English ver.

Masashi NAKAYAMA, Ph.D.

  • Lecturer, Department of Systems Engineering, Graduate School of Information Sciences, Hiroshima City University
  • Lecturer, Department of Systems Engineering, Faculty of Information Sciences, Hiroshima City University
  • Invited Research Scientist, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • E-mail: masashi(at)hiroshima-cu.ac.jp (Note: Please, substitute (at) into @.)

Career

  • Lecturer, Department of Systems Engineering, Graduate School of Information Sciences, Hiroshima City University, April 2018 to present
  • Lecturer, Department of Systems Engineering, Facaulty of Information Sciences, Hiroshima City University, April 2018 to present
  • Assistant Professor, Department of Systems Engineering, Graduate School of Information Sciences, Hiroshima City University, April 2014 to March 2018.
  • Assistant Professor, Department of Systems Engineering, Facaulty of Information Sciences, Hiroshima City University, April 2014 to March 2018.
  • Invited Research Scientist, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), April 2015 to present
  • Invited Research Scientist, Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), January 2011 to Marh 2013
  • Assistant Professor, Department of Electrical and Computer Engineering, Kagawa National College of Technology, October 2009 to March 2013
  • Ph.D. in Information Sciences, Hiroshima City Unversity, September 2010
  • Assistant Professor, Department of Electrical and Computer Engineering, Takamatsu National College of Technology, April 2008 to October 2009
  • Invited Research Scientist, Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology (AIST), April 2008 to March 2009
  • Technical Staff, Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology (AIST), June 2007 to March 2008

Academic Societies

  • Member, IEEE
  • Member, Acoustical Society of Japan
  • Member, The Institute of Electronics, Information and Communication Engineers

Fields of Research

  • Body-Conducted Speech Recognition
  • Speech Recognition
  • Signal Processing

Books

  1. Masashi Nakayama, Naoki Shigekawa, Takashi Yokouchi, Shunsuke Ishimitsu, "Frame-by-Frame Speech Signal Processing and Recognition for FPGA Devices" in "Sensors for Everyday life"(Editor: O.A. Postolache, S.C. Mukhopadhyay, K.P. Jayasundera, A.K. Swain), ISBN 978-3-319-47318-5, Springer, Hard cover, November 2016.
  2. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Improvement on Sound Quality of the Body Conducted Speech from Optical Fiber Bragg Grating Microphone" in "Modern Speech Recognition Approaches with Case Studies"(Editor: S. Ramakrishnan), ISBN 978-953-51-0831-3, IN-TECH, Hard cover, November 2012.
  3. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Improvement of Sound Quality on the Body Conducted Speech Using Differential Acceleration" in "Speech Technologies"(Editor: Ivo Ipsic), ISBN978-953-307-996-7, IN-TECH, Hard cover, 432 pages, June 2011.

