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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

3. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Simplified graphical depiction of active noise reduction. To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control or ANC.A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds.

4. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   Several commercial applications have been successful: noise-cancelling headphones, active mufflers, anti-snoring devices, vocal or center channel extraction for karaoke machines, and the control of noise in air conditioning ducts. The term "1-dimension" refers to a simple pistonic relationship between the noise and the active speaker ...

5. Sports News & latest headlines from every league - AOL.com

   www.aol.com/sports

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Marshall Amplification - Wikipedia

   en.wikipedia.org/wiki/Marshall_Amplification

   A 3 × 6 stack of Marshall ModeFour guitar cabinets on the main stage of Tuska Open Air Metal Festival in 2008. This setup belonged to Jeff Hanneman of Slayer.. Marshall Amplification is a British company that designs and manufactures music amplifiers and speaker cabinets.

7. Disneyland - Wikipedia

   en.wikipedia.org/wiki/Disneyland

   Disneyland is a theme park at the Disneyland Resort in Anaheim, California.It was the first theme park opened by the Walt Disney Company and the only one designed and constructed under the direct supervision of Walt Disney, and opened on July 17, 1955.