Okoli S. T. O., O. A. S., and M. U. R. W. & Ajayeoba A. O. “Noise Level Investigation and Control of Household Electric Power Generator”. COVENANT JOURNAL OF ENGINEERING TECHNOLOGY, vol. 2, no. 1, June 2018, https://journals.covenantuniversity.edu.ng/index.php/cjet/article/view/898.