Girika, Jyoshna, and Md Zia Ur Rahman. “Sign Regressor Based Normalized Adaptive Filters for Speech Enhancement Applications”. International Journal of Engineering and Technology 7, no. 2.17 (April 15, 2018): 79–84. Accessed February 25, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/11563.