1. Associate Editor (AE) for IEEE Trans. Circuits and Systems II: Express Briefs (Jan. 2012 --- Dec. 2013)
  2. Editorial Board Member of Signal Processing (Elsevier's Journal, Apr. 2009 --- Mar. 2012)
  3. Associate Editor (AE) for Special Issue on DSP, IEICE (Aug. 2003)
  4. Associate Editor (AE) for Special Issue on Smart Signal Processing, IEICE (Nov. 2005)
  5. IEEE CAS Society's DSP Technical Committee (TC) Member (May 2006 --- Dec. 2014)
  6. IEICE CAS Technical Committee (TC) Member, Japan (May 2009 --- Mar. 2012)
  7. --------------------------------------------------------------------------------------------------------------------------------------
  8. International Conference IEEE ECTI-CON 2017 (Session Chair)
  9. International Conference ICDIP 2017 (Session Chair)
  10. International Conference ICMIP 2017 (Session Chair)
  11. International Conference ICCIP 2016 (Session Chair)
  12. International Conference IEEE ICIAS 2016 (Session Chair)
  13. International Conference IEEE ECTI-CON 2016 (Session Chair)
  14. International Conference IEEE ICSSA 2015 (Session Chair)
  15. International Conference ACIIDS 2015 (Session Chair)
  16. International Conference HKICEAS 2014 (Session Chair)
  17. International Conference IEEE TENCON 2014 (Session Chair)
  18. International Conference IEEE FSKD 2014 (Session Chair)
  19. International Conference IEEE ISSNIP 2014 (Session Chair)
  20. International Conference IEEE ICIT 2014 (Session Chair)
  21. International Conference IEEE MICC 2013 (Session Chair)
  22. International Conference IEEE ICCAS 2013 (Korea, Session Chair)
  23. International Conference IEEE ISCIT 2013 (Session Chair)
  24. International Conference IEEE SSCI 2013 (Session Chair)
  25. International Conference IEEE ISCIT 2012 Technical Program Committee (TPC) Member
  26. International Conference ICESIT 2012 Special Session Chair
  27. International Conference IEEE ISCIT 2011 Technical Program Committee (TPC) Member
  28. International Conference IEEE ISCAS 2011 Review Committee Member (RCM)
  29. International Conference IEEE ICC 2011 Technical Program Committee (TPC) Member
  30. International Conference IEEE ICICS 2011 (Session Chair)
  31. International Conference ICT 2010 (Publicity Chair)
  32. International Conference IEEE ICGCS 2010 (Special Session Organizer and Session Chair)
  33. International Conference IEEE ICGCS 2010 Technical Program Committee (TPC) Member
  34. International Conference IEEE ISCIT 2010 Technical Program Committee (TPC) Member
  35. International Conference IEEE ISCAS 2010 (Session Chair)
  36. International Conference IEEE ISCIT 2009 Technical Program Committee (TPC) Member
  37. International Conference IEEE ISCIT 2009 (Session Chair)
  38. International Conference ITC-CSCC 2009 (Session Chair)
  39. International Conference IEEE ISPACS 2008 Technical Program Committee (TPC) Member
  40. International Conference IEEE ISPACS 2008 (Session Chair)
  41. International Conference IEEE ISCIT 2008 Technical Program Committee (TPC) Member
  42. International Conference IEEE ISCIT 2008 (Session Chair)
  43. International Conference IEEE ISCAS 2008 Review Committee Member (RCM)
  44. International Conference IEEE ISCAS 2008 (Session Chair)
  45. International Conference IEEE ICCCAS 2008 Track Chair for MSPC
  46. International Conference IEEE ISCAS 2007 Review Committee Member (RCM)
  47. International Conference IEEE ISPACS 2007 Technical Program Committee (TPC) Member
  48. International Conference IEEE ISCIT 2007 Technical Program Committee (TPC) Member
  49. International Conference ITC-CSCC 2006 (Session Chair)
  50. International Conference IEEE ISCIT 2006 Technical Program Committee (TPC) Member
  51. International Conference IEEE ISCIT 2006 (Session Chair)
  52. International Conference IEEE APCCAS 2006 Technical Program Committee (TPC) Member
  53. International Conference IEEE APCCAS 2006 (Session Chair)
  54. International Conference IEEE ISCIT 2005 (Session Chair)
  55. International Conference NCSP 2004 (Session Chair)
  56. International Conference IEEE MWSCAS 2004 (Session Chair, Special Session Organizer)
  57. International Conference IEEE ISCIT 2004 (Special Session Chair)
  58. International Conference IEEE ISCIT 2003 (Session Chair)
  59. International Conference IEEE ISCAS 2003 (Session Chair, Special Session Organizer)
  60. International Conference IEEE ICICS 2003 (Session Chair)
  61. International Conference IEEE ISPACS 2003 (Session Chair)
  62. International Conference ITC-CSCC 2002 (Session Chair)
  63. International Conference ITC-CSCC 2001 (Session Chair)
  64. International Conference IEEE ICICS 2001 (Session Chair)
  65. International Conference IEEE ICICS 2001 (Session Chair)
  66. International Conference IEEE ISCIT 2001 (Session Chair)
  67. International Conference IEEE ISPACS 2000 (Session Chair)
  68. International Conference JTC-CSCC 1993 (Session Chair)
  69. International Conference IEEE ISPACS 1993 (Session Chair)
  70. --------------------------------------------------------------------------------------------------------------------------------------
  71. IEEE Transactions on Circuits and Systems-I (Reviewer)
  72. IEEE Transactions on Circuits and Systems-II (Reviewer)
  73. IEEE Transactions on Signal Processing (Reviewer)
  74. IEEE Transactions on Signal Processing Letters (Reviewer)
  75. IEEE Transactions on Communications (Reviewer)
  76. IEEE Transactions on Audio, Speech and Language Processing
  77. IEE Proc. Vision, Image & Signal Processing (Reviewer)
  78. IET Signal Processing (Reviewer)
  79. International Journal: Signal Processing (Elsevier, Reviewer)
  80. International Journal: EURASIP Journal on Advances in Signal Processing
  81. International Journal: Multidimensional Systems and Signal Processing (Reviewer)
  82. International Journal: Dynamics and Control (Reviewer)
  83. International Journal: Circuit Theory and Applications (Reviewer)
  84. International Journal: Circuits, Systems, and Signal Processing (Reviewer)

  85. IEICE Transactions, Japan (Reviewer)
  86. Membership

    Senior Member, IEEE iUSAj