The concept of Von mises stress arises from the distortion energy failure theory. Limitations. Learn more. For example, in noise reduction systems like the Dolby system, an audio signal is deliberately distorted in ways that emphasize aspects of the signal that are subject to electrical noise, then it is symmetrically "undistorted" after passing through a noisy communication channel, reducing the noise in the received signal. Cependant, le groupe ayant été formé en 1964, il serait surprenant que cette légende soit fondée, puisque la distorsion aurait été utilisée dès 1956 par Paul Burlison, le guitariste … The shape of the Earth is represented as a sphere. Distortion is also used as a musical effect, particularly with electric guitars. The Mercator projection, for example, distorts by exaggerating the size of regions at high latitude. Non-flat frequency response is a form of distortion that occurs when different frequencies are amplified by different amounts in a filter. Définition : distorsion (f) (méd) État d’une partie du corps qui se tourne d’un seul côté par le relâchement des muscles opposés, ou par la contraction des muscles correspondants. Distortion definition, an act or instance of distorting. The scale is correct along the standard parallels. With the scoop switch, the mids can be lowered, at which point it becomes quite nasty. De très nombreux exemples de phrases traduites contenant "areas of distortion" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. Some patients may have a small problem area that can be addressed in as little as an hour of surgery. Many approaches are described in the literature for measuring the distortion of an optical window, but most suffer from either poor resolution or processing difficulties. If you’re working with a data set of persons per square mile, for example, your map needs to make sure each square mile looks the same size. 2 : a lack of correspondence of size or intensity in an image resulting from defects in an optical system. The shape of the Earth is represented as a sphere. La distorsion de ségrégation (DS) des allèles est un phénomène commun à tous les êtres vivants. Scale is true along the equator. distortion définition, signification, ce qu'est distortion: 1. a change to the intended or true meaning of something: 2. a change to the original or natural…. Medical Definition of distortion. The benefits of this definition of the total harmonic distortion were shown by Shmilovitz [17]. Other forms of audio distortion are non-flat frequency response, compression, modulation, aliasing, quantization noise, wow and flutter from analog media such as vinyl records and magnetic tape. This form of distortion mostly occurs due to electrical reactance. See more. In some situations, however, distortion may be desirable. PSNR (sigle de Peak Signal to Noise Ratio) est une mesure de distorsion utilisée en image numérique, tout particulièrement en compression d'image. Forums pour discuter de distortion, voir ses formes composées, des exemples et poser vos questions. The first trace (in black) shows the input. Although they can represent size, shape, distance and directions of the Earth features with reasonable accuracy, globes are not practical or suitable for many applications. Another word for distortion. Prononciation de distortion définition distortion traduction distortion signification distortion dictionnaire distortion quelle est la définition de distortion . If areas get distorted, some places will start looking sparser or denser than they really are. Recommended for narrow areas extending along the central line. as, When the transfer function comprises only a perfect gain constant A and perfect delay T. the output is undistorted. This produces an uncorrectable loss of information. Telegraphic distortion is a similar and older problem, distorting the ratio between mark and space intervals.[2]. One of the many lines on maps running from the North Pole to the South Pole; used to measure degrees of longitude . En savoir plus. As the system output is given by y(t) = F(x(t)), then if the inverse function F−1 can be found, and used intentionally to distort either the input or the output of the system, then the distortion is corrected. See more. Elles n’émanent pas de la rédaction du Monde ou de Dicocitations et ne sauraient les engager. Déséquilibre, manque d'harmonie entre deux ou plusieurs choses . Select a tool from the toolbox. Distance. Fr., 1967, p. 346). No output signal will be measured in a linear channel. Map Projections - types and distortion patterns. distortion synonymes, distortion antonymes. - Distorsion de la … The audit ruled out any distortion of the accounting records. (Médecine) État d’une partie du corps qui se tourne d’un seul côté par le relâchement des muscles opposés, ou par la contraction des muscles correspondants. {\displaystyle y(t)} Distortion energy theory. [Category=Geospatial ] ...Map Projection Distortions Each of the different types of projections have strenghts and weaknesses. In the audio case, this is mainly caused by room acoustics, poor loudspeakers and microphones, long loudspeaker cables in combination with frequency dependent loudspeaker impedance, etc. défaut d'une image dans laquelle certaines formes géométriques des objets ne sont pas respectées. Action de distordre. The amount of distortion, however, is regular along some lines in the map. Direction is distorted elsewhere. 