Portrait of Kazuhito Koishida

Kazuhito Koishida

Principal Lead Scientist

About

I am a Principal Lead Scientist at Applied Science Group in Windows and Device Group. I have been with Microsoft since 2000. My area of interests is in signal processing and machine learning for audio, speech, and other sensor data.

Past projects

  • Audio and voice compression: Bitrate/bandwidth scalable codec, MELP codec at 1.2kbps, and Windows Media Audio and Voice codec.
  • Audio matching:┬áVoice note application and music recognition service.
  • Microphone array processing: Beamforming and sound source localization.
  • Audio/voice detection and recognition: Keyword spotting and speaker verification.

Education

  • B.S degree in Electrical Engineering from the Tokyo Institute of Technology, Japan, in 1994.
  • M.S. degree in Electrical Engineering from the Tokyo Institute of Technology, Japan, in 1995.
  • Ph.D. degree in Electrical Engineering from the Tokyo Institute of Technology, Japan, in 1998. Dissertation title: Speech Coding Based on Mel-Generalized Cepstral Analysis.
  • Post doctoral researcher at Signal Compression Lab in the University of California, Santa Barbara, 1998-2000.