For Decibel (dB) we have terms and definitions in 9 topics. The topics are Cellular, Computer Technology, DVD, DVD and CD, Home Theater, Import Cars, Music Technology, Technology and Video.

Decibel (Db) (Cellular)

A unit of measure used to express relative difference in power or intensity of sound.

Decibel (Db) (Computer Technology)

This is a logarithmic measure of sound intensity. It is equal to ten times the common logarithm of the ratio of sound intensity to a reference intensity. A rating of 85 dB is loud and prolonged exposure to those sound levels could damage hearing.

Decibel (Db) (DVD)

A unit of measurement expressing ratios using logarithmic scales related to human aural or visual perception. Many different measurements are based on a reference point of 0 dB; for example a standard level of sound or power.

Decibel (Db) (DVD and CD)

A unit of measurement expressing ratios using logarithmic scales related to human aural or visual perception. Many different measurements are based on a reference point of 0 dB; for example a standard level of sound or power.

Decibel (Db) (Home Theater)

A logarithmic measurement unit that describes a sound's relative loudness, though it can also be used to describe the relative difference between two power levels. A decibel is one tenth of a Bel. In sound, decibels generally measure a scale from 0 (the threshold of hearing) to 120-140 dB (the threshold of pain). A 3dB difference equates to a doubling of power. A 10dB difference is required to double the subjective volume. A 1dB difference over a broad frequency range is noticeable to most people, while a 0.2dB difference can affect the subjective impression of a sound.

Decibel (Db) (Import Cars)

A standard of measure for the relative loudness of a sound.

Decibel (Db) (Music Technology)

A logarithmic measure of sound pressure level, a "Decibel" is one tenth of a "Bel". To put this in human terms, someone with pretty good hearing will be able to pick up sounds from @ 0 - 10dB (a quiet room can be as much as 40dB), and will start to feel pain and possibly sustain hearing damage if they are exposed to levels in excess of 135dB for any length of time (The public address speakers of the kind used at very large concerts may realize this if they are running at their maximum).

Decibel (Db) (Technology)

measure of relative power level between two points in a circuit

Decibel (Db) (Video)

A unit of power measurement. A 6 dB rise in signal strength represents a 100-percent increase (or doubling) in power.

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