1.1 Étymologie; 1.2 Nom commun; 1.3 Prononciation; 1.4 Voir aussi; Anglais [modifier le wikicode] Étymologie [modifier le wikicode] Du latin distortio. ecb.europa.eu. Note that the resulting value may exceed one. x . (in support of MIL-STD-188), This article is about technology, especially electrical engineering. La paralysie du nerf facial produit la distorsion de la face. y Example sentences with "distorted surface area", translation memory. 7 synonyms of distortion from the Merriam-Webster Thesaurus, plus 4 related words, definitions, and antonyms. Définition, traduction, prononciation, anagramme et synonyme sur le dictionnaire libre Wiktionnaire. distortion definition: 1. a change to the intended or true meaning of something: 2. a change to the original or natural…. 1 : the censorship of unacceptable unconscious impulses so that they are unrecognizable to the ego in the manifest content of a dream. This would mean that features lying on the 20th parallel are equally distorted, features on the 40th parallel are equally distorted … distortion definition: 1. a change to the intended or true meaning of something: 2. a change to the original or natural…. These measurements should be expressed as a percentage of the surface area of the original euro banknote [...] before it was mutilated or damaged, in order [...] to prevent the distortion of measurements, [...] for instance in situations where the [...] euro banknote is mutilated or damaged due to shrinkage. With respect to audio, distortion refers to any kind of deformation of an output waveform compared to its input, usually clipping, harmonic distortion, or intermodulation distortion (mixing phenomena) caused by non-linear behavior of electronic components and power supply limitations. A second definition of distortion is given by the American Society for Testing and Materials (ASTM) [5] and states that distortion is equal to one over the focal length, F, of the lens formed by the curvature of the window, i.e. Définition. A conformal map distorts area—most features are depicted too large or too small. Area. région à surface déformée. distortion - [map projections] On a map or image, the misrepresentation of shape, area, distance, or direction of or between geographic features when compared to their true measurements on the curved surface of the earth. © 2012 - CNRTL 44, avenue de la Libération BP 30687 54063 Nancy Cedex - France Tél. Since the definition of non-linear distortion was that the transfer characteristic should deviate from a straight line, we could measure the deviations. A globe is a scaled down model of the Earth. distortion - WordReference English dictionary, questions, discussion and forums. Example sentences with the word distortion. It also shows the output from a non-distorting transfer function (straight line). D F≡(1/ ). distortion example sentences. Nonlinear distortion also is called intermodulation distortion (IMD) and is measured by applying four voiceband tones to the input of the channel and measuring the output signals after notch filtering the original input signals. [8] High frequency Harmonic Distortion in Amplifiers.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Cancellation of even-order harmonic distortion, Audio Electronics by John Linsley Hood; page 162, "Telegraphic Type Services Standard Interface Specifications", https://en.wikipedia.org/w/index.php?title=Distortion&oldid=995156666, Wikipedia articles incorporating text from the Federal Standard 1037C, Wikipedia articles incorporating text from MIL-STD-188, Creative Commons Attribution-ShareAlike License. In cartography, a distortion is the misrepresentation of the area or shape of a feature. Action de distendre un muscle, un ligament, de déformer le... La distorsion entre les salaires masculins et féminins. [3] Terms for specific types of nonlinear audio distortion include: crossover distortion and slew-induced distortion (SID). For other uses, see, "Distort" redirects here. Sommaire. Meridian. This is sometimes called bias distortion. 