[English][Japanese]

Nobutaka Ito

Laboratory #1 Department of Information Physics and Computing
Graduate School of Information Science and Technology The University of Tokyo
7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656 JAPAN
Tel & Fax: +81-3-5841-6902
E-mail: ito@hil.t.u-tokyo.ac.jp

Research Theme Microphone Array Signal Processing Based on Symmetry
  • Microphone array signal processing for diffuse noise suppression
  • Diffuse Noise Robust Localization of Multiple Sources
  • Microphone array signal processing for music signals
    • Personal History
    • 2003.04 Enrolled in The University of Tokyo
    • 2007.03 Graduated from Department of Mathematical Engineering and Information Physics, Faculty of Engineering, The University of Tokyo
    • 2007.04-2009.03 Master student in Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo
    • 2009.03 Received master's degree from Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo
    • 2009.04- Ph.D student in Department of Information Physics and Computing, Graduate School of Information Science and Technology, The University of Tokyo
    • 2009.04- Full-time research assistant in the CREST JST-RA program
    • 2009.9-2010.9 Stay at INRIA Rennes - Bretagne Atlantique, France under supervision of Dr. Emmanuel Vincent and Dr. Remi Gribonval
    • 2010.4 Japan Society for the Promotion of Science (JSPS), Research Fellowships for Young Scientists (DC2)
    Publications
    • Journal Papers
      1. Nobutaka Ito, Hikaru Shimizu, Nobutaka Ono, and Shigeki Sagayama, "Diffuse Noise Suppression Using Crystal-shaped Microphone Arrays," IEEE Trans. ASLP, vol. 19, no. 7, pp. 2101--2110, Sept. 2011. [PDF file (preprint version) on IEEE Xplore]
      2. Nobutaka Ono, Nobutaka Ito, Yosuke Izumi, Shigeki Sagayama, ``On the relationship between separation performance by ideal time-frequency masking and sparseness of sources,'' Journal of IEICE A, to appear. (in Japanese)
      3. Nobutaka Ito, Takaaki Nara, Tetsuya Sakurai, "Image feature extraction based on complex moments," JSIAM, vol. 18, no. 1, pp. 135-153, 2008. (in Japanese) [PDF file on CiNii]
    • Conference Papers
      1. Nobutaka Ito, Emmanuel Vincent, Nobutaka Ono, Remi Gribonval, Shigeki Sagayama, “Crystal-MUSIC: Accurate Localization of Multiple Sources in Diffuse Noise Environments Using Crystal-Shaped Microphone Arrays,” Proc. of LVA/ICA, pp.81-88, Sep. 2010. [PDF file on SpringerLink]
      2. Nobutaka Ito, Nobutaka Ono, Emmanuel Vincent, Shigeki Sagayama, “Designing the Wiener post-filter for diffuse noise suppression using imaginary parts of inter-channel cross spectra,” Proc. of ICASSP, SAM-P5.8, pp.2818-2821, Mar. 2010. [PDF file on IEEE Xplore]
      3. Nobutaka Ono, Hitoshi Kohno, Nobutaka Ito, and Shigeki Sagayama, "Blind alignment of asynchronously recorded signals for distributed microphone array," Proc. WASPAA (IEEE Workshop on Applications of Signal Processing to Audio and Acoustics), pp. 161-164, Oct. 2009. [PDF file on IEEE Xplore]
      4. Yutaka Kamamoto, Noboru Harada, Takehiro Moriya, Nobutaka Ito, Nobutaka Ono, Takuya Nishimoto, and Shigeki Sagayama, "An efficient lossless compression of multichannel time-series signals by MPEG-4 ALS," Proc. ISCE (International Symposium on Consumer Electronics), May 2009. [PDF file on IEEE Xplore]
      5. Nobutaka Ono, Nobutaka Ito, and Shigeki Sagayama, "Five classes of crystal arrays for blind decorrelation of diffuse noise," Proc. SAM (IEEE Sensor Array and Multichannel Signal Processing Workshop), pp. 151-154, Jul. 2008. [PDF file on IEEE Xplore]
      6. Nobutaka Ito, Nobutaka Ono, and Shigeki Sagayama, "A blind noise decorrelation approach with crystal arrays on designing post-filters for diffuse noise suppression," Proc. ICASSP (IEEE International Conference on Acoustics, Speech and Signal Processing), pp. 317-320, Apr. 2008. [PDF file on IEEE Xplore]
      7. Takaaki Nara, Nobutaka Ito, Tomonori Takamatsu, and Tetsuya Sakurai, "Direct computation of harmonic moments for tomographic reconstruction," Journal of Physics: Conference Series, Inverse Problems in Applied Sciences, vol. 73, 012017, 2007. [PDF file]
      8. Takaaki Nara, Nobutaka Ito, Shigeru Ando, Tomonori Takamatsu, and Tetsuya Sakurai, "Direct computation of harmonic moments from projections," The 6th Symposium of Mathematical Aspects of Image Processing and Computer Vision, 2006.
    • Technical Report
      1. Takaaki Nara, Nobutaka Ito, Shigeru Ando, Tomonori Takamatsu, and Tetsuya Sakurai, "Direct computation of harmonic moments for tomographic reconstruction," Mathematical Engineering Technical Reports, The University of Tokyo, 2006-58.
    Theses
    • Bachelor thesis: "Complex moments of images and their projections" (in Japanese)
    • Master's thesis: "Microphone array signal processing for diffuse noise suppression"
    Supervisors