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  2. Caloric reflex test - Wikipedia

    en.wikipedia.org/wiki/Caloric_reflex_test

    003429. In medicine, the caloric reflex test (sometimes termed 'vestibular caloric stimulation ') is a test of the vestibulo-ocular reflex that involves irrigating cold or warm water or air into the external auditory canal. This method was developed by Robert Bárány, who won a Nobel prize in 1914 for this discovery.

  3. Head-related transfer function - Wikipedia

    en.wikipedia.org/wiki/Head-related_transfer_function

    HRTF filtering effect. A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space. As sound strikes the listener, the size and shape of the head, ears, ear canal, density of the head, size and shape of nasal and oral cavities, all transform the sound and affect how it is perceived, boosting some frequencies and attenuating others.

  4. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

    www.aol.com/entertainment/20-off-raycon-earbuds...

    These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...

  5. Vortex tube - Wikipedia

    en.wikipedia.org/wiki/Vortex_tube

    Separation of a compressed gas into a hot stream and a cold stream. The vortex tube, also known as the Ranque-Hilsch vortex tube, is a mechanical device that separates a compressed gas into hot and cold streams. The gas emerging from the hot end can reach temperatures of 200 °C (390 °F), and the gas emerging from the cold end can reach −50 ...

  6. How noise cancelling headphones work - AOL

    www.aol.com/news/noise-cancelling-headphones...

    Bose Noise Cancelling Wireless Bluetooth Headphones 700, with Alexa Voice Control is on of the best active noise cancelling headphones in 2021. (Amazon / Amazon) Bose Noise Cancelling Wireless ...

  7. The best wireless headphones for seniors - AOL

    www.aol.com/lifestyle/best-wireless-headphones...

    Quick Overview. More options. Sony WH-1000XM5 Noise-Cancelling Headphones. Best headphones overall. $398 at Adorama. Soundcore Q30 Hybrid Active Noise-Cancelling Headphones. Best budget headphones ...