LIU, Lin-li; PANG, Yi; HU, Zhuang-li. Application of Spectrogram Analysis in Traditional Vocal Music Teaching and Multimedia Animation Vocal Music Teaching. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 11, n. 11, p. pp. 64–67, 2016. DOI: 10.3991/ijet.v11i11.6242. Disponível em: https://online-journals.org/index.php/i-jet/article/view/6242. Acesso em: 9 may. 2024.