STEENEKEN, H.J. M.; VERHAVE, J. Digitally controlled active noise reduction with integrated speech communication. Archives of Acoustics, [S. l.], v. 29, n. 3, 2004. Disponível em: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/489. Acesso em: 28 apr. 2025.