[2] Rong Gong, Xavier Serra, “Identification of potential Music Information Retrieval technologies for computer-aided jingju singing training”, China conference on sound and music technology 2017, Suzhou, China, 2017.
[3] Terry Tan, “Singing Evaluation based on Deep Metric Learning”, Proceedings of the 2019 3rd International Symposium on Computer Science and Intelligent Control (ISCSIC 2019), September, 2019, pp. 1–5.