Background
Since the first days of telephony, noise became an integral part of communication. Modern life caused the problem of ambient noise during phone calls to be even more acute than before. There are several reasons for this, like:
1. Mobility. Today people make calls from almost every location: street, road.. and even from the toilette.
2. Home office. People tend to make many phone calls from their home. Usually the home office suffers from high ambient noise originated from: other people, kids, television, pets, etc.
3. Open space & Call centers. In both cases, phone calls tend to suffer from a noisy environment.
