Ch.Suneetha, et al. “Sparse Coding–Driven Deep Learning for Robust Emotional State Recognition from Multichannel Speech”. Synthesis: A Multidisciplinary Research Journal, vol. 3, no. 4, Dec. 2025, pp. 9-20, https://www.macawpublications.com/Journals/index.php/SMRJ/article/view/212.