Inventor Rudolf Stefanich has created a Sono device, which reduces the noise outside the window.
The device is attached to a window and turns it into a huge noise-canceling speaker, which perceives the sounds outside the window and reduces them.
The device has already been given the James Dyson Award. And there is confidence that this solution will be important. It is also believed that the application of this method will not be reduced to producing Sono stickers. Perhaps this technology could be integrated into the window frames in the production stage and then its success could increase significantly.