Naotoshi Osaka is an acoustics researcher and a composer. He received M.S. degree in electrical engineering from Waseda University in 1978. He worked at the Electric Communication Laboratories, NTT, Tokyo, Japan, from 1978 to 2003. He has been engaged in telephone transmission performance estimation, human speech communication and currently in sound synthesis for computer music. He is a professor at Tokyo Denki University. He received a Doctor of Engineering in 1994. He founded JSSA (Japanese Society for Sonic Arts) and a former president. He is a member of ASJ, IPSJ, IEICE, JSSA, ICMA and IEEE.