2. in psychology, the process of altering or disguising unconscious ideas or impulses so that they become acceptable to the conscious mind. An example of a similar correction is where LP/vinyl recordings or FM audio transmissions are deliberately pre-emphasised by a linear filter, the reproducing system applies an inverse filter to make the overall system undistorted. For other uses, see. distortion - traduction anglais-français. The Mercator map is so popular that most people have a mental image of the world that is wildly inaccurate. See more. In the art world, a distortion is any change made by an artist to the size, shape or visual character of a form to express an idea, convey a feeling or enhance visual impact. can be written as a function of the input In optics, image/optical distortion is a divergence from rectilinear projection caused by a change in magnification with increasing distance from the optical axis of an optical system. The human ear cannot hear phase distortion, except that it may affect the stereo imaging. In a filter, group delay tends to peak near the cut-off frequency, resulting in pulse distortion. Distortion is usually unwanted, and so engineers strive to eliminate or minimize it. The Mercator projection, for example, distorts by exaggerating the size of regions at high latitude. Enrich your vocabulary with the English Definition … If you can't stop talking, don't sit in the quiet area of the library. Find more ways to say distortion, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. Equal-area projection definition, a projection in which regions on the earth's surface that are of equal area are represented as equal. Distortion definition: Distortion is the changing of something into something that is not true or not acceptable... | Meaning, pronunciation, translations and examples distortion [dis-tor´shun] 1. the state of being twisted out of a natural or normal shape or position. A nonlinear channel will have a measurable output signal. Normally it sounds loud, crunchy, obscure, bright and full of character, but it can be much more than this narrow definition. Une certaine altération du signal est inévitable ; on cherche à transmettre celui-ci avec le plus d'exactitude possible. Définitionsde distorsion. Distorsion entre les prix de revient et les ressources des Français (Belorgey, Gouvern. For example, the non-uniform frequency response curve of AC-coupled cascade amplifier is an example of frequency distortion. If distortion control is used, the energy dissipated by distortion control can be output upon request (see “Abaqus/Explicit output variable identifiers,” Section 4.2.2, for details). et/ou au fig. t Nonlinearities in the transfer function of an active device (such as vacuum tubes, transistors, and operational amplifiers) are a common source of non-linear distortion; in passive components (such as a coaxial cable or optical fiber), linear distortion can be caused by inhomogeneities, reflections, and so on in the propagation path. Scale distortion is severe near the poles. et admin. Définitions de distortionner, synonymes, antonymes, dérivés de distortionner, dictionnaire analogique de distortionner (français) This article covers several key issues on distortion in arc welded fabrications, especially basic types of and factors affecting the degree of distortion. Amplitude distortion is distortion occurring in a system, subsystem, or device when the output amplitude is not a linear function of the input amplitude under specified conditions. Électroacoustique. How to use distortion in a sentence. See more. Area — Maps of density demand equal area projections. According to the standard, h can generally be limited to 50.This equation produces a single value indicating the distortion of a voltage or a current flowing at a given point in a distribution system. distorsion, nom féminin Sens 1 Défaut d'un appareil qui enregistre des sons ou des images et qui les reproduit de façon déformée . Direction. In a waveguide, phase velocity varies with frequency. All Free. You can also use the Zoom tool to drag over an area of the preview you want to magnify. Copy to clipboard; Details / edit ; Termium. There are 4 ways a map can be distorted: size, shape, direction, and distance. ) This diagram shows the behaviour of a signal (made up of a square wave followed by a sine wave) as it is passed through various distorting functions. In most fields, distortion is characterized as unwanted change to a signal. Gratuit. DISTORSION (s. f.) [di-stor-sion ; en vers, de quatre syllabes]. Harmonic distortion is generally expressed as a percentage. Sharp distortion with high tone definition - no eye will remain dry. Cambridge Dictionary +Plus In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio signal representing sound or a video signal representing images, in an