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Noise reduction

Index Noise reduction

Noise reduction is the process of removing noise from a signal. [1]

111 relations: Academic Press, Adobe Photoshop, AEG, Aesthetics, Algorithm, Analog signal, Analogue electronics, Anisotropic diffusion, Architectural acoustics, Art, Audacity (audio editor), Audio (magazine), Automotive head unit, Block-matching algorithm, Block-matching and 3D filtering, Cassette deck, Central limit theorem, Charge-coupled device, Companding, Computer vision, Conditional probability distribution, Convolution, Convolutional neural network, Dark-frame subtraction, Darktable, David E. Blackmer, Dbx (company), Dbx (noise reduction), Deblurring, Decibel, Deep Image Prior, Deep learning, Delco Electronics, Digital camera, Digital data, Digital image processing, Dither, Dolby Laboratories, Dolby noise-reduction system, Dolby SR, Electron, Electronic circuit, Elektro-Mess-Technik, Elsevier, Embedded system, FM broadcasting, G'MIC, Gaussian function, Gaussian noise, General Motors, ..., GIMP, Gnome Wave Cleaner, Heat equation, Helicon Filter, Henry Kloss, Hertz, High Com, Image restoration, Independent and identically distributed random variables, Iron(III) oxide, Jeep, Jeep Cherokee (XJ), JVC, Low-pass filter, Machine learning, Macroblock, Magnetic tape, Magnetite, Marketing, Median, Median filter, Nakamichi, National Semiconductor, Neat Image, Netpbm, Noise, Noise Ninja, Noise print, Noise reduction, Noise-cancelling headphones, Noiseless, Noiseware, Normal distribution, PaintShop Pro, Partial differential equation, Philips, Phonograph record, Photographic film, Pixel, Proceedings of the IEEE, Random field, Ray Dolby, Salt-and-pepper noise, Sanyo, Semiconductor, Shrinkage Fields (image restoration), Signal, Signal processing, Signal subspace, Sound masking, Tape head, Tape hiss, Taylor & Francis, Telefunken, Telephony, Toshiba, Ulead Systems, Video, Video denoising, Voltage, White noise. Expand index (61 more) »

Academic Press

Academic Press is an academic book publisher.

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Adobe Photoshop

Adobe Photoshop is a raster graphics editor developed and published by Adobe Systems for macOS and Windows.

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AEG

Allgemeine Elektricitäts-Gesellschaft AG (AEG) (German: "General electricity company") was a German producer of electrical equipment founded as the Deutsche Edison-Gesellschaft für angewandte Elektricität in 1883 in Berlin by Emil Rathenau.

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Aesthetics

Aesthetics (also spelled esthetics) is a branch of philosophy that explores the nature of art, beauty, and taste, with the creation and appreciation of beauty.

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Algorithm

In mathematics and computer science, an algorithm is an unambiguous specification of how to solve a class of problems.

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Analog signal

An analog signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal.

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Analogue electronics

Analogue electronics (also spelled analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels.

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Anisotropic diffusion

In image processing and computer vision, anisotropic diffusion, also called Perona–Malik diffusion, is a technique aiming at reducing image noise without removing significant parts of the image content, typically edges, lines or other details that are important for the interpretation of the image.

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Architectural acoustics

Architectural acoustics (also known as room acoustics and building acoustics) is the science and engineering of achieving a good sound within a building and is a branch of acoustical engineering.

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Art

Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative, conceptual idea, or technical skill, intended to be appreciated for their beauty or emotional power.

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Audacity (audio editor)

Audacity is a free and open-source digital audio editor and recording application software, available for Windows, macOS/OS X and Unix-like operating systems.

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Audio (magazine)

Audio magazine was a periodical published from 1947 to 2000, and was America's longest-running audio magazine.

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Automotive head unit

An automotive head unit, sometimes referred to as a deck, is a component of an information and entertainment system in an automobile which provides a unified hardware interface for the entire system.

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Block-matching algorithm

A Block Matching Algorithm is a way of locating matching macroblocks in a sequence of digital video frames for the purposes of motion estimation.

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Block-matching and 3D filtering

Block-matching and 3D filtering (BM3D) is a 3-D block-matching algorithm used primarily for noise reduction in images.

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Cassette deck

A cassette deck is a type of tape machine for playing and recording audio compact cassettes.

