- 1988. 2, B.S. in Seoul Nat\'l Univ. Dept. EE
- 1990. 2, M.S. in KAIST Dept. EE
- 1994. 8, Ph.D. in KAIST Dept. EE

- 1993-1998, Samsung Advanced Institute of Technology, Researcher
- 1998년- , Seoul Nat\'l Univ., Professor

- Speech Recognition
- Speech Coding and Enhancement
- Speech Synthesis