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Jbl Trip Wireless Bluetooth Speaker Mini Car Portable Speakers Travel Driving Music Speaker Sound Noise Cancelling Outdoor - Speakers - AliExpress
Would it be feasible to quiet an outdoor deck by using noise-cancelling headphone circuitry but outputting the result through loudspeakers? - Quora
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Amazon.com: Kunodi Outdoor Waterproof Bluetooth Speaker, Wireless Portable Mini Shower Travel Speaker with Subwoofer, Enhanced Bass, Built in Mic for Sports, Pool, Beach, Hiking, Camping (Black) : Electronics
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