As well as operating year-round on Friday afternoons, the loudspeakers were in action from 11.30 pm each night until past 1 am during the Islamic holy month so as to allow Muslims praying on the streets outside, due to lack of space in the mosque, to hear.

“The loudspeaker is so intense,” a resident told Le Parisien. “We hear prayers, songs and readings delivered in a fashion that is completely disrespectful of people who follow other religions, and atheists.

“Some nights it is impossible to get more than four hours sleep because even after the prayers end, the faithful then engage in discussions which can last for another two hours.”
https://www.jihadwatch.org/2017/06/p...e-loudspeakers

And whoever understands Arabic will know that the "discussions" are of how much they're getting from the government, and where to attack next.