The neighbourhoods of hospitals are declared as silence zones so that patients receiving treatment are not disturbed.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/silence-evades-silence-zones-india
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-line-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chennai-t
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mumbai
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution-control
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmental-security
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment