Judgement of the National Green Tribunal (Eastern Zone Bench, Kolkata) in the matter of Sukumar Ballav & Others Vs Union of India & Others dated 19/11/2015 regarding use of microphones/amplifiers for religious functions during the holy Ramjan month.
Links:
[1] http://admin.indiaenvironmentportal.org.in/content/judgement-national-green-tribunal-regarding-use-microphonesamplifiers-religious-functions
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/religious-places
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/24-parganas-n
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal
[6] http://admin.indiaenvironmentportal.org.in/thesaurus/national-green-tribunal-ngt
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/court