Journal papers

  1. Satoshi Iijima, Shunsuke Ishimitsu and Masashi Nakayama, "Effects of Gaze Angle on Vocalization", SS06-04, The 13th International Conference on Innovative Computing, Information and Control (ICICIC2018), Lianyungang, China, August 2018. (To appear)
  2. Masashi Nakayama, Satoshi Nakatani and Shunsuke Ishimitsu, "Body-Conducted Speech Recognition Using Model Adaptation", SS06-05, The 13th International Conference on Innovative Computing, Information and Control (ICICIC2018), Lianyungang, China, August 2018. (To appear)
  3. Yibing Cheng*, Kenta Narusawa, Satoshi Iijima, Masashi Nakayama, Shunsuke Ishitmitsu, Aiko Ishida and Osamu Mikami, "An Early Detection System to Find Respiratory Diseases for Pigs with Body-Conducted Sound", SS06-06, The 13th International Conference on Innovative Computing, Information and Control (ICICIC2018), Lianyungang, China, August 2018. (To appear)
  4. Cheng Yibing, Kenta Narusawa, Satoshi Iijima, Masashi Nakayama, Shunsuke Ishimitsu, Aiko Ishida and Osamu Mikami, "FUNDAMENTAL RESEARCH OF AN EARLY DETECTIVE RESPIRATORY SYSTEM FOR FINDING PIG DISEASE ", The 25th International Congress on Sound Vibration, 4 pages, Hiroshima, Japan, July 2018.
  5. Kenta Narusawa, Cheng Yibing, Shunsuke Ishimitsu, Masashi Nakayama, Satoshi Iijima, Aiko Ishida and Osamu Mikami, "DEVELOPMENT OF A RESPIRATORY DISEASE DETECTION SYSTEM FOR LIVESTOCK USING BODY-CONDUCTED SOUND ", The 25th International Congress on Sound Vibration, 5 pages, Hiroshima, Japan, July 2018.
  6. Kohei Kabashima, Masashi Nakayama and Shunsuke Ishimitsu, "STUDY OF PHARYNGEAL TONSIL HYPERTROPHY DETECTION BY USING PHONETIC SOUND ", The 25th International Congress on Sound Vibration, 5 pages, Hiroshima, Japan, July 2018.
  7. Cheng Yibing, Kenta Narusawa, Satoshi Iijima, Masashi Nakayama, Shunsuke Ishimitsu, Aiko Ishida and Osamu Mikami, "Fundamental research for an early detection system to find respiratory diseases in pigs", 2018 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, pp.510-512, Honolulu, USA, March 2018.
  8. Satoshi Iijima, Shunsuke Ishimitsu and Masashi Nakayama, "Influence of the Lombard Effect, Fletcher Effect and Band-Emphasized Auditory Feedback on Singing Voice", 12th International Conference on Innovative Computing, Information and Control, Kurume, Japan, Aug. 2017.
  9. Masashi Nakayama, Shunsuke Ishimitsu, Kimiko Yamashita, Kaori Ishii,Kazutaka Kasai and Satoshi Horihata, "FUNDAMENTAL RESEARCH OF SPEECH DISCRIMINATION FOR TONGUE THRUST ARTICULATION USING ZERO-CROSSING AND MEL-FREQUENCY CEPSTRUM COEFFICIENTS", Paper 1235, 8 pages, The 24nd International Congress on Sound and Vibration (ICSV24), London, U.K., July 2017.
  10. Satoshi IIjima, Shunsuke Ishimitsu and Masashi Nakayama, "Effects of auditory feedback on singing", Paper 461, X pages, The 24nd International Congress on Sound and Vibration (ICSV24), London, U.K., July 2017.
  11. Satoshi Iijima, Shunsuke Ishimitsu and Masashi Nakayama, "Influence of the Lombard Effect, Fletcher Effect and Band-Emphasized Auditory Feedback on Singing Voice", Part B: Applications, ICIC Express Letters(ICIC-ELB), Vol.9, No.4, pp.331-338, April 2018.
