Cha, Junseo, Seong Hee Choi, and Chul-Hee Choi. 2021. “Can a Natural Singing Voice Be Enhanced through Digital Processing? Implications of Voice Training and Vocology in Singers”. Revista De Investigación E Innovación En Ciencias De La Salud 3 (2): 72-86. https://doi.org/10.46634/riics.119.