IoT-based sound-level control for audio amplifiers: Mosques as a case study

Naeem Al-Oudat


Many contests and gatherings in the open, where audio-amplifiers are used, suffer from uneven distribution of sound along the place. At some points, sound is very loud that makes people unpleasant. In other places, sound is somewhat weak that is barely heard and understood. This unfortunate situation arises because audio-amplifiers volumes are set according to the guess of sound technicians. When sound sources (audioamplifiers in this context) fire the same sound, the level at each source should be carefully set to cover all the targeted areas so that people is happy. Mosque, for example, are distributed inside wide areas and fire Azan five times a day. Due to the relatively long distances between them, the environment conditions (in particular wind speed and direction) impose setting sound levels prior to each Azan such that all the area is covered and the overlap is minimized. In this paper, we propose using IoT devices, one in each mosque, to set the level of sound fired from these mosques. To do that, a synchronized series of tones is fired from each node. In the nodes that can hear these tones, the process of sound level control starts to indicate the distances between them. As the approximate distances between nodes are known, each node can calculate its suitable sound level. Consequently, we propose a system based on IoT model to control the sound level of each mosque in the community. Results showed that the proposed system is effective in setting sound levels for mosques audio amplifiers.


azan level control; FFT for Masjids; IoT for Masjids; nodes distance by sound; sound-level control;


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International Journal of Electrical and Computer Engineering (IJECE)
p-ISSN 2088-8708, e-ISSN 2722-2578