  12. Masashi Nakayama, Kosuke Kato and Masaru Matsunaga, "Statistical analysis and modeling of formant frequencies of vowels phonated by traditional Japanese Shigin singers", International Journal of Innovative Computing, Information and Control, Vol.13, No.5, pp.1441-1425, October 2017.
  13. Satoshi IIjima, Shunsuke Ishimitsu and Masashi Nakayama, "Effects of Masking Noise in Auditory Feedback on Singing", International Journal of Innovative Computing, Information and Control, Vol.13, No.2, pp.591-603, April 2017.
  14. Masashi Nakayama, Naoki Shigekawa and Takashi Yokouchi, "FRAME-BY-FRAME SPEECH SIGNAL PROCESSING FOR FIELD PROGRAMMABLE GATE ARRAY DEVICES", ICIC Express Letters, Vol.10, No.12, pp.2949-2955, December 2016.
  15. Yibing Cheng, Masashi Nakayama and Shunsuke Ishimitsu, "COMPARISONS OF CONTEXT-DEPENDENT SUB-WORD TRANSFER FUNCTIONS FOR THE SPEECH SUPPORT SYSTEM", Part B: Applications, ICIC Express Letters(ICIC-ELB), Vol.7, No.9, pp.2007-2012, September 2016.
  16. Masashi Nakayama, Mitsuaki Abe, Yusuke Amino and Shunsuke Ishimitsu, "Living support system consisting of IC card interface and embedded system", Part B: Applications, ICIC Express Letters(ICIC-ELB), Vol.7, No.3, pp.505-511, March 2016.
  17. Satoshi Iijima, Sho Seikoba, Shunsuke Ishimitsu and Masashi Nakayama, "Effects of High-Pass Filtered and Pitch-Shifted Auditory Feedback on a Singer's Pitch", Part B: Applications, ICIC Express Letters(ICIC-ELB), Vol.6, No.12, pp.3285-3289, December 2015.
  18. Masahiro Harazono, Daichi Kitamura, Masashi Nakayama, "Humbucking pickup response excited by string vibration", Acoustical Science and Technology, Vol.33 No.5, pp.301-309, September 2012.
  19. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Sound quality improvement of body-conducted speech from Optical Fiber Bragg Grating microphone using differential acceleration and noise reduction method", ICIC Express Letters (ICIC-EL), Vol.6, No.4, pp.1013-1018, April 2012.
  20. Shunsuke Ishimitsu, Kouhei Oda, Masashi Nakayama, "BODY-CONDUCTED SPEECH RECOGNITION IN SPEECH SUPPORT SYSTEM FOR DISORDERS", International Journal of Innovative Computing, Information and Control, Vol.7, No.8, pp.4929-4940, August 2011.
  21. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "A study of making clear body-conducted speech using differential acceleration", IEEJ Transactions on Electrical and Electronic Engineering, Vol.6 Issue 2, pp.144-150, March 2011(online: January 2011).
  22. Shunsuke Ishimitsu, Masashi Nakayama, Seiji Nakagawa, "Body-conducted speech retrieval from a noisy environment using differential acceleration", International Journal of Advanced Mechatronic Systems, Vol.2, No.4, pp.246-253, June 2010.
  23. Masashi Nakayama, Shunsuke Ishimitsu, "SPEECH SUPPORT SYSTEM USING BODY-CONDUCTED SPEECH RECOGNITION FOR DISORDERS", International Journal of Innovative Computing, Information and Control, Vol.5 No.11, pp.4255-4265, November 2009.

