Your choices for filtering the sounds around you are typically quite limited: you either have to drown it out (such as through earplugs or headphones) or let all the annoyances in. Doppler Labs might soon have a way to be more selective, though. Its crowdfunded Here Active Listening earbuds are meant solely to control what you hear in the real world. You not only decide how much gets through, but how it gets through. There's an equalizer if you want to tweak certain sound frequencies (toning down the bass at a badly-mixed concert, for example), and there are preset filters designed to tune out common noises or add effects. Want to silence the background hum of your office without completely shutting out your coworkers? You probably can.