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2. Best noise-canceling headphones, according to Consumer Reports

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   Sennheiser PXC 550-II $289.99 at Amazon. Sennheiser PXC 550-II $299.99 at Walmart. True Wireless Sony WF-1000XM4. The WF-1000XM4 is the latest in Sony’s line of noise-canceling true wireless ...

3. 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 .

4. These are the only Amazon deals worth shopping this ... - AOL

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   Of course, if you want the home theater experience, this behemoth is down to a record-low $400 and boasts 4K Ultra HD visuals, DTS Studio Sound and an Alexa Voice Remote. Movie night at your house!

5. 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.

6. 55 Cool Tech Gadgets Our Gear Editors Loved Testing This Year

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   Fit Pro True Wireless Noise Cancelling Earbuds ... Bowers & Wilkins Px7 S2e Over Ear Headphones. amazon.com. ... But when we want serious audio and even more serious noise-cancellation for ...

7. Zoom H4 Handy Recorder - Wikipedia

   en.wikipedia.org/wiki/Zoom_H4_Handy_Recorder

   The H4 is shorter than a pencil Field recording with H4 on a simple tripod H2 and H4 with 10 eurocents for scale. The H4 Handy Recorder is a handheld digital audio recorder from Zoom, featuring built-in condenser microphones in an X-Y stereo pattern, [1] priced from around US$280 depending upon memory capacity as of 2011.