Proceedings of International Conferences

  1. Masashi Nakayama, Naoki Shigekawa and Takashi Yokouchi, "Frame-by-Frame Speech Signal Processing for FPGA Devices", 168, 11th International Conference on Innovative Computing, Information and Control, Harbin, China, Aug. 2016.
  2. Yibing Cheng, Masashi Nakayama and Shunsuke Ishimitsu, "Comparisons of Context-Dependent Sub-Word Transfer Functions for the Speech Support System", SS05-08, 11th International Conference on Innovative Computing, Information and Control, Harbin, China, Aug. 2016.
  3. Masashi Nakayama and Shunsuke Ishimitsu, "INVESTIGATION OF QUANTIZATION SIZE FOR SOUND QUALITY IMPROVEMENT ON BODY-CONDUCTED SPEECH USING THE DIFFERENCE CALCULATION", Paper 380, 6 pages, The 23nd International Congress on Sound and Vibration (ICSV23), Athens, Greece, July 2016.
  4. Masashi Nakayama, Naoki Shigekawa, Takashi Yokouchi and Shunsuke Ishimitsu, "Frame-by-frame speech recognition as hardware decoding on FPGA devices", The 9th International Conference on Sensing Technology (ICST 2015), pp.860-863, Auckland, New Zealand, Dec. 2015.
  5. Masashi Nakayama, Mitsuaki Abe, Yusuke Amino and Shunsuke Ishimimtsu, "Living Support System Consisting of IC Card Interface and Embedded System", ICICIC2015-049, pp.207, The Tenth International Conference on Innovative Computing, Information and Control (ICICIC2015), Dalian, China, August 2015.
  6. Satoshi Iijima, Sho Seikoba, Shunsuke Ishimitsu, and Masashi Nakayama, "Effects of High-Pass Filtered and Pitch-Shifted Auditory Feedback on a Shinger's Pitch", ICICIC2015-SS01-07, pp.116, The Tenth International Conference on Innovative Computing, Information and Control (ICICIC2015), Dalian, China, August 2015.
  7. Masashi Nakayama, Aya Kajino, Seiji Nakagawa and Shunsuke Ishimitsu, "IMPROVEMENT OF BODY‐CONDUCTED SPEECH SOUND QUALITY USING THE ACCELERATION DIFFERENCE ‐ EVALUATION BY A WORD INTELLIGIBILITY TEST", Paper No. 499, 10.RS06, The 22nd International Congress on Sound and Vibration (ICSV22), Florence, Italy, July 2015.
  8. Kento Oue, Shunsuke Ishimitsu and Masashi Nakayama, "STUDY ON SOUND QUALITY EVALUATION USING HEART RATE VARIABILITY ANALYSIS", Paper No. 470, T10.RS03, The 22nd International Congress on Sound and Vibration (ICSV22), Florence, Italy, July 2015.
  9. Satoshi Iijima, Sho Seikoba, Shunsuke Ishimitsu and Masashi Nakayama, "EFFECTS OF AUDITORY FEEDBACK ON A SINGER'S PITCH", Paper No. 913, T13.SS03, The 22nd International Congress on Sound and Vibration (ICSV22), Florence, Italy, July 2015.
  10. Masashi Nakayama, Satoshi Nakatani and Shunsuke Ishimitsu, "Improvement of body-conducted speech recognition using modelestimation", 43rd International Congress on Noise Control Engineering (Inter-noise2014), No.444, 4 pages, Melbourne, Australia, November 2014.
  11. Masashi Nakayama, Kosuke Kato and Masaru Matsunaga, "Formant frequencies of sung vowels intonated by six traditional Japanese Shigin singers. Part I: Dataset construction and analysis method ", SMAC Stockholm Music Acoustics Conference 2013 (SMAC13), pp.264-268, Stockholm, Sweden, July 2013.
  12. Kosuke Kato, Masashi Nakayama and Masaru Matsunaga, "Formant frequencies of sung vowels intonated by six traditional Japanese Shigin singers. Part II: Results of analysis and statistical investigations", SMAC Stockholm Music Acoustics Conference 2013 (SMAC13), pp.269-274, Stockholm, Sweden, July 2013.
  13. Masashi Nakayama and Masaru Matsunaga, "Extension of the living support system using IC card and Ethernet for informing the status of devices and disaster prevention systems", the 12th Joint Seminar on Geo-Environmental Engineering 2013, pp.108-111, Seoul, South Korea, May 2013.
  14. Masashi Nakayama, Kosuke Kato, Masaru Matsunaga, "Extracting the fundamental frequency of steady-state portions of traditional Japanese singing Shigin", 2013 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing, pp.253-256, The Island of Hawaii, USA, March 2013.
  15. Masashi Nakayama, Yusuke Amino, Mitsuaki Abe, Junichi Inamura, "The living support system using IC card interface with disaster prevention system", The 1st IEEE Global Conference on Consumer Electronics 2012(IEEE GCCE2012), pp.725-728, Makuhari Messe, Japan, October 2012.
  16. Masashi Nakayama, Masahiro Harazono, Kuwajima Shinobu, Shunsuke Ishimitsu, "Design and practice of an acoustic education program to increase vocational awareness", IEEE International Conference on Teaching, Assessment and Learning for Engineering 2012 (IEEE TALE2012), pp.127-129, Hong Kong, China, August 2012.
  17. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Sound quality improvement for the body-conducted speech of a sentence unit using differential acceleration", 2012 ICME International Conference on Complex Medical Engineering (ICME CME 2012), pp.147-153, ANA Crowne Plaza Hotel, Kobe, Japan, July 2012.
  18. Masashi Nakayama, Yusuke Amino, Mitsuaki Abe, Junichi Inamura, "The Living Support System Using IC Card and Embedded Technology for Improvement of Daily Life with Disaster Preventions", the 11th Joint Seminar on Geo-Environmental Engineering 2012, pp.105-112, Caen, France, May 2012.
  19. Masashi Nakayama, Yusuke Amino, Mitsuaki Abe, Junichi Inamura, "An IC Card Interface Using Embedded Technology with Universal Remote Controller for Living Support System", the 16th IEEE Mediterranean Electrotechnical Conference (IEEE MELECON), pp.19-22, Yasmine Hammamet, Tunisia, March 2012.
  20. Masashi Nakayama, "Fundamental research on a singing training support system for Shigin: Japanese traditional singing", IEEE SoutheastCon 2012, S4-A-1, Florida, U.S.A., March 2012.
  21. Masashi Nakayama, Tomokazu Shikama, Shinobu Mukai, "Improvement for program of creative sensor systems using embedded technology", The 5th International Symposium on Advances in Technology Education (ISATE2011), Republic Polytechnic, Singapore, September 2011.
  22. Masashi Nakayama, Shunsuke Ishimitsu, Hayato Nagoshi, Seiji Nakagawa, Kazutoshi Fukui, "Fundamental research on a body-conducted speech microphone using an Optical Fiber Bragg Grating for high magnetic field and noisy environments", Inter-noise 2011, Osaka International Convention Center, Osaka, Japan, September 2011.
  23. Masashi Nakayama, Mitsuaki Abe, Junichi Inamura, "The IC card interface using embedded technology for the living support system", The 54th International Midwest Symposium on Circuits and Systems (IEEE MWSCAS 2011), Tp2Track2-4, Yonsei University, Seoul, Korea, August 2011.
  24. Masashi Nakayama, Shunsuke Ishimitsu, Hayato Nagoshi, Seiji Nakagawa, Kazutoshi Fukui, "Body-conducted speech microphone using an Optical Fiber Bragg Grating for high magnetic field and noisy environments", Forum Acusticum 2011, pp.101-104, Aalborg, Denmark, June 2011.
  25. Masashi Nakayama, Shinobu Mukai, Tomokazu Shikama, Masashiro Harazono, "Education for creative sensor system using embedded technology", The 4th International Symposium on Advances in Technology Education (ISATE2010), 1C2, Hotel Kyosera, Kagoshima, Japan, September 2010.
  26. Masashi Nakayama, Shinobu Mukai, Tomokazu Shikama, Masashiro Harazono, "Education for embedded technology for college of technology students", The international symposium on Innovative Technology towards Sustainable Society (ITSS2010), Kagawa National College of Technology, pp.16-20,Takamatsu, Japan, July 2010.
  27. Shunsuke Ishimitsu, Kouhei Oda, Masashi Nakayama, "Body-conducted speech recognition in speech support system for disorders", The Fourth International Conference on Innovative Computing, Information and Control (ICICIC2009), Ambassador Kaoshiung, Kaohsiung, Taiwan, December 2009.
  28. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Speech estimation using body-conducted speech microphone in noisy environment", Inter-noise2009, Westin Ottawa, August 2009.
  29. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Speech Estimation from Body-conducted Speech with Differential Acceleration", The 2009 IEEE International Conference on Networking, Sensing and Control (IEEE ICNSC'09), pp.858-863, Okayama University, Okayama, Japan, March 2009.
  30. Masashi Nakayama, Shunsuke Ishimitsu, Seiji Nakagawa, "Speech recognition with body-conducted speech using differential acceleration", Acoustics'08 Paris, Palais des Congres, Paris, France, pp.1407-1412, July 2008.
  31. Shunsuke Ishimitsu, Masashi Nakayama, "Construction of Speech Support System Using Body-Conducted Speech Recognition for Disorders", The Third International Conference on Innovative Computing, Information and Control (ICICIC2008), Dalian University, Dalian, China, June 2008.
  32. Shunsuke Ishimitsu, Masashi Nakayama, Toshikazu Yoshimi, "Construction of the Noise-Robust Body-Conducted Speech Recognition System", The Second International Conference on Innovative Computing, Information and Control (ICICIC2007), Kumamoto City International Center, Kumamoto, Japan, Sep 2007.
  33. Shunsuke Ishimitsu, Masashi Nakayama, Toshikazu Yoshimi, Hirofumi Yanagawa, "NOISE-ROBUST RECOGNITION SYSTEM MAKING USE OF BODY-CONDUCTED SPEECH MICROPHONE", AES 122nd Convention, Austria Center Vienna, Vienna, Austria, May 2007.