weighted ...

Sound and Noise - Characteristics of Sound and the Decibel Scale


Loudness and the Decibel Scale. Another property of sound or noise is its loudness. A loud noise usually has a larger pressure variation and a weak one has ...

Decibel - Galen Carol Audio


Without getting too technical, the dB is a unit of measure for sound intensity or level. It is a logarithmic scale developed to express wide ranging quantities on a  ...