Spatial and Temporal Variations of Noise Level at Oja Oba Market Ibadan, Southwestern Nigeria

IJEP 42(10): 1208-12015 : Vol. 42 Issue. 10 (October 2022)

O.S. Olaniyan*, A.A. Adegbola, O.T. Oyedele and O.M. Oyewale

Ladoke Akintola University of Technology, Department of Civil Engineering, Faculty of Engineering and Technology, Ogbomoso, P.M.B. 4000, Nigeria


Noise pollution is one of the major problems facing the modern world at large due to economic growth, industrialization and uncontrolled urbanization. Exposure to high noise pollution levels has physiological (auditory) and psychological effects. The project aims to determine variations in noise level and pollution produced within the Oja Oba area in Ibadan, Oyo state, Nigeria. The environmental equivalent noise levels (Leq) were measured at 12 randomly selected spots within Oja Oba market in the morning and afternoon between September and October 2020 using an SW-524 LCD digital sound level meter. The meter was held at about 1.5 m above ground levels and 3 m from the noise source around each spot for 1/4 of an hour before readings were taken to ensure good area coverage, stability and uniformity in measurement. The average noise pollution level (Lnp) was calculated using a standard equation. The standard deviation of disease and area affected by noise pollution were 0.2 and 0.3589, respectively. The equivalent noise level in the market at the 12 selected points for working days and weekends ranged between 70-98 and 68-106 dBA, respectively. The average noise pollution level in the market varied from 87-128 dBA. These equivalent noise levels and average noise pollution for the Oja Oba market were computed. The obtained data can serve as baseline information for noise pollution modelling and control.


Decibel, Noise level, Oja Oba market, Sound level meter, SPSS 20


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