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VIDEO: Scientists in Singapore have invented a system that uses the same technology as noise-cancelling headphones to allow residents of crowded cities to keep their windows open while reducing the din pic.twitter.com/wrik2Wqm9O
— AFP News Agency (@AFP) September 11, 2020
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https://twitter.com/KittySn52889207/status/1304340480230973440?s=19
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VIDEO: Scientists in Singapore have invented a system that uses the same technology as noise-cancelling headphones to allow residents of crowded cities to keep their windows open while reducing the din pic.twitter.com/wrik2Wqm9O
— AFP News Agency (@AFP) September 11, 2020
weehingthong 