4 de setembro de 2016
Loudspeakers were invented in the early 1900s, and they were introduced in mosques in the 1930s, where they are used for the adhan("call to prayer"), and sometimes for khutbah (sermons).
Outdoor loudspeakers, usually mounted on tall minarets, are used five times a day for the call to prayer, sometimes starting as early as 4 a.m. Some mosques have loudspeakers that are powerful enough to be heard as far as 5 km (3 mi) away.In areas where more than one mosque is present, the loudspeaker sounds overlap one another, especially in the early morning when sounds are more clearly heard. Loudspeakers are sometimes also used inside mosques to deliver sermons or for prayer.
Indonesia, the world's most populous Muslim nation, has recognized that the overzealous use of sound amplification by its many mosques is an environmental issue and appears to be taking official measures to curb the problem.
In India, some anti-noise pollution activists have called for restricting the use of loudspeakers, arguing that religion is not a ground to violate noise rules. In 1999, in debating a proposed blanket ban on loudspeakers atop mosques, some political leaders in India alleged that loudspeakers had been used to create communal tension, and that they had been used to incite a riot in Nandurbar, Maharashtra state, on November 10, 1999.
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