Heiga Zen received his AE from Suzuka National College of Technology (, Suzuka, Japan, in 1999, and PhD from the Nagoya Institute of Technology (, Nagoya, Japan, in 2006. Before joining Google in 2011, he was an Intern/Co-Op researcher at the IBM T.J. Watson Research Center, Yorktown Heights, NY (2004--2005), and a Research Engineer at Toshiba Research Europe Ltd. Cambridge Research Laboratory, Cambridge, UK (2008--2011). His research interests include statistical speech synthesis and recognition. He was one of the original authors and the first maintainer of the HMM-based speech synthesis system, HTS (