107 relations: Aliasing, Amplitude distortion, Angle of view, Attenuation distortion, Audio signal, Audio system measurements, Bias distortion, Cartography, Cascade amplifier, Clipping (audio), Coaxial cable, Communication, Communication channel, Crossover distortion, Cutoff frequency, Decibel, Differential amplifier, Dispersion (optics), Distortion, Distortion (music), Distortion synthesis, Dolby noise-reduction system, Dynamic range compression, Electric guitar, Electrical impedance, Electrical reactance, Electronic circuit, Electronic component, Electronics, Fading, Filter (signal processing), Flutter (electronics and communication), FM broadcasting, Frequency response, Frequency-shift keying, Gain (electronics), Gain compression, Gnomonic projection, Harmonic, Heavy metal music, High-pass filter, Image warping, Integer, Interference (communication), Intermodulation, Latitude, Linear filter, Linear function, Lossy compression, Loudness war, ..., Low-pass filter, Magnetic tape, Magnification, Mains hum, Mercator projection, Mixing (physics), Modulation, My Bloody Valentine, Noise (electronics), Noise reduction, Nonlinear system, Ogg, Operational amplifier, Optical axis, Optical fiber, Optics, Overtone, Passivity (engineering), Phase (waves), Phase distortion, Phase velocity, Phonograph record, Power factor, Propagation delay, Pulse, Punk rock, Push–pull output, Quantization (signal processing), Radio frequency, Repeaters, Rock music, Root mean square, Signal, Signal processing, Signal reflection, Signaling (telecommunications), SINAD, Sine wave, Slew rate, Slew-induced distortion, Square wave, Stereo imaging, System, Telecommunication, The Adoration of the Shepherds (El Greco, Madrid), The Weeping Woman, Total harmonic distortion, Transfer function, Transistor, Tube sound, Vacuum tube, Video, Wave propagation, Waveform, Waveguide, Wow (recording), 12-channel carrier system. Expand index (57 more) » « Shrink index
In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable (or aliases of one another) when sampled.
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.
In photography, angle of view (AOV) describes the angular extent of a given scene that is imaged by a camera.
Attenuation distortion is the distortion of an analog signal that occurs during transmission when the transmission medium does not have a flat frequency response across the bandwidth of the medium or the frequency spectrum of the signal.
An audio signal is a representation of sound, typically as an electrical voltage for analog signals and a binary number for digital signals.
Audio system measurements are made for several purposes.
In telecommunication, the term bias distortion has the following meanings.
Cartography (from Greek χάρτης chartēs, "papyrus, sheet of paper, map"; and γράφειν graphein, "write") is the study and practice of making maps.
A cascade amplifier is any two-port network constructed from a series of amplifiers, where each amplifier sends its output to the input of the next amplifier in a daisy chain.
Clipping is a form of waveform distortion that occurs when an amplifier is overdriven and attempts to deliver an output voltage or current beyond its maximum capability.
Cross-sectional view of a coaxial cable Coaxial cable, or coax (pronounced), is a type of electrical cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.
Communication (from Latin commūnicāre, meaning "to share") is the act of conveying intended meanings from one entity or group to another through the use of mutually understood signs and semiotic rules.
A communication channel or simply channel refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel in telecommunications and computer networking.
Crossover distortion is a type of distortion which is caused by switching between devices driving a load, most often when the devices (such as a transistor) are matched.
In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced (attenuated or reflected) rather than passing through.
The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.
A differential amplifier is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common to the two inputs.
In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency.
Distortion is the alteration of the original shape (or other characteristic) of something.
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 synthesis is a group of sound synthesis techniques which modify existing sounds to produce more complex sounds (or timbres), usually by using non-linear circuits or mathematics.
A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog magnetic tape recording.
Dynamic range compression (DRC) or simply compression is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds thus reducing or compressing an audio signal's dynamic range.
An electric guitar is a guitar that uses one or more pickups to convert the vibration of its strings into electrical signals.
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.
In electrical and electronic systems, reactance is the opposition of a circuit element to a change in current or voltage, due to that element's inductance or capacitance.
An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.
An electronic component is any basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields.
Electronics is the discipline dealing with the development and application of devices and systems involving the flow of electrons in a vacuum, in gaseous media, and in semiconductors.
In wireless communications, fading is variation or the attenuation of a signal with various variables.
In signal processing, a filter is a device or process that removes some unwanted components or features from a signal.
In electronics and communication, flutter is the rapid variation of signal parameters, such as amplitude, phase, and frequency.
FM broadcasting is a method of radio broadcasting using frequency modulation (FM) technology.
Frequency response is the quantitative measure of the output spectrum of a system or device in response to a stimulus, and is used to characterize the dynamics of the system.
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal.
In electronics, gain is a measure of the ability of a two-port circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output port by adding energy converted from some power supply to the signal.
Gain compression is a reduction in "differential" or "slope" gain caused by nonlinearity of the transfer function of the amplifying device.
A gnomonic map projection displays all great circles as straight lines, resulting in any straight line segment on a gnomonic map showing a geodesic, the shortest route between the segment's two endpoints.
A harmonic is any member of the harmonic series, a divergent infinite series.
Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom.
A high-pass filter (HPF) is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency.
Image warping is the process of digitally manipulating an image such that any shapes portrayed in the image have been significantly distorted.
An integer (from the Latin ''integer'' meaning "whole")Integer 's first literal meaning in Latin is "untouched", from in ("not") plus tangere ("to touch").
In communications and electronics, especially in telecommunications, interference is anything which modifies, or disrupts a signal as it travels along a channel between a source and a receiver.
Intermodulation (IM) or intermodulation distortion (IMD) is the amplitude modulation of signals containing two or more different frequencies, caused by nonlinearities in a system.
