ABEL, S. M.; SPENCER, D. L. Active Noise Cancellation vs. Passive Sound Attenuation: Help or Hindrance?. Canadian Acoustics, [S. l.], v. 23, n. 3, p. 23–24, 1995. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/925. Acesso em: 18 apr. 2024.