mosquito noise


Also found in: Dictionary, Thesaurus, Medical.

mosquito noise

A distortion that appears near crisp edges of objects in MPEG and other video frames that are compressed with the discrete cosine transform (DCT). It occurs at decompression when the decoding engine has to approximate the discarded data by inverting the transform model. The mosquito noise appears as random aliasing in these areas and requires sophisticated detection circuits to eliminate it. As TVs get larger, mosquito noise and other artifacts become more noticeable. See artifact. See also Mosquitotone.


Before and After
The mosquito noise on the left is removed with Algolith's Home Theater 3D Mosquito Noise Reducer appliance. The image is enlarged to show more detail. (Image courtesy of Algolith inc., www.algolith.com)
Mentioned in ?
References in periodicals archive ?
Total quantity or scope: Supplied complete with installation and installation of noise barriers in via Passo Gravina - Catania, best described in the technical specifications, functional implementation of the project executive "noise Capture - capture wellness / mosquito noise - Grab the welfare" Axis VI line 6.
Picture controls can be customized for each source, allowing the user to set Brightness, Contrast, Color, Hue, Mosquito Noise Reduction, Fine Detail and Edge Enhancement.
It is backing the attempt to ban the Mosquito noise machines because they infringe the human rights of gangs of yobs who hang around outside shops, although Liberty disregards the human rights of shoppers.
Shafqat Khalil lives nearest the steps where the gang hang out and police fitted a Mosquito noise device to deter the yobs.
An annoying mosquito noise which can only be heard by people aged under 25 was also considered - but was discounted in favour of classical music.