Street noise gets in the way. Why can’t we use existing noise-cancelling technology in spaces vs headphones?
A system of microphones and speakers that minimize the noise coming from the outside. E.g. road noise when you are in a car, or street noise when you open the windows. The microphone(s) system would “listen” to the sources of white noise and send the information to the speakers, existing or added, to add noise with reversed frequency, which will remove the street/road noise from the user.