Speaker System Blocks City Noise
Share this on WhatsApp Restaurants, schools, dentist offices are all keeping more windows open, to increase ventilation—and hopefully, to decrease the chances of encountering the coronavirus. But letting in fresh air also lets in more noise. Now, researchers have come up with a device that’s like noise-cancelling headphones—but for a building. “It works on the … Continue reading Speaker System Blocks City Noise
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