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2. Shop Walmart's secret sale room and save big on brands we ...

   www.aol.com/lifestyle/shop-walmarts-secret-sale...

   Samsung 65" Class S90C Oled 4K Smart TV. $1,597 $3,299 Save $1,702. We couldn't believe it either at first, but it's true — Walmart has slashed $1,700 off this Samsung 65-inch smart TV. Prepare ...

3. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

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   These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...

4. It's on: Walmart just dropped an amazing $99 Black ... - AOL

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   $99 $149 at Walmart On sale for $99 (was $149), the Beats Solo Pro Headphones sync to just about any smartphone or laptop via Bluetooth, delivering rich audio and heart-thumping bass. Super sleek ...

5. Dolby noise-reduction system - Wikipedia

   en.wikipedia.org/wiki/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 audio tape recording. The first was Dolby A, a professional broadband noise reduction system for recording studios in 1965, but the best-known is Dolby B (introduced in 1968), a sliding band system for the consumer market, which helped make high fidelity ...

6. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

7. 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 .