PeerJ Author 270 Points Contributions by role Author 270 Contributions by subject area Artificial Intelligence Data Science Natural Language and Speech Computational Linguistics Ammar Amjad PeerJ Author Summary Artificial Intelligence Computational Linguistics Data Science Natural Language & Speech Past or current institution affiliations Chang Gung University Work details Ph.D Scholar Chang Gung University Computer Science and Information Engineering Ph.D Scholar Websites Google Scholar PeerJ Contributions Articles 2 August 3, 2022 Data augmentation and deep neural networks for the classification of Pakistani racial speakers recognition Ammar Amjad, Lal Khan, Hsien-Tsung Chang https://doi.org/10.7717/peerj-cs.1053 November 3, 2021 Effect on speech emotion classification of a feature selection approach using a convolutional neural network Ammar Amjad, Lal Khan, Hsien-Tsung Chang https://doi.org/10.7717/peerj-cs.766