Hassan, Kazi Mahmudul, Md. Ekramul Hamid, and Takayoshi Nakai. “An Improvement in Representation of Audio Signal in Time-Frequency Plane Using EMD-2TEMD Based Approach”. Rajshahi University Journal of Science and Engineering 44 (November 19, 2016): 141–150. Accessed September 13, 2025. https://www.banglajol.info/index.php/RUJSE/article/view/30399.