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{{Short description|Noise in the form of sparse, random black and white pixels on digital images}} [[File:Noise salt and pepper.png|thumb|An image with salt-and-pepper noise]] ...

{{short description|Level of background noise in a signal}} {{about|physics term|the [[Bright Eyes (band)|Bright Eyes]] album|Noise Floor (Rarities: 1998–2005)}} ...

{{Short description|Type of noise in signal processing}} {{multiple image ...

{{Short description|Noise pattern on digital imaging sensors}} {{For|fixed-pattern noise in video projectors|Screen-door effect}} ...

...in image processing is known as ‘[[Floyd Steinberg dithering]]’; and many noise shaping algorithms used in audio processing are based on an ‘[[Absolute thr ...y putting [[quantization noise]] in a feedback loop designed to filter the noise as desired. ...

| [[Sine wave]] || [[Image:Simple sine wave.svg|100px]] || <math>{1 \over \sqrt{2}} \approx 0.707</mat | [[Rectifier#Full-wave rectification|Full-wave rectified]] sine || [[Image:Simple full-wave rectified sine.svg|100px]] || <math>{1 \over \sqrt{2}} \ap ...

{{short description|Non-linear digital filtering technique to remove noise}} [[Image:Median filter example.jpg|thumb|right|200px|Example of 3 median filters of ...

...omagnetic fields|electromagnetically induced acoustic noise and vibration||Noise (disambiguation)}} [[File:Pink.noise.png|thumb|Random fluctuations of voltage in [[pink noise]]]] ...

...es).png|thumb|180px|Digital generation loss induced by rotating a [[JPEG]] image 90 degrees (from top to bottom) 0, 100, 200, 500, 900, and 2000 times (with ...es the quality of the representation when copying, and would cause further reduction in quality on making a copy of the copy, can be considered a form of genera ...

...gnal transmitted over a balanced line. The signal is kept intact while the noise (which appears as a common-mode signal at the receiving end) is rejected pe ...ectromagnetic interference. The balanced interface guarantees that induced noise appears as [[Common-mode signal|common-mode]] voltages at the receiver whic ...

== Various techniques == Various diversity combining techniques can be distinguished: ...

{{Short description|Family of noise reduction systems}} ...Logo 2.svg|thumb|right|The logo represents both the company and its noise reduction system]] ...

{{Short description|Visible interference in an image}} {{broader|Image quality}} ...

[[Image:Photobleaching.ogv|right|thumb|'''Photobleaching:''' The movie shows photob ...empt to quench [[autofluorescence]]. This can help improve the [[signal-to-noise ratio]]. ...

...dent and independent variables|explanatory variable]]s used in statistical techniques such as [[linear regression]]. ...e used in machine learning algorithms. This can be done using a variety of techniques, such as one-hot encoding, label encoding, and ordinal encoding. ...

{{Short description|Line of noise-reduction systems for audio-tape recording}} |name = Dolby noise-reduction system ...

...ad-related transfer function]] or HRTF filters and cross talk cancellation techniques) to mimic natural sounds waves, which emanate from a point in a 3-D space. [[Image:Hrir binaural synthesis.png|thumb|200px|right|A sound is placed in the hori ...

...dy discernible but recovering the shadows in post-production will increase noise.]] ...y discernible and the flowers are fully recoverable in post-production.|An image exposed to the right (+1&nbsp;[[Exposure value|EV]]) and its histogram. Det ...

...rlap between images, usually two channels in a multidimensional microscopy image recorded at different emission wavelengths. A popular approach was introduc ...c'' 6:1554-1567.]</ref> Careful image restoration by deconvolution removes noise and increases contrast in images, improving the quality of colocalization a ...

{{short description|Changing the resolution of a digital image}} [[File:2xsai example.svg|frame|An image scaled with nearest-neighbor scaling (left) and [[2×SaI]] scaling (right)]] ...