Yuma Koizumi is a research scientist at Google Research. He received his B.S. and M.S degrees in 2012 and 2014 from Hosei University, Tokyo, respectively, and his Ph.D. degree in 2017 from the University of Electro-Communications, Tokyo. He was with the NTT Media Intelligence Laboratories at Nippon Telegraph and Telephone (NTT), Tokyo between 2014 and 2020. His current research interests are speech enhancement, environmental sound analysis, and automatic speech recognition.