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2. Amazon Echo Buds - Wikipedia

   en.wikipedia.org/wiki/Amazon_Echo_Buds

   Amazon Echo Buds; Developer: Amazon: Product family: Echo: Type: Wireless earbuds: Release date: October 30, 2019 () Input: Echo Buds (each) Dual external beam-forming microphones, single internal microphone, accelerometer, proximity, touch: Connectivity: Echo Buds (each) Bluetooth Charging Case micro-USB port: Dimensions: Echo Buds (each) 22 x ...

3. Equal-loudness contour - Wikipedia

   en.wikipedia.org/wiki/Equal-loudness_contour

   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.

4. Hearables - Wikipedia

   en.wikipedia.org/wiki/Hearables

   Sensors, to track heart rate, cadence, or to detect proximity. Microphones, to take or make phone calls, or take voice commands. Most of the "Hearables" seen to date are Bluetooth devices that use phones or PCs as the central computing unit. Vinci smart headphones, announced in 2016, [5] incorporated a dual-core CPU, local storage, Wi-Fi, and ...

5. Amazon’s Best-Selling Echo Earbuds Are Just $34 Right ... - AOL

   www.aol.com/amazon-stylish-echo-earbuds-just...

   Now, these same Echo Buds are back in an all-new package for 2023 … They were smaller, lighter and more comfortable than the company’s first go at wireless earbuds, for a fraction of the cost ...

6. Do you know your earbuds' IP rating? - AOL

   www.aol.com/news/know-earbuds-ip-rating...

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7. Echocardiography - Wikipedia

   en.wikipedia.org/wiki/Echocardiography

   Echocardiography, also known as cardiac ultrasound, is the use of ultrasound to examine the heart. It is a type of medical imaging, using standard ultrasound or Doppler ultrasound. [ 1] The visual image formed using this technique is called an echocardiogram, a cardiac echo, or simply an echo . Echocardiography is routinely used in the ...