Pengcheng Guo received the B.Eng. degree from Northwestern Polytechnical University (NPU), Xi’an, China, in 2016. He is currently working toward the Ph.D. degree in computer science and technology at the Audio, Speech, and Language Processing Group, Shaanxi Provincial Key Laboratory of Speech and Image Information Processing, School of Computer Science, NPU. In 2017, he was a research student with the School of Computer Science and Engineering, Nanyang Technological University. In 2019, he visited the ByteDance AI Lab as an intern. His current research interests include robust automatic speech recognition and end-to-end speech recognition.