The benefits of sound is a natural way to bring relaxation to the body; using various tones, this therapy aligns brainwaves into a frequency that allows for calm. The healthy benefits of sound healing. And noise pollution or noise disturbance is the disturbing or excessive noise that may harm the activity or balance of human or animal life. The source of most outdoor noise worldwide is mainly caused by machines and transportation systems, motor vehicles, aircraft, and trains. Outdoor noise is summarized by the word environmental noise. Poor urban planning may give rise to noise pollution, since side by side industrial and residential buildings can result in noise pollution in the residential areas.