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Shinya Kijimoto Last modified date：2022.06.28

Professor / Dynamics of Mechanical Systems
Department of Mechanical Engineering
Faculty of Engineering


Graduate School
Department of Mechanical Engineering
Graduate School of Engineering
Undergraduate School
Department of Mechanical and Aerospace Engineering
School of Engineering


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Homepage
https://kyushu-u.pure.elsevier.com/en/persons/shinya-kijimoto
　Reseacher Profiling Tool　Kyushu University Pure
Academic Degree
Doctor of Engineering
Country of degree conferring institution (Overseas)
No
Field of Specialization
Dynamics of Machinery, Active Noise Control
Total Priod of education and research career in the foreign country
01years00months
Outline Activities
Research topics are as follows:
Active noise control with moving quiet zone.
Sound masking with active noise control technique.
Noise reduction by active noise shielding system.
Active noise control in 3D field.
Howling cancellation for active noise control.
Research
Research Interests
  • Active acoustic field control for region separation
    keyword : Active Noise Control, Region Separation, Multi Channel Control
    2018.04.
  • Active noise control aiming control area expansion
    keyword : Active Noise Control, Wave Front Control, Multi Channel Control, Virtual Error Microphone
    2015.04.
  • Sound masking using active noise control technique
    keyword : Active noise control, Masking, Adaptive Control, Adaptive Algorithm
    2012.10.
  • Noise reduction by active noise shielding system
    keyword : Active noise control, Noise shielding, Adaptive Control, Adaptive Algorithm, Moving Noise source
    2009.04.
  • Active noise control to follow movement of an evaluation point
    keyword : Adaptive Control, Active Noise Control, Movement of an Evaluation Point
    2004.04.
  • Acoustical measurement of hydrogen flow
    keyword : Hydrogen flow meter, propagation time
    2005.04～2010.03.
  • Detection of hydrogen leak using acoustical method
    keyword : hydrogen sensor, acoustic characteristics
    2004.04～2009.03.
  • Active Noise Control against incoming noise from external noise source.
    keyword : Active Noise Control, Adaptive Control, Adaptive Algorithm, Moving Noise source
    1999.04.
Academic Activities
Books
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1. Modal Analysis and Control of Sound and Vibration, CORONA PUBLISHING CO., LTD..
Reports
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1. Shinya Kijimoto, Toshihiko Higashi, Ikuma Ikeda, Yoichi Kanemitsu, Koichi Matsuda, Yosuke Koba, Active Noise Control in 3-dimensional Sound Field, Kyushu University - KAIST Joint Seminar 2006, 2006.09.
2. Shinya KIJIMOTO, Hideo TANAKA, Yoichi KANEMITSU, Koichi MATSUDA, Howling Cancellation for Active Noise Control, The 4th International Joint Symposium between Kyushu University and Chungnam National University, 1999.10.
Papers
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1. Xun Wang, Takayuki Satake, Yosuke Koba, Satoshi Ishikawa, Shinya Kijimoto, Active reduction of the two-way diffraction from a noise barrier by using feedforward control, 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, 576-586, 2016.08, This paper develops a feedforward (FF) structure based active noise control (ANC) system that reduces the two-way diffraction from an office partition with the aim of actively creating isolated acoustic domains in open-plan offices. The FF-ANC system can only reduce the noise downstream of the reference sensor due to the causality requirement. Therefore, a coupled FF control structure is proposed to realize the reduction of two-way diffraction. This system applies a two-source loudspeaker array as the control source, and two microphones as the reference and error sensors. The directivity of the loudspeaker array is controlled to emit the control sound only into the corresponding control area. In comparison with the preceding active diffraction reducing systems, using a directivity controlled loudspeaker array can generate an absorptive acoustic boundary rather than a reflective boundary on the diffracting edge, which can isolate the acoustic environment without adding reverberation in a room. The effectiveness of the proposed system is verified by computer simulations..
2. Xun Wang, Yousuke Koba, Satoshi Ishikawa, Shinya Kijimoto, Hybrid active noise barrier with sound masking in open-plan offices, Noise Control Engineering Journal, 10.3397/1/376389, 64, 3, 403-415, 2016.05, This paper presents a small-typed active noise barrier (ANB) with sound masking techniques for alleviating the noise problem and protecting the speech privacy in open-plan offices. This soundproof system reduces and masks the undesired sound simultaneously so that lower level of the masker is required to achieve the sound masking effect, comparing with the conventional sound masking systems. First, a real-time experiment to verify the noise attenuation performance of the proposed system for practical application has been conducted in a real office room. In the experiment, the influence of background noise on the system performance has also been investigated. The experiment results show that 3-8 dB active noise attenuation can be achieved behind the ANB in an office room. Moreover, in order to select an appropriate masker for the sound masking part of the system, several maskers have been compared and investigated by listening experiments. The results suggest that the stationary maskers are more suitable for the sound masking in offices by considering the sound masking performance and the annoyance of the maskers comprehensively..
