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2. Noise-canceling microphone - Wikipedia

   en.wikipedia.org/wiki/Noise-canceling_microphone

   The internal electronic circuitry of an active noise-canceling mic attempts to subtract noise signal from the primary microphone. The circuit may employ passive or active noise canceling techniques to filter out the noise, producing an output signal that has a lower noise floor and a higher signal-to-noise ratio.

3. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   Active noise control ( ANC ), also known as noise cancellation ( NC ), or active noise reduction ( ANR ), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in ...

4. Echo suppression and cancellation - Wikipedia

   en.wikipedia.org/wiki/Echo_suppression_and...

   Echo suppression and echo cancellation are methods used in telephony to improve voice quality by preventing echo from being created or removing it after it is already present. In addition to improving subjective audio quality, echo suppression increases the capacity achieved through silence suppression by preventing echo from traveling across a ...

5. The best deals to shop during Walmart's weekly sale ... - AOL

   www.aol.com/lifestyle/the-best-deals-to-shop...

   Carote Kitchen Knife Set, 12-Piece. $18 $73. Save $55 with coupon. We love the neutral colors of this eye-catching knife set, which includes an 8-inch chef's knife, an 8-inch bread knife, an 8 ...

6. Walmart is still dropping new Black Friday deals — some for ...

   www.aol.com/lifestyle/walmart-black-friday-deals...

   Shop Walmart's Black Friday Deals which include AirPods, ... Skullcandy Hesh ANC Noise Canceling on-Ear Wireless Headphones. $99 $129. Save $30. ... which has a new selection of on-sale items. We ...

7. Shopping for noise-cancelling headphones? Here’s ... - AOL

   www.aol.com/lifestyle/shopping-noise-cancelling...

   Save on Beats, Bose and more. The post Shopping for noise-cancelling headphones? Here’s where to buy a top-rated pair on sale this week appeared first on In The Know.

8. Adaptive feedback cancellation - Wikipedia

   en.wikipedia.org/wiki/Adaptive_feedback_cancellation

   Adaptive feedback cancellation originated during the evolution of the hearing aid. The hearing aid became digital, and as such feedback cancellation was needed. In 1980 a directional microphone was introduced in the digital hearing aid, and adaptive feedback cancellation was created to block external noise that the microphone picked up. Today ...

9. What 'secret' loudspeaker codes mean at department stores - AOL

   www.aol.com/news/2010-10-13-what-secret...

   If you've been shopping in a big box retail store you've probably heard an announcement on the loudspeaker such as, "code yellow toys, code yellow toys." This "code" is one of many innocuous ...