1. Savee dataset, 10 December 2020. http://kahlan.eps.surrey.ac.uk/savee/Download.html
2. Sjtu Chinese emotional dataset, 12 December 2020. https://bcmi.sjtu.edu.cn/home/seed/
3. Emo-db dataset, 15 December 2020. http://emodb.bilderbar.info/docu/
4. How to make a speech emotion recognizer using python, 26 December 2020. https://www.thepythoncode.com/article/building-a-speech-emotion-recognizer-using-sklearn
5. Ravdess dataset, 5 December 2020. http://zenodo.org/record/1188976