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2. The best noise-canceling earbuds for 2024 - Engadget

   www.engadget.com/best-noise-canceling-earbuds...

   Whether it’s blocking the noises of your daily train ride, trying to be productive at a coffee shop or just needing to tune out the world for a while, noise-canceling earbuds can provide solace.

3. Pixel Buds Pro review: Google’s best earbuds yet - Engadget

   www.engadget.com/google-pixel-buds-review...

   For the third year in a row, the company has new true wireless earbuds, but this time it added a key feature: active noise cancellation (ANC). With the Pixel Buds Pro ($200), Google finally has ...

4. The best wireless headphones for 2024: Bluetooth options for ...

   www.engadget.com/best-headphones-wireless...

   AirPods Max. Apple’s AirPods Max are premium, well-designed over-ear headphones that incorporate all of the best features you find on standard AirPods: solid noise cancelation, spatial audio and ...

5. Equal-loudness contour - Wikipedia

   en.wikipedia.org/wiki/Equal-loudness_contour

   An equal-loudness contour is a measure of sound pressure level, over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. [1] The unit of measurement for loudness levels is the phon and is arrived at by reference to equal-loudness contours. By definition, two sine waves of differing ...

6. Absolute threshold of hearing - Wikipedia

   en.wikipedia.org/wiki/Absolute_threshold_of_hearing

   Absolute threshold of hearing. The absolute threshold of hearing (ATH), also known as the absolute hearing threshold or auditory threshold, is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the ...

7. Hearing range - Wikipedia

   en.wikipedia.org/wiki/Hearing_range

   Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies ...