6 reasons why we should process urban noise ?why is it so important ?

Significance:Urban Noise as a Threat: Negative Impacts 

Noise is an underestimated threat that can cause a number of short- and long-term health problems, such as for example sleep disturbance, 
cardiovascular effects, 
poorer work and 
school performance,
 hearing impairment,
 aggression,
restlenesness,
unrest,
violence
etc.

Identifying the Issues due to the alarming increase of Urban Noise:

Coronary heart disease caused 101,000 deaths in the UK in 2006, and the study suggests that 3,030 of these are caused by chronic noise exposure, including to daytime traffic.  Extinction of bird community in the urban scenario due the rising threat of urban noise .
How many people are affected?
1.about 40% of the population in EU countries is exposed to road traffic noise at levels exceeding 55 db(A)
2. 20% is exposed to levels exceeding 65 dB(A) during the daytime; and
more than 30% is exposed to levels exceeding 55 dB(A) at night.

3. At least 15% of adults have permanent hearing damage due to noise exposure in US
4.In 2005-2006, 20% of US adolescents 12 to 19 years old had some degree of hearing loss. This is up from 15% as measured in 1988-1994.

 5.2% of all deaths from heart attacks in western Europe are caused by exposure to environmental noise. Source: WHO

6'.Areas near Heathrow with the highest levels of aircraft noise, for example, have a 24% increased incidence of hospital admissions due to stroke, a 21% increase for coronary heart disease and a 14% increase for cardiovascular disease compared with areas exposed to the lowest levels.

why ?need ?
In architecture attention is usually focused towards the visual awareness of space. Without listening, perception remains limited in individual experience; we are less connected to "here and now"; to our world; to a specific space.