electronic device or communication channel. This definition complies with that of standard IEC 61000-2-2.. Different types of distortion (like crossover distortion) are more audible than others (like soft clipping) even if the THD measurements are identical. Keep scrolling for more. Dissertation definition, a written essay, treatise, or thesis, especially one written by a candidate for the degree of Doctor of Philosophy. distortion - a change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal); "heavy metal guitar players use vacuum tube amplifiers to produce extreme distortion" Distortion is the alteration of the original shape (or other characteristic) of something. Local angles are correct along standard parallels or standard lines. (6) This definition describes distortion in … Learn more. Quality measures that reflect both noise and distortion include the signal-to-noise and distortion (SINAD) ratio and total harmonic distortion plus noise (THD+N). Déformation d'un phénomène périodique au cours de sa transmission. In telecommunication and signal processing, a noise-free system can be characterised by a transfer function, such that the output distorsion \dis.tɔʁ.sjɔ̃\ féminin. In binary signaling such as FSK, distortion is the shifting of the significant instants of the signal pulses from their proper positions relative to the beginning of the start pulse. Distortion and overdrive are forms of audio signal processing used to alter the sound of amplified electric musical instruments, usually by increasing their gain, producing a "fuzzy", "growling", or "gritty" tone.Distortion is most commonly used with the electric guitar, but may also be used with other electric instruments such as bass guitar, electric piano, and Hammond organ. Plus, the name and graphics are … definition of cities and rural areas: the new degree of urbanisation Lewis Dijkstra and Hugo Poelman ... area size, the results are distorted and reduce the comparability ... To avoid this distortion, the method had to find a way of looking distortion. Électricité. This problem is caused by map distortion. Harmonic distortion may be expressed in terms of the relative strength of individual components, in decibels, or the root mean square of all harmonic components: Total harmonic distortion (THD), as a percentage. The level at which harmonic distortion becomes audible depends on the exact nature of the distortion. It is also modeled more accurately as an oblate spheroid or an ellipsoid.A globe is a scaled down model of the Earth. The addition of noise or other outside signals (hum, interference) is not considered distortion, though the effects of quantization distortion are sometimes included in noise. There is no area distortion. Examples include push-pull amplifiers and long-tailed pairs. déformation indésirable d'un signal fonction du temps, qui se produit dans un appareil ou au cours d'une opération telle que l'enregistrement, la reproduction ou la transmission. Déformation par une torsion. A type of map invented by Geradus Mercator in 1569 to help ship masters across the sea, it had a distortion however, that being the distortion of the size of areas particularly the North and South poles. The transfer function of an ideal amplifier, with perfect gain and delay, is only an approximation. Distortion. What causes distortion? Arnoux, Double chance, 1958, p. 83. If F is a linear function, for instance a filter whose gain and/or delay varies with frequency, the signal suffers linear distortion. The area is a part of a place, usually defined by a function. It is important that imagery seen through large area windows, such as those used on space vehicles, not be substantially distorted. 2. In practice, this is a poor method for analogue audio (although good for converters between analogue and digital) because the small deviations produced by high-quality audio make it difficult to keep measurement uncertainties below the deviations. Mourant sous les roues carnassières Dans son crâne vague, il sentit Une distorsion étrangère Avant de connaître l’oubli This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C". Chaque définition comme celle de Distorsion est issue du Dictionnaire de la langue française d'Émile Littré dont la rédaction dura de 1847 à 1865. Select the Zoom tool from the toolbox in the dialog box, and click in the image to zoom in, or Alt-click (Option-click in Mac OS) to zoom out. Often referred to as "abstraction," examples of distortion include "The Weeping Woman" by Picasso and "The Adoration of the Shepherds" by El Greco. Can be found only in dispersive media. Décrite comme une grande force de l’évolution, elle est causée par divers facteurs génétiques ou physiologiques, influencés par l’environnement. Breast architectural distortion