Night-Time Decibel Hell: Mapping Noise Exposure Zones and Individual Annoyance Ratings in an Urban Environment in Ghana

Table 3

Night-time noise exposure levels, dose for mosques, and risk of hearing loss in neighbourhoods.

Neighbourhood	Location	Noise level dB(A)*			Dose (%)			8-hour equivalent exposure level	Risk of noise-induced hearing loss
		Source	50 m	100 m	source	50 m	100 m
Taifa	Green and Cream Mosque	93.6	76.8	68.6	226.4%	4.7%	0.7%	88.5	Significant risk
Zongo Laka	White and Green Mosque	93.8	85.6	75.2	237.1%	35.9%	3.3%	88.7	Significant risk
	Yellow Mosque	85.6	81.2	72.6	35.9%	13.0%	1.8%	80.5	Some risk
Night Market	White and Green Mosque	84.4	76.2	64.2	27.2%	4.1%	0.3%	79.3	Minimal risk
	White Mosque (uncompleted)	85.4	75.6	64.6	34.3%	3.6%	0.3%	80.3	Some risk
	Cream and Green Mosque	90.2	77.4	64	103.5%	5.4%	0.2%	85.1	Significant risk
	Equivalent noise exposure level	93.2	83.3	73.2	664.30%	66.80%	6.60%

∗Measurement time per location is 15 minutes and total exposure time is 1.5 hours for the mosques.