FRØKJÆR-JENSEN, B. Changes in Formant Frequencies and Formant Levels at High Voice Effort. Annual Report of the Institute of Phonetics University of Copenhagen, [S. l.], v. 1, p. 47–55, 1967. DOI: 10.7146/aripuc.v1i.130542. Disponível em: https://tidsskrift.dk/ARIPUC/article/view/130542. Acesso em: 28 apr. 2024.