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Central limit theorem

In probability theory, the central limit theorem (CLT) establishes that, in some situations, when independent random variables are added, their properly normalized sum tends toward a normal distribution (informally a "bell curve") even if the original variables themselves are not normally distributed.

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Charge-coupled device

A charge-coupled device (CCD) is a device for the movement of electrical charge, usually from within the device to an area where the charge can be manipulated, for example conversion into a digital value.

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Companding

In telecommunication and signal processing companding (occasionally called compansion) is a method of mitigating the detrimental effects of a channel with limited dynamic range.

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Computer vision

Computer vision is a field that deals with how computers can be made for gaining high-level understanding from digital images or videos.

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Conditional probability distribution

In probability theory and statistics, given two jointly distributed random variables X and Y, the conditional probability distribution of Y given X is the probability distribution of Y when X is known to be a particular value; in some cases the conditional probabilities may be expressed as functions containing the unspecified value x of X as a parameter.

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Convolution

In mathematics (and, in particular, functional analysis) convolution is a mathematical operation on two functions (f and g) to produce a third function, that is typically viewed as a modified version of one of the original functions, giving the integral of the pointwise multiplication of the two functions as a function of the amount that one of the original functions is translated.

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Convolutional neural network

In machine learning, a convolutional neural network (CNN, or ConvNet) is a class of deep, feed-forward artificial neural networks, most commonly applied to analyzing visual imagery.

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Dark-frame subtraction

In digital photography, dark-frame subtraction is a way to minimize image noise for photographs shot with long exposure times, at high ISO sensor sensitivity or at high temperatures.

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Darktable

darktable is a free and open-source photography workflow application and raw developer.

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David E. Blackmer

David E. Blackmer (January 11, 1927 – March 21, 2002) was an American audio electronics engineer, most famous as the inventor of the DBX noise reduction system and founder of dbx.

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Dbx (company)

dbx, Inc. is an American producer of professional audio recording equipment.

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Dbx (noise reduction)

dbx is a family of noise reduction systems developed by the company of the same name.

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Deblurring

Deblurring is the process of removing blurring artifacts from images, such as blur caused by defocus aberration or motion blur.

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Decibel

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.

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Deep Image Prior

Deep Image Prior is a type of convolutional neural network used to enhance a given image with no prior training data other than the image itself.

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Deep learning

Deep learning (also known as deep structured learning or hierarchical learning) is part of a broader family of machine learning methods based on learning data representations, as opposed to task-specific algorithms.

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Delco Electronics

Delco Electronics Corporation was the automotive electronics design and manufacturing subsidiary of General Motors based in Kokomo, Indiana, that manufactured Delco radios and other electric products found in GM cars.

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Digital camera

A digital camera or digicam is a camera that captures photographs in digital memory.

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Digital data

Digital data, in information theory and information systems, is the discrete, discontinuous representation of information or works.

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Digital image processing

In computer science, Digital image processing is the use of computer algorithms to perform image processing on digital images.

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Dither

Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images.

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Dolby Laboratories

Dolby Laboratories, Inc. (often shortened to Dolby Labs) is a British-American company specializing in audio noise reduction and audio encoding/compression.

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Dolby noise-reduction system

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.

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Dolby SR

The Dolby SR (Spectral Recording) noise reduction format was developed by Dolby Laboratories and has been in common use in professional audio since 1986 and in cinema audio since the late 1980s.

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Electron

The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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Electronic circuit

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.

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Elektro-Mess-Technik

Elektro-Mess-Technik (EMT) is a manufacturer of phonograph turntables and professional audio equipment, including a well-regarded line of artificial reverberation devices beginning with the EMT 140 plate reverb.

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Elsevier

Elsevier is an information and analytics company and one of the world's major providers of scientific, technical, and medical information.

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Embedded system

An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.

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FM broadcasting

FM broadcasting is a method of radio broadcasting using frequency modulation (FM) technology.

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G'MIC

G'MIC is a free and open-source framework for image processing.

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Gaussian function

In mathematics, a Gaussian function, often simply referred to as a Gaussian, is a function of the form: for arbitrary real constants, and.

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Gaussian noise

Gaussian noise is statistical noise having a probability density function (PDF) equal to that of the normal distribution, which is also known as the Gaussian distribution.

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General Motors

General Motors Company, commonly referred to as General Motors (GM), is an American multinational corporation headquartered in Detroit that designs, manufactures, markets, and distributes vehicles and vehicle parts, and sells financial services.

