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  2. Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Noise_reduction

    Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio.

  3. Artificial noise - Wikipedia

    en.wikipedia.org/wiki/Artificial_noise

    The strategic deployment of noise by fans, intended to distract opposing teams, became an integral part of sports culture, especially in college football where marching bands played a significant role. The widespread availability of electronic devices capable of generating significant noise levels led sports leagues to regulate artificial noise.

  4. Block-matching and 3D filtering - Wikipedia

    en.wikipedia.org/wiki/Block-matching_and_3D...

    Block-matching and 3D filtering (BM3D) is a 3-D block-matching algorithm used primarily for noise reduction in images. [1] It is one of the expansions of the non-local means methodology. [2] There are two cascades in BM3D: a hard-thresholding and a Wiener filter stage, both involving the following parts: grouping, collaborative filtering, and ...

  5. Total variation denoising - Wikipedia

    en.wikipedia.org/wiki/Total_variation_denoising

    The regularization parameter plays a critical role in the denoising process. When =, there is no smoothing and the result is the same as minimizing the sum of squares.As , however, the total variation term plays an increasingly strong role, which forces the result to have smaller total variation, at the expense of being less like the input (noisy) signal.

  6. Earplug - Wikipedia

    en.wikipedia.org/wiki/Earplug

    Hearing protectors sold in the US are required by the EPA to have a noise reduction rating (NRR), [40] which is an estimate of noise reduction at the ear when protectors are worn properly. Real-ear attenuation at threshold (REAT) measurements are performed multiple times with 10 to 20 subjects to determine the NRR.

  7. Category:Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Category:Noise_reduction

    Noise reduction systems (3 C, 9 P) Pages in category "Noise reduction" The following 21 pages are in this category, out of 21 total. This list may not reflect recent ...

  8. Bath & Body Works forecasts smaller drop in annual sales on ...

    www.aol.com/news/bath-body-works-forecasts...

    (Reuters) -Bath & Body Works on Monday raised its forecast for full-year adjusted profit and projected a smaller drop in annual sales on strong demand for its candles and fragrances during the ...

  9. Image noise - Wikipedia

    en.wikipedia.org/wiki/Image_noise

    The high sensitivity image quality of a given camera (or RAW development workflow) may depend greatly on the quality of the algorithm used for noise reduction. Since noise levels increase as ISO sensitivity is increased, most camera manufacturers increase the noise reduction aggressiveness automatically at higher sensitivities. This leads to a ...

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