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

    www.aol.com/news/best-noise-canceling-headphones...

    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. Acoustical measurements and instrumentation - Wikipedia

    en.wikipedia.org/wiki/Acoustical_measurements...

    Dynamic range is a measure of how small you can measure a signal relative to the maximum input signal the device can measure. Expressed in decibels, the dynamic range is 20 log (Vmax/Vmin). For example, a device with an input range of ±10 V and a dynamic range of 110 dB will be able to measure a signal as small as 10 μV.

  4. Sound level meter - Wikipedia

    en.wikipedia.org/wiki/Sound_level_meter

    A noise dosimeter (American) or noise dosemeter (British) is a specialized sound level meter intended specifically to measure the noise exposure of a person integrated over a period of time; usually to comply with Health and Safety regulations such as the Occupational Safety and Health (OSHA) 29 CFR 1910.95 Occupational Noise Exposure Standard ...

  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. [1] The first was Dolby A, a professional broadband noise reduction system for recording studios that was first demonstrated in 1965, but the best-known is Dolby B (introduced in 1968), a sliding band system for the consumer market ...

  6. Over 19,000 Amazon Reviewers Are Buzzing About This White ...

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    White Noise Machine. amazon.com. ... This popular pick on Amazon has almost 10,000 reviews and 4.5 stars, for good reason. While they weren't tested in the GH labs, the reviews, ratings and ...

  7. Our Favorite Editor-Recommended Noise-Cancelling ... - AOL

    www.aol.com/lifestyle/favorite-editor...

    Take up to $100 off the best-selling earbuds and over-ear noise-cancelling headphones from Sony, Beats, Bose, and Apple this Amazon Prime Day.

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