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GIMP

GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks.

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Gnome Wave Cleaner

Gnome Wave Cleaner (GWC) is a digital audio editor application.

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Heat equation

The heat equation is a parabolic partial differential equation that describes the distribution of heat (or variation in temperature) in a given region over time.

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Helicon Filter

Helicon Filter, also referred to as Helicon, Filter, or as HF, was a proprietary commercial and shareware photo editing software program for Microsoft Windows, similar to such programs as Adobe Photoshop and GIMP, developed and published by Helicon Soft Ltd.

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Henry Kloss

Henry Kloss (February 21, 1929, January 31, 2002) was a prominent American audio engineer and entrepreneur who helped advance high fidelity loudspeaker and radio receiver technology beginning in the 1950s.

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Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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High Com

The High Com (also as HIGH COM, both written with a thin space) noise reduction system was developed by Telefunken, Germany, in the 1970s as a high quality high compression analogue compander for audio recordings.

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Image restoration

Image Restoration is the operation of taking a corrupt/noisy image and estimating the clean, original image.

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Independent and identically distributed random variables

In probability theory and statistics, a sequence or other collection of random variables is independent and identically distributed (i.i.d. or iid or IID) if each random variable has the same probability distribution as the others and all are mutually independent.

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Iron(III) oxide

Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe2O3.

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Jeep

Jeep is a brand of American automobiles that is a division of FCA US LLC (formerly Chrysler Group, LLC), a wholly owned subsidiary of Fiat Chrysler Automobiles.

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Jeep Cherokee (XJ)

The Jeep Cherokee (XJ) is a compact sport utility vehicle that was manufactured and marketed by Jeep in the USA from 1983 to 2001, as well as in other countries, and sometimes under other names, until 2014, with Jeep selling almost 3 million units between 1984 and 2001. Sharing the name of the original full-size Cherokee SJ model, the 1984 Cherokee XJ was Jeep's first all-new vehicle design since the 1963 SJ ''Wagoneer'', from which the '74 SJ Cherokee had been derived. Instead of the traditional separate body and chassis, the XJ featured a light-weight, compact and space-efficient, integrated body and frame design, The models were originally marketed as Sportwagons and became the precursor to the modern sport utility vehicle (SUV) as that term was not yet in use. The XJ spawned competitors as other automakers began to notice that this Jeep design began replacing regular cars. It also began to supplant the role of the station wagon and "transformed from truck to limousine in the eyes of countless suburban owners." The XJ is a "significant link in the evolution of the 4x4." Built in Toledo, Ohio, USA; Beijing, China; Ferreyra, Argentina; Cairo, Egypt; and in Valencia, Venezuela, the XJ provided the mechanical basis for the MJ-series Jeep Comanche pickup truck. Many of the XJ models had an eight-slot or a ten-slot grille design. Automotive journalist Robert Cumberford, writing for ''Automobile'', called the Jeep XJ one of the 20 greatest cars of all time — for its design, and "possibly the best SUV shape of all time, it is the paradigmatic model to which other designers have since aspired". The XJ was also selected in 2011 as one of "10 cars that refuse to die" by Kiplinger.

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JVC

,, usually referred to as JVC or The Japan Victor Company, is a Japanese international professional and consumer electronics corporation based in Yokohama.

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Low-pass filter

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.

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Machine learning

Machine learning is a subset of artificial intelligence in the field of computer science that often uses statistical techniques to give computers the ability to "learn" (i.e., progressively improve performance on a specific task) with data, without being explicitly programmed.

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Macroblock

Macroblock is a processing unit in image and video compression formats based on linear block transforms, such as the discrete cosine transform (DCT).

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Magnetic tape

Magnetic tape is a medium for magnetic recording, made of a thin, magnetizable coating on a long, narrow strip of plastic film.

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Magnetite

Magnetite is a rock mineral and one of the main iron ores, with the chemical formula Fe3O4.

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Marketing

Marketing is the study and management of exchange relationships.

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Median

The median is the value separating the higher half of a data sample, a population, or a probability distribution, from the lower half.

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Median filter

The median filter is a nonlinear digital filtering technique, often used to remove noise from an image or signal.

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Nakamichi

is a Japanese consumer electronics brand that originated in Japan and gained a name from the 1970s onwards for innovative and high quality audio cassette decks.

