Previously, soundproof windows and heavy curtains were the only ways to keep away loud noises. However, an Austrian industrial designer Rudolf Stefanich has created a 'Sono' device that sticks on windows and turns it into a filter for disruptive noises such as horns and construction work, the Huffington Post reported.
Pleasant sounds like birds chirping can even be allowed to come inside the home with just a turn of a knob.
Source-ANI