In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface.
Linear filters process time-varying input signals to produce output signals, subject to the constraint of linearity.
In mathematics, the term linear function refers to two distinct but related notions.
In information technology, lossy compression or irreversible compression is the class of data encoding methods that uses inexact approximations and partial data discarding to represent the content.
The loudness war (or loudness race) refers to the trend of increasing audio levels in recorded music which many critics believe reduces sound quality and listener enjoyment.
A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.
Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film.
Magnification is the process of enlarging the appearance, not physical size, of something.
Mains hum, electric hum, or power line hum is a sound associated with alternating current at the frequency of the mains electricity.
The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer Gerardus Mercator in 1569.
In physics, a dynamical system is said to be mixing if the phase space of the system becomes strongly intertwined, according to at least one of several mathematical definitions.
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.
My Bloody Valentine may refer to.
In electronics, noise is an unwanted disturbance in an electrical signal.
Noise reduction is the process of removing noise from a signal.
In mathematics and science, a nonlinear system is a system in which the change of the output is not proportional to the change of the input.
Ogg is a free, open container format maintained by the Xiph.Org Foundation.
An operational amplifier (often op-amp or opamp) is a DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output.
An optical axis is a line along which there is some degree of rotational symmetry in an optical system such as a camera lens or microscope.
An optical fiber or optical fibre is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair.
Optics is the branch of physics which involves the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.
An overtone is any frequency greater than the fundamental frequency of a sound.
Passivity is a property of engineering systems, used in a variety of engineering disciplines, but most commonly found in analog electronics and control systems.
Phase is the position of a point in time (an instant) on a waveform cycle.
In signal processing, phase distortion or phase-frequency distortion is distortion, that is, change in the shape of the waveform, that occurs when (a) a filter's phase response is not linear over the frequency range of interest, that is, the phase shift introduced by a circuit or device is not directly proportional to frequency, or (b) the zero-frequency intercept of the phase-frequency characteristic is not 0 or an integral multiple of 2π radians.
The phase velocity of a wave is the rate at which the phase of the wave propagates in space.
A phonograph record (also known as a gramophone record, especially in British English, or record) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.
In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of −1 to 1.
Propagation delay is a technical term that can have a different meaning depending on the context.
In medicine, a pulse represents the tactile arterial palpation of the heartbeat by trained fingertips.
Punk rock (or "punk") is a rock music genre that developed in the mid-1970s in the United States, United Kingdom, and Australia.
A push–pull amplifier is a type of electronic circuit that uses a pair of active devices that alternately supply current to, or absorb current from, a connected load.
Quantization, in mathematics and digital signal processing, is the process of mapping input values from a large set (often a continuous set) to output values in a (countable) smaller set.
Radio frequency (RF) refers to oscillatory change in voltage or current in a circuit, waveguide or transmission line in the range extending from around twenty thousand times per second to around three hundred billion times per second, roughly between the upper limit of audio and the lower limit of infrared.
Repeaters is a 2010 Canadian thriller film directed by Carl Bessai, written by Arne Olsen, and starring Dustin Milligan, Amanda Crew, and Richard de Klerk as young drug addicts who find themselves stuck in a time loop.
Rock music is a broad genre of popular music that originated as "rock and roll" in the United States in the early 1950s, and developed into a range of different styles in the 1960s and later, particularly in the United Kingdom and in the United States.
In statistics and its applications, the root mean square (abbreviated RMS or rms) is defined as the square root of the mean square (the arithmetic mean of the squares of a set of numbers).
A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".
Signal processing concerns the analysis, synthesis, and modification of signals, which are broadly defined as functions conveying "information about the behavior or attributes of some phenomenon", such as sound, images, and biological measurements.
Signal reflection occurs when a signal is transmitted along a transmission medium, such as a copper cable or an optical fiber.
In telecommunication, signaling has the following meanings.
Signal-to-noise and distortion ratio (SINAD) is a measure of the quality of a signal from a communications device, often defined as \mathrm.
A sine wave or sinusoid is a mathematical curve that describes a smooth periodic oscillation.
In electronics, slew rate is defined as the change of voltage or current, or any other electrical quantity, per unit of time.
Slew-induced distortion (SID or slew-rate induced distortion) is caused when an amplifier or transducer is required to change output (or displacement), i.e. slew rate, faster than it is able to do so without error.
A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values, with the same duration at minimum and maximum.
Stereo imaging refers to the aspect of sound recording and reproduction concerning the perceived spatial locations of the sound source(s), both laterally and in depth.
A system is a regularly interacting or interdependent group of items forming an integrated whole.
Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.
The Adoration of the Shepherds is a painting of the traditional subject which was painted during the last year of El Greco's life.
The Weeping Woman is an oil on canvas painted by Pablo Picasso in France in 1937.
The total harmonic distortion (THD) is a measurement of the harmonic distortion present in a signal and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency.
In engineering, a transfer function (also known as system function or network function) of an electronic or control system component is a mathematical function giving the corresponding output value for each possible value of the input to the device.
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.
Tube sound (or valve sound) is the characteristic sound associated with a vacuum tube amplifier (valve amplifier in British English), a vacuum tube-based audio amplifier.
In electronics, a vacuum tube, an electron tube, or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media.
Wave propagation is any of the ways in which waves travel.
A waveform is the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.
A waveguide is a structure that guides waves, such as electromagnetic waves or sound, with minimal loss of energy by restricting expansion to one dimension or two.
Wow is a relatively slow form of flutter (pitch variation) that can affect gramophone records and tape recorders.
In the U.S. telephone network, the 12-channel carrier system was an early frequency-division multiplexing system standard, used to carry multiple telephone calls on a single twisted pair of wires, mostly for short to medium distances.