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National Semiconductor

National Semiconductor was an American semiconductor manufacturer which specialized in analog devices and subsystems, formerly with headquarters in Santa Clara, California, United States.

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Neat Image

Neat Image is an image noise reduction software by ABSoft.

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Netpbm

Netpbm is an open-source package of graphics programs and a programming library.

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Noise

Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing.

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Noise Ninja

Noise Ninja is a proprietary noise reduction application and Photoshop plugin which attempts to eliminate noise present in photos taken with a digital camera.

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Noise print

A noise print is part of a technique used in noise reduction.

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Noise reduction

Noise reduction is the process of removing noise from a signal.

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Noise-cancelling headphones

Noise-cancelling headphones are headphones that reduce unwanted ambient sounds using active noise control.

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Noiseless

Noiseless is an image noise reduction application by Macphun Software.

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Noiseware

Noiseware is an image noise reduction software by Imagenomic.

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Normal distribution

In probability theory, the normal (or Gaussian or Gauss or Laplace–Gauss) distribution is a very common continuous probability distribution.

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PaintShop Pro

PaintShop Pro (PSP) is a raster and vector graphics editor for Microsoft Windows.

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Partial differential equation

In mathematics, a partial differential equation (PDE) is a differential equation that contains unknown multivariable functions and their partial derivatives.

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Philips

Koninklijke Philips N.V. (Philips, stylized as PHILIPS) is a Dutch multinational technology company headquartered in Amsterdam currently focused in the area of healthcare.

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Phonograph record

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.

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Photographic film

Photographic film is a strip or sheet of transparent plastic film base coated on one side with a gelatin emulsion containing microscopically small light-sensitive silver halide crystals.

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Pixel

In digital imaging, a pixel, pel, dots, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.

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Proceedings of the IEEE

The Proceedings of the IEEE is a monthly peer-reviewed scientific journal published by the Institute of Electrical and Electronics Engineers (IEEE).

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Random field

A random field is a generalization of a stochastic process such that the underlying parameter need no longer be a simple real or integer valued "time", but can instead take values that are multidimensional vectors, or points on some manifold.

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Ray Dolby

Ray Milton Dolby (January 18, 1933 – September 12, 2013) was an American engineer and inventor of the noise reduction system known as Dolby NR.

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Salt-and-pepper noise

Salt-and-pepper noise is a form of noise sometimes seen on images.

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Sanyo

is a Japanese major electronics company and formerly a member of the Fortune Global 500 whose headquarters was located in Moriguchi, Osaka prefecture, Japan.

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Semiconductor

A semiconductor material has an electrical conductivity value falling between that of a conductor – such as copper, gold etc.

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Shrinkage Fields (image restoration)

Shrinkage fields is a random field-based machine learning technique that aims to perform high quality image restoration (denoising and deblurring) using low computational overhead.

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Signal

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".

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Signal processing

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.

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Signal subspace

In signal processing, signal subspace methods are empirical linear methods for dimensionality reduction and noise reduction.

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Sound masking

Sound masking is the addition of sound created by special digital generators and distributed by normally unseen speakers through an area to reduce distractions or provide confidentiality where needed.

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Tape head

A tape head is a type of transducer used in tape recorders to convert electrical signals to magnetic fluctuations and vice versa.

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Tape hiss

Tape hiss is the high frequency noise present on analogue magnetic tape recordings caused by the size of the magnetic particles used to make the tape.

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Taylor & Francis

Taylor & Francis Group is an international company originating in England that publishes books and academic journals.

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Telefunken

Telefunken was a German radio and television apparatus company, founded in Berlin in 1903, as a joint venture of Siemens & Halske and the Allgemeine Elektricitäts-Gesellschaft (AEG) (General electricity company).

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Telephony

Telephony is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties.

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Toshiba

, commonly known as Toshiba, is a Japanese multinational conglomerate headquartered in Tokyo, Japan.

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Ulead Systems

Ulead Systems is a Taiwanese computer software company headquartered in Neihu district in Taipei, Taiwan.

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Video

Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media.

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Video denoising

Video denoising is the process of removing noise from a video signal.

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Voltage

Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

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White noise

In signal processing, white noise is a random signal having equal intensity at different frequencies, giving it a constant power spectral density.

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References

[1] https://en.wikipedia.org/wiki/Noise_reduction

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