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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? - School of Physics


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.

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 ...

What is a decibel (dB)? - RapidTables.com


Decibel (dB) definition, how to convert, calculator and dB to ratio table. ... of one level vs. other level, or absolute logarithmic scale level for well known reference ...

The Decibel Scale, A Practical Understanding - Music Production


This audio program discusses the practical and application of the decibel scale in recording and music production work.

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 ...

Comparitive Examples of Noise Levels | Industrial Noise Control


Noise Source. Decibel Level. Decibel Effect. Jet take-off (at 25 meters) Recommended product: Outdoor Noise Barriers. 150. Eardrum rupture. Aircraft carrier ...

Intensity and the Decibel Scale - The Physics Classroom


Sound waves are introduced into a medium by the vibration of an object. For example, a vibrating guitar string forces surrounding air molecules to be ...

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Decibel (Loudness) Comparison Chart - Galen Carol Audio


Decibel (Loudness) Comparison Chart. Here are some interesting numbers, collected from a variety of sources, that help one to understand the volume levels of ...

Decibel Scale | Sound (video) | Khan Academy


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

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.