3. Yoshiko Ohno, Yosuke Koba, ISHIKAWA Satoshi, Shinya Kijimoto, ACTIVE NOISE CONTROL FOR A MOVING EVALUATION POINT USING STEPSIZE VECTOR AND SECONDARY PATH INTERPOLATION, MJIIT-JUC Joint Symposium 2012, 2012.11.
4. Xun WANG, Shinya KIJIMOTO, Yosuke KOBA and Koichi MATSUDA, Noise Barrier Using Feedback Active Noise Control, The 40th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2011) , TS-6, SS33, 2011.09.
5. Ikuma IKEDA, Shinya KIJIMOTO, Koichi MATSUDA, Yosuke KOBA and Keitaro KAGEYAMA, Active Noise Control Using Position of Evaluation Point, Journal of System Design and Dynamics, 4, 753, 1421--1427, Special Issue on D&D2008, Paper No. T2-08-0860, 2009.05.
6. Detection of a lHydrogen Leak Using Acoustic Method .
7. Active Noise Reduction of impact Noise.
8. Ikuma IKEDA, Shinya KIJIMOTO, Koichi MATSUDA, Yosuke KOBA and Toshihiko HIGASHI, Active Noise Control Assuming Quiet Zone Movement, Journal of System Design and Dynamics, Vol.2，No.6，pp.1296-1305，2008, 2008.12.
9. Ikuma IKEDA, Shinya KIJIMOTO, Koichi MATSUDA and Yosuke KOBA, Active Noise Control with a Moving Evaluation Point, Journal of System Design and Dynamics, Vol.2，No.1，pp.362-369，2008, 2008.03.
10. Shinya Kijimoto, Yuichi SASAKI, Yoichi KANEMITSU, Koichi MATSUDA, Takashi YOSHIDA, Active Noise Control for Three-Dimensional Sound Field Using Fast Converging Algorithms, Journal of Environment and Engineering, vol.2, No.2, pp.257-265, 2007.03.
11. Howling Cancellation for Active Noise Control with Two Sound Sources.
12. Shinya KIJIMOTO, Hideo SUZUKI and Shun OGURO, Diffraction of Sound by Two Finite-Length Cascade Cylinders, The Journal of Acoustical Society of Japan(E), 19, 4, pp. 269- 273, 1998.01.
13. Frequency Domain Adaptive Algorithm for Active Noise Control, 2nd Report, Investigation with an Experimental Duct Model.
14. Frequency Domain Adaptive Algorithm for Active Noise Control, 1st Report, Proposal of an Algorithm and Computer Simulations, Transactions of the Japan Society of Mechanical Engineers,.
Presentations
 Show All Presentations >>
1. WANG　Xun, SATAKE Takayuki, KOBA Yosuke, Satoshi ISHIKAWA, KIJIMOTO Shinya, Active reduction of the two-way diffraction from a noise barrier by using feedforward control, Inter-Noise 2016, 2016.08.
2. Xun Wang, Yosuke Koba, Satoshi Ishikawa, Shinya Kijimoto, Development of indoor hybrid active noise barrier, 22nd International Congress on Sound and Vibration, ICSV 2015, 2015.07, This paper develops an indoor active noise barrier (ANB) by using a hybrid active noise control (HB-ANC) system. The HB-ANC system reduces the noise diffracted from the top of the ANB and the noise propagated to the head position of the target person behind the ANB simultaneously to achieve higher noise attenuation. However, the waterbed effect of the feedback control part of the HB-ANC system will cause noise enhancement at some frequencies in the control area. In the paper, in order to solve this problem, a filter able to cancel the noise enhancement is integrated into the HB-ANC system. Then, the noise attenuation performance of the ANB under four sound field configurations is verified by simulations. The sound field configurations are set up to investigate how the diffraction from side of the ANB and the reflection influence the performance of the ANB. An experiment in the anechoic chamber is also conducted. The simulation and experiment results indicate that the low frequency noise can be reduced in a wide area behind the ANB, and at the head position of the person, the noise attenuation can be obtained within a wider frequency range, even for the sound fields where the diffraction from side and the reflection exist..
3. Xun Wang, Yosuke Koba, Satoshi Ishikawa, Shinya Kijimoto, Hybrid active noise barrier with sound masking (Experiment for verifying the noise attenuation performance in an office room and evaluation of maskers by listening experiments), 44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015, 2015.08, A hybrid active noise barrier (ANB) integrating sound masking techniques, which aims to abate the noise problem and improve the speech privacy in open plan offices, has been proposed in the previous work. This ANB exploits a hybrid active noise control (ANC) system with sound masking techniques to reduce and mask the target sound simultaneously, so less masker power is needed to achieve the same masking performance with the conventional sound masking techniques. In the previous work, the effectiveness of the ANB has been verified by computer simulations and by experiments in an anechoic chamber. In this paper, an experiment is conducted to verify the noise attenuation performance of the ANB in the sound field of a real office room. The influence of background noise on the noise attenuation performance of the ANB is also investigated in the experiment. Moreover, in order to select an appropriate masker for the sound masking part of the control system, several types of maskers are compared and investigated by listening experiments in this paper..
4. WANG Xun, KOBA Yosuke, ISHIKAWA Satoshi, KIJIMOTO Shinya, Hybrid active noise barrier with sound masking, Inter Noise 2014, 2014.11.
5. TANIGUCHI Tishiro, KOBA Yosuke, ISHIKAWA Satoshi, KIJIMOTO Shinya, Active Noise Control Considering Moving Evaluation Point in Actual Sound Field, The 3rd Japan-Korea Joint Symposium on Dynamics and Control, 2013.08.
6. TAKAHASHI Akihiro, KIJIMOTO SHINYA, ISHIKAWA Satoshi, KOBