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From Nordan Symposia
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==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French ''fader'', from ''fade'' feeble, insipid, from Vulgar Latin ''fatidus'', alteration of [[Latin]] ''fatuus'' fatuous, insipid
*[http://en.wikipedia.org/wiki/14th_century 14th Century]
==Definitions==
*1: to lose freshness, [[strength]], or [[vitality]] : wither <fading flowers>
*2: to lose freshness or brilliance of [[color]]
*3: to sink away : vanish <a fading [[memory]]>
*4: to change [[gradually]] in loudness, [[strength]], or visibility —used of a motion-picture image or of an electronics [[signal]] and usually with in or out
*5:of an automobile brake : to lose braking power gradually
*6: to move back from the line of scrimmage —used of a quarterback
*7: of a ball or shot : to move in a slight to moderate slice
==Description==
In wireless communications, ''fading'' is deviation of the attenuation affecting a [[signal]] over certain propagation [[media]]. The fading may vary with [[time]], geographical [[position]] or [[radio]] [[frequency]], and is often modeled as a [[random]] process. A fading channel is a [[communication]] channel comprising fading. In wireless systems, fading may either be due to [http://en.wikipedia.org/wiki/Multipath_propagation multipath propagation], referred to as multipath induced fading, or due to [http://en.wikipedia.org/wiki/Shadow_fading shadowing] from [[obstacles]] affecting the [http://en.wikipedia.org/wiki/Wave_propagation wave propagation], sometimes referred to as shadow fading.
In audio engineering, a ''fade'' is a [[gradual]] increase or decrease in the level of an [[Sound|audio]] signal. The term can also be used for film cinematography or theatre lighting, in much the same way (see [http://en.wikipedia.org/wiki/Fade_(filmmaking) fade (filmmaking]) and [http://en.wikipedia.org/wiki/Fade_(lighting) fade (lighting))].
A recorded [[song]] may be gradually reduced to [[silence]] at its end (fade-out), or may gradually increase from silence at the beginning (fade-in). Fading-out can serve as a recording solution for pieces of [[music]] that contain no obvious ending.
Though [[relatively]] rare, [[songs]] can fade out, then fade back in. Some examples of this are "Helter Skelter" and "[http://en.wikipedia.org/wiki/Strawberry_Fields_Forever Strawberry Fields Forever]" by The Beatles, "Suspicious Minds" by Elvis Presley, and "Thank You" by Led Zeppelin.
The term fade is also used in multi-speaker audio systems to describe the balancing of power between front and rear channels.
[[Category: Physics]]
==Origin==
[http://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French ''fader'', from ''fade'' feeble, insipid, from Vulgar Latin ''fatidus'', alteration of [[Latin]] ''fatuus'' fatuous, insipid
*[http://en.wikipedia.org/wiki/14th_century 14th Century]
==Definitions==
*1: to lose freshness, [[strength]], or [[vitality]] : wither <fading flowers>
*2: to lose freshness or brilliance of [[color]]
*3: to sink away : vanish <a fading [[memory]]>
*4: to change [[gradually]] in loudness, [[strength]], or visibility —used of a motion-picture image or of an electronics [[signal]] and usually with in or out
*5:of an automobile brake : to lose braking power gradually
*6: to move back from the line of scrimmage —used of a quarterback
*7: of a ball or shot : to move in a slight to moderate slice
==Description==
In wireless communications, ''fading'' is deviation of the attenuation affecting a [[signal]] over certain propagation [[media]]. The fading may vary with [[time]], geographical [[position]] or [[radio]] [[frequency]], and is often modeled as a [[random]] process. A fading channel is a [[communication]] channel comprising fading. In wireless systems, fading may either be due to [http://en.wikipedia.org/wiki/Multipath_propagation multipath propagation], referred to as multipath induced fading, or due to [http://en.wikipedia.org/wiki/Shadow_fading shadowing] from [[obstacles]] affecting the [http://en.wikipedia.org/wiki/Wave_propagation wave propagation], sometimes referred to as shadow fading.
In audio engineering, a ''fade'' is a [[gradual]] increase or decrease in the level of an [[Sound|audio]] signal. The term can also be used for film cinematography or theatre lighting, in much the same way (see [http://en.wikipedia.org/wiki/Fade_(filmmaking) fade (filmmaking]) and [http://en.wikipedia.org/wiki/Fade_(lighting) fade (lighting))].
A recorded [[song]] may be gradually reduced to [[silence]] at its end (fade-out), or may gradually increase from silence at the beginning (fade-in). Fading-out can serve as a recording solution for pieces of [[music]] that contain no obvious ending.
Though [[relatively]] rare, [[songs]] can fade out, then fade back in. Some examples of this are "Helter Skelter" and "[http://en.wikipedia.org/wiki/Strawberry_Fields_Forever Strawberry Fields Forever]" by The Beatles, "Suspicious Minds" by Elvis Presley, and "Thank You" by Led Zeppelin.
The term fade is also used in multi-speaker audio systems to describe the balancing of power between front and rear channels.
[[Category: Physics]]
