Friday, July 21, 2023, 00:00 (GMT+7)
Headphones with active noise cancellation technology can create anti-phase sound waves to cancel out outside noise, helping users concentrate better.
Video: Interesting Engineering
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The Sophisticated Technology Behind Noise Cancelling Headphones
VnExpress•21/07/2023![[Photo] "Beauties" participate in the parade rehearsal at Bien Hoa airport](https://vstatic.vietnam.vn/vietnam/resource/IMAGE/2025/4/11/155502af3384431e918de0e2e585d13a)
![[Photo] Looking back at the impressive moments of the Vietnamese rescue team in Myanmar](https://vstatic.vietnam.vn/vietnam/resource/IMAGE/2025/4/11/5623ca902a934e19b604c718265249d0)
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![[Photo] Summary of parade practice in preparation for the April 30th celebration](https://vstatic.vietnam.vn/vietnam/resource/IMAGE/2025/4/11/78cfee0f2cc045b387ff1a4362b5950f)
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