is a descriptive term in breast imaging (mammography, ultrasound, and MRI) to indicate that the breast parenchyma is tethered or indented. It may be more listenable with less distortion at a lower power output level, but if you run into a amplifier or receiver that lists a 10% distortion level (or any distortion level higher than 1%) for its stated power output, try to get some. Correction is not possible if the inverse does not exist—for instance if the transfer function has flat spots (the inverse would map multiple input points to a single output point). distortion definition in English dictionary, distortion meaning, synonyms, see also 'barrel distortion',harmonic distortion',distortional',distort'. Distortion in music is often intentionally used as an effect when applied to an electric guitar signal in styles of rock music such as heavy metal and punk rock. The word distortion in simple terms is a word used to described mammographical abnormalities in which the architecture of a portion of the breast doesn't look normal. Distortion definition, an act or instance of distorting. : +33 3 83 96 21 76 - Fax : +33 3 83 97 24 56 Vous avez prononcé, mon cher (...) des mots qui ne se conjuguent, ne se goupillent que d'une façon très aléatoire, par distorsion du sens et par interprétation abusive. Les progrès en la matière ont donné en audio le concept de Haute Fidélité3. They are hard to transport and store; for example you can not stuff a globe in your backpack whil… Distortion occurs when the transfer function F is more complicated than this. Find another word for distortion. translation and definition "distorted surface area", English-French Dictionary online. traduction distorsions dans la dans le dictionnaire Francais - Espagnol de Reverso, voir aussi 'distorsion',distorsion dans la taxation des revenus mobiliers',distribution au détail',distinct', conjugaison, expressions idiomatiques Harmonic distortion adds overtones that are whole number multiples of a sound wave's frequencies. Informations sur distortion dans le dictionnaire gratuit en ligne anglais et encyclopédie. distortion [dis-tor´shun] 1. the state of being twisted out of a natural or normal shape or position. 2. in psychology, the process of altering or disguising unconscious ideas or impulses so that they become acceptable to the conscious mind. Many symmetrical electronic circuits reduce the magnitude of even harmonics generated by the non-linearities of the amplifier's components, by combining two signals from opposite halves of the circuit where distortion components that are roughly the same magnitude but out of phase. [1] Nonlinearities that give rise to amplitude distortion in audio systems are most often measured in terms of the harmonics (overtones) added to a pure sinewave fed to the system. Although they can represent size, shape, distance and directions of the Earth features with reasonable accuracy, globes are not practical or suitable for many applications. Sens du mot. Distorsion is one of the other abnormalities such as mass and calcifications that could be seen on a mammogram. Cylindrical equal area is an equal-area (equivalent) projection. Even on a conformal map, shapes are a bit distorted for very large areas, like continents. 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Distorted, some places will area distortion definition looking sparser or denser than they really are, definitions and... Defects in an optical system along some lines in the map become acceptable to the intended true. With high tone definition - no eye will remain dry is important that imagery seen through large area windows such., des exemples et poser vos questions response is a scaled down model of the abnormalities. Mesurant la qualité de reconstruction de l'image compressée par rapport à l'image originale more complicated than this plus 4 words! Map, shapes are a bit distorted for very large areas, like.! Ideal unit pulse length specific types of distortion mostly occurs due to electrical reactance the.... As little as an hour of surgery frequency distortion 4 Since the definition of non-linear distortion was the. De distorsion est issue du Littré ne sont pas respectées want to magnify usually defined by a.. 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May affect the stereo imaging due to electrical reactance avec le plus d'exactitude possible, discussion forums! When analog long distance trunks were commonplace, for example in 12 channel carrier, group delay tends to near. De Haute Fidélité3 projection in which regions on the Earth for example, it affect. Des images et qui les reproduit de façon déformée, Gouvern ne passant pas par optique! They are unrecognizable to the intended or true meaning of something: 2. a change to the ego the!