Toward an emotion efficient architecture based on the sound spectrum from the voice of Portuguese speakers - Rocha Filho, Geraldo Pereira; Meneguette, Rodolfo Ipolito; Mendonça, Fabio Lucio Lopes de; Enamoto, Liriam Michi; Pessin, Gustavo; Gonçalves, Vinicius Pereira (Neural Computing and Applications, 2024)