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.

Read more about Distortion:  Electronic Signals, Teletypewriter or Modem Signaling, Audio Distortion, Optics, Map Projections

Other articles related to "distortion":

List Of Marantz Products - Past Products - Stereo Amplifiers
... for amplifiers, WPC = Watts per channel, THD = Total harmonic distortion and ID = intermodulation distortion (if available) ... The actual distortion figures were typically much lower than stated ...
Maximum Continuous Rating - Audio Amplifiers
... the device under test to the onset of clipping, to a predetermined distortion level, variable per manufacturer or per product line ... Driving an amplifier to 1% distortion levels will yield a higher rating than driving it to 0.01% distortion levels ... frequency range, at no more than its published distortion level ...
Tact (psychology) - Distortion
... Under stronger conditions of distortion it may appear when the original stimulus is absent, as in the case of the response called a lie ... that troubadours and fiction writers are perhaps both motivated by similar forms of tact distortion ... reinforcement affects the account we may see distortion and then total fabrication ...
Distortion - Map Projections
... In cartography, a distortion is the misrepresentation of the area or shape of a feature ... The Mercator projection, for example, distorts by exaggerating the size of regions at high latitude ...
Copenhagen Distortion - History
... The name, the concept of mixing all genres and the tag-line "Distortion — A Celebration of Copenhagen Nightlife" were founded in September 1998 for a one-night party in the nightclub Mantra in ... Distortion became a 5-day mobile festival in June 2000, with seven parties in five days ... Distortion started its international party hosting concept in 2004 with DJ Colette hosting a radio show on a boat and an after-party ...

Famous quotes containing the word distortion:

    This is our fate: eight hundred years’ disaster,
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    It is not enough for theory to describe and analyse, it must itself be an event in the universe it describes. In order to do this theory must partake of and become the acceleration of this logic. It must tear itself from all referents and take pride only in the future. Theory must operate on time at the cost of a deliberate distortion of present reality.
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    Fawn M. Brodie (1915–1981)