Ferreira Netto, Waldemar, Marcus Vinícius Moreira Martins, and Maressa de Freitas Vieira. 2015. “Effects of Pitch and Duration in the Automatic Analysis of Emotional Expressions”. Estudos Linguísticos (São Paulo. 1978) 43 (01):22-32. https://revistadogel.emnuvens.com.br/estudos-linguisticos/article/view/417.