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79 relations: Albert Rose (physicist), Alignment level, Amplitude, Analog Devices, Analog-to-digital converter, Audio engineer, Audio system measurements, Bandwidth (signal processing), Carrier frequency, Channel capacity, Coefficient of variation, Comb filter, Communication channel, Contrast ratio, Contrast-to-noise ratio, Decibel, Digital image processing, Distortion, Dither, Dynamic range, Eb/N0, Electrical impedance, Electrical reactance, Electrical resistance and conductance, Engineering, Error, Expected value, Exponentiation, Film speed, Filter (signal processing), Floating-point arithmetic, Full scale, Generation loss, Ice core, Image, Information, Interferometry, Internet forum, Isotope, Lock-in amplifier, Logarithm, Low-noise amplifier, Luminance, Matched filter, Maxim Integrated, Mean, Modulation error ratio, Near–far problem, Noise, Noise (electronics), ..., Noise (signal processing), Noise margin, Nominal level, Off topic, Omega ratio, Optical power, Optical spectrometer, Peak signal-to-noise ratio, Power (physics), Quantization (signal processing), Rane Corporation, Root mean square, Sawtooth wave, Shannon–Hartley theorem, Signal, Signal transduction, Signal-to-interference-plus-noise ratio, Signal-to-noise ratio (imaging), Signal-to-noise statistic, SINAD, Sine wave, Spamming, Standard deviation, Subjective video quality, Total harmonic distortion, Variance, Video quality, Voltage, 16-bit. Expand index (29 more) »
Albert Rose (physicist)
Albert Rose (30 March 1910 – 26 July 1990) was an American physicist, who made major contributions to TV video camera tubes such as the orthicon, image orthicon, and vidicon.
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Alignment level
The alignment level in an audio signal chain or on an audio recording is a defined anchor point that represents a reasonable or typical level.
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Amplitude
The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period).
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Analog Devices
Analog Devices, Inc., also known as ADI or Analog, is an American multinational semiconductor company specializing in data conversion and signal processing technology, headquartered in Norwood, Massachusetts.
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Analog-to-digital converter
In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal.
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Audio engineer
An audio engineer (also sometimes recording engineer or a vocal engineer) helps to produce a recording or a performance, editing and adjusting sound tracks using equalization and audio effects, mixing, reproduction, and reinforcement of sound.
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Audio system measurements
Audio system measurements are made for several purposes.
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Bandwidth (signal processing)
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.
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Carrier frequency
In telecommunication systems, Carrier frequency is a technical term used to indicate.
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Channel capacity
Channel capacity, in electrical engineering, computer science and information theory, is the tight upper bound on the rate at which information can be reliably transmitted over a communication channel.
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Coefficient of variation
In probability theory and statistics, the coefficient of variation (CV), also known as relative standard deviation (RSD), is a standardized measure of dispersion of a probability distribution or frequency distribution.
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Comb filter
In signal processing, a comb filter is a filter implemented by adding a delayed version of a signal to itself, causing constructive and destructive interference.
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Communication channel
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.
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Contrast ratio
The contrast ratio is a property of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing.
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Contrast-to-noise ratio
Contrast-to-noise ratio (CNR) is a measure used to determine image quality.
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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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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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Distortion
Distortion is the alteration of the original shape (or other characteristic) of something.
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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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Dynamic range
Dynamic range, abbreviated DR, DNR, or DYR is the ratio between the largest and smallest values that a certain quantity can assume.
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Eb/N0
Eb/N0 (the energy per bit to noise power spectral density ratio) is an important parameter in digital communication or data transmission.
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Electrical impedance
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.
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Electrical reactance
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.
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Electrical resistance and conductance
The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.
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Engineering
Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations.
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Error
An error (from the Latin error, meaning "wandering") is an action which is inaccurate or incorrect.
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Expected value
In probability theory, the expected value of a random variable, intuitively, is the long-run average value of repetitions of the experiment it represents.
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Exponentiation
Exponentiation is a mathematical operation, written as, involving two numbers, the base and the exponent.
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Film speed
Film speed is the measure of a photographic film's sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system.
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Filter (signal processing)
In signal processing, a filter is a device or process that removes some unwanted components or features from a signal.
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Floating-point arithmetic
In computing, floating-point arithmetic is arithmetic using formulaic representation of real numbers as an approximation so as to support a trade-off between range and precision.
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Full scale
In electronics and signal processing, full scale or full code represents the maximum amplitude a system can present.
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Generation loss
Generation loss is the loss of quality between subsequent copies or transcodes of data.
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Ice core
An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier.
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Image
An image (from imago) is an artifact that depicts visual perception, for example, a photo or a two-dimensional picture, that has a similar appearance to some subject—usually a physical object or a person, thus providing a depiction of it.
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Information
Information is any entity or form that provides the answer to a question of some kind or resolves uncertainty.
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Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic waves, are superimposed causing the phenomenon of interference in order to extract information.
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Internet forum
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages.
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Isotope
Isotopes are variants of a particular chemical element which differ in neutron number.
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Lock-in amplifier
A lock-in amplifier is a type of amplifier that can extract a signal with a known carrier wave from an extremely noisy environment.
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Logarithm
In mathematics, the logarithm is the inverse function to exponentiation.
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Low-noise amplifier
A low-noise amplifier (LNA) is an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio.
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Luminance
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction.
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Matched filter
In signal processing, a matched filter is obtained by correlating a known signal, or template, with an unknown signal to detect the presence of the template in the unknown signal.
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Maxim Integrated
Maxim Integrated is an American, publicly traded company that designs, manufactures, and sells analog and mixed-signal integrated circuits.
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Mean
In mathematics, mean has several different definitions depending on the context.
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Modulation error ratio
The modulation error ratio or MER is a measure used to quantify the performance of a digital radio (or digital TV) transmitter or receiver in a communications system using digital modulation (such as QAM).
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Near–far problem
The near–far problem or hearability problem is a situation that is common in wireless communication systems, in particular, CDMA.
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Noise
Noise is unwanted sound judged to be unpleasant, loud or disruptive to hearing.
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Noise (electronics)
In electronics, noise is an unwanted disturbance in an electrical signal.
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Noise (signal processing)
In signal processing, noise is a general term for unwanted (and, in general, unknown) modifications that a signal may suffer during capture, storage, transmission, processing, or conversion.
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Noise margin
In electrical engineering, noise margin is the amount by which a signal exceeds the minimum amount for proper operation.
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Nominal level
Nominal level is the operating level at which an electronic signal processing device is designed to operate.
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Off topic
In the context of mailing lists, discussion groups, discussion forums, bulletin boards, newsgroups, and wikis a contribution is off-topic if it is not within the bounds of the current discussion, and on-topic if it is.
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Omega ratio
The Omega ratio is a risk-return performance measure of an investment asset, portfolio, or strategy.
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Optical power
Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or diverges light.
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Optical spectrometer
An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials.
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Peak signal-to-noise ratio
Peak signal-to-noise ratio, often abbreviated PSNR, is an engineering term for the ratio between the maximum possible power of a signal and the power of corrupting noise that affects the fidelity of its representation.
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Power (physics)
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
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Quantization (signal processing)
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.
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Rane Corporation
Rane Corporation is an American pro audio equipment manufacturer.
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Root mean square
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).
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Sawtooth wave
The sawtooth wave (or saw wave) is a kind of non-sinusoidal waveform.
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Shannon–Hartley theorem
In information theory, the Shannon–Hartley theorem tells the maximum rate at which information can be transmitted over a communications channel of a specified bandwidth in the presence of noise.
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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 transduction
Signal transduction is the process by which a chemical or physical signal is transmitted through a cell as a series of molecular events, most commonly protein phosphorylation catalyzed by protein kinases, which ultimately results in a cellular response.
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Signal-to-interference-plus-noise ratio
In information theory and telecommunication engineering, the signal-to-interference-plus-noise ratio (SINR) (also known as the signal-to-noise-plus-interference ratio (SNIR)) is a quantity used to give theoretical upper bounds on channel capacity (or the rate of information transfer) in wireless communication systems such as networks.
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Signal-to-noise ratio (imaging)
The signal-to-noise ratio (SNR) is used in imaging as a physical measure of the sensitivity of a (digital or film) imaging system.
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Signal-to-noise statistic
In mathematics the signal-to-noise statistic distance between two vectors a and b with mean values \mu _a and \mu _b and standard deviation \sigma _a and \sigma _b respectively is: In the case of Gaussian-distributed data and unbiased class distributions, this statistic can be related to classification accuracy given an ideal linear discrimination, and a decision boundary can be derived.
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SINAD
Signal-to-noise and distortion ratio (SINAD) is a measure of the quality of a signal from a communications device, often defined as \mathrm.
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Sine wave
A sine wave or sinusoid is a mathematical curve that describes a smooth periodic oscillation.
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Spamming
Electronic spamming is the use of electronic messaging systems to send an unsolicited message (spam), especially advertising, as well as sending messages repeatedly on the same site.
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Standard deviation
In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.
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Subjective video quality
Subjective video quality is video quality as experienced by humans.
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Total harmonic distortion
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.
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Variance
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean.
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Video quality
Video quality is a characteristic of a video passed through a video transmission/processing system, a formal or informal measure of perceived video degradation (typically, compared to the original video).
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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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16-bit
16-bit microcomputers are computers in which 16-bit microprocessors were the norm.
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Desired-to-undesired ratio, Optical signal-to-noise ratio, S/N ratio, S/n ratio, Signal level, Signal to Noise Ratio, Signal to Noise ratio, Signal to noise level, Signal to noise ratio, Signal to noise ratio (image processing), Signal-To-Noise Ratio, Signal-noise ratio, Signal-to-Noise, Signal-to-noise, Signal-to-noise ratio (image processing), Signal-to-noise-ratio, Signal/noise ratio, Signal:noise.
References
[1] https://en.wikipedia.org/wiki/Signal-to-noise_ratio
