PEPPIN, R. J. Measuring with sound level meters: The real difference between type 1 and type 2. Canadian Acoustics, [S. l.], v. 32, n. 3, p. 92–93, 2004. Disponível em: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1643. Acesso em: 20 apr. 2024.