Akanksha Singh, S. Kolangiammal, K. Chaitanya, and P.G. Vinay. “Designing and Spontaneous Recognition of Acquired Speech Signals”. International Journal of Advance Research in Engineering, Science & Technology, vol. 5, no. 5, May 2018, pp. 58-65, https://ijarest.org/index.php/ijarest/article/view/1668.