Virtual Dictionary
Fractal Noise
Fractal noise is a key component in the generation of procedural textures. It allows the same texture to be called up and redrawn again and again. Fractal noise is used to imprint a greyscale noise or interference pattern onto a layer that is then applied to the texture to give a ?random grain?.
The noise will be both smooth and apparently random. However, because it is generated from a fractal, it can be precisely recreated each time it is used. If true random noise was used, a procedural texture would ripple and change unnaturally, in every update frame.
See Also Procedural Texture
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Why Recoil at Unpleasant Noise Occurs
Nails on a blackboard. It is an unbearable noise, one that sends shivers through anyone who hears it. But why does it do this, and more importantly, how can a virtual environment replicate the effect in any sound?
iPhone Based Hearing Aids
A novel and very practical use for an iPhone as an auxiliary hearing aid has been developed. The soundAMP program takes control of the iPhone, and essentially uses the in-built microphone to boost ambient noise levels.
Combating Noise and Distortion When Linking Aircraft to the wider Sensor Net
Commercial aircraft are a problem when it comes to linking them to the wider sensor net - all external electronic communication flows through a single part of the nose of the plane. This must be precision manufactured to be defect-free, or moisture and heat can tear the signal apart. How then, do you guarantee it is defect-free?
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(08/08/2010)
Graphene is a two-dimensional crystalline sheet of carbon atoms - meaning it is only one atom thick - through which electrons can race at nearly the speed of light - 100 times faster than they can move through silicon. This plus graphene's...
(17/08/2012)
A new model of background noise present in the nervous system could help better understand neuronal signalling delay in response to a stimulus.
Biomedical engineer Muhammet Uzuntarla from Bulent Ecevit University, Turkey, and...
(23/07/2009)
Ecological and economic factors are prompting telecommunications companies to deploy energy-saving systems. The broadband DSL access network consumes about 20 billion kilowatt-hours of energy per year worldwide ? equivalent to four percent ...
(09/03/2013)
A University of California, Riverside Bourns College of Engineering professor and a team of researchers published a paper today that show how they solved an almost century-old problem that could further help downscale the size of electronic...
(26/09/2007)
It is possible your computer could track your movements around the house by monitoring the electrical noise made by household appliances as you switch them on and off.
"The problem I see with a lot of ubiquitous computing re...
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