News tagged with distortions
Distorting the lens
(PhysOrg.com) -- One of the most bizarre predictions of Einstein's Theory of General Relativity is the existence of back holes, objects that are so dense that not even light can escape from their gravitational ...
Feb 09, 2012 |
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First implementation of 100 and 40Gbps ultra-high-speed plug-and-play optical communications
Nippon Telegraph and Telephone Corporation and NTT Communications Corporation have conducted 100 and 40Gbps transmission tests in real field environments using existing installed optical fiber, and have demonstrated ...
Nov 24, 2011 |
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Fujitsu develops high-performance distortion-compensation circuit
Fujitsu announced their development of a digital signal processing algorithm to compensate for waveform distortions in signals transmitted by fiber-optic cables in long-haul transmission systems of 100 km ...
Sep 29, 2011 |
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World Wars camouflage technique could have benefits in modern warfare
Painting army vehicles with high contrast geometric patterns - 'dazzle camouflage' - affects the perception of their speed and thus could make them less susceptible to rocket propelled grenade attacks, according to new research ...
Jun 01, 2011 |
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Physicists describe how to make time-reversed light pulses
(PhysOrg.com) -- By taking advantage of the properties of periodic systems, physicists have described how to efficiently time-reverse ultrashort electromagnetic pulses. Since a time-reversed pulse evolves ...
May 31, 2011 |
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To better understand the early universe, adaptive optics technique invented
Adaptive optics makes it possible to remove distortions caused by turbulence in the atmosphere when observing the sky. A major innovation in this field has been achieved by a Franco-British team, including ...
Jan 17, 2011 |
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New laser technology brings perfect focus to medical advances
(PhysOrg.com) -- Researchers at the University of St Andrews' School of Physics and Astronomy have developed a new laser imaging technique that overcomes visual distortions and promises advances in deep tissue ...
May 14, 2010 |
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Researchers rest their case: TV consumption predicts opinions about criminal justice system
People who watch forensic and crime dramas on TV are more likely than non-viewers to have a distorted perception of America's criminal justice system, according to new research from Purdue University.
Other Sciences / Social Sciences
Oct 28, 2009 |
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Planet Imager will enable telescopes to image extrasolar planets directly
The best way to observe objects in solar systems is simply to look -- but distortions caused by Earth's atmosphere drown out much of the spectacle of space. To address this problem, Berkeley astronomer James ...
Sep 29, 2009 |
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Synthetic gene circuit allows precise dosing of gene expression
Researchers have crafted a gene circuit that permits precise tuning of a gene's expression in a cell, an advance that should allow for more accurate analysis of the gene's role in normal and abnormal cellular function.
Mar 10, 2009 |
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Distortion
A distortion is the alteration of the original shape (or other characteristic) of an object, image, sound, waveform or other form of information or representation. Distortion is usually unwanted, and often many methods are employed to minimize it in practice. In some fields, however, distortion may be desirable; such is the case with electric guitar distortion.
The addition of noise or other extraneous signals (hum, interference) is not considered to be distortion, though the effects of quantization distortion are sometimes considered noise. A quality measure that explicitly reflects both the noise and the distortion is the Signal-to-noise-and-distortion (SINAD) ratio.
For more information about Distortion, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
