Group Attack Dingo Optimizer for enhancing speech recognition in noisy environments T. N. Mahesh Kumar, K. Ganesh Kumar, K. T. Deepak and A. V. Narasimhadhan Eur. Phys. J. Plus, 138 12 (2023) 1145 Published online: 21 December 2023 DOI: 10.1140/epjp/s13360-023-04775-8