Fernandes, V. L.; Veloso Campos, M.; Souza, L. H. de; Inácio, M. J.; Alves Maia, N.; Santos Maciel, R.; Souza Veloso, D. E. Implementation of a Filter for Active Noise Cancellation in Earmuffs for Agricultural Tractor Operations. Int J Innov Educ Res 2022, 10 (8), 24-32. https://doi.org/10.31686/ijier.vol10.iss8.3853.