Dial it Down: Prototype Noise-Cancelling Device for City Street Sounds Posted by almightyish on Sunday November 24, 2013 @11:09PM from the weburbanist.com dept. http://weburbanist.com/2013/11/24/dial-it-down-noise-cancelling-device-for-city-street-sounds/ ( no comments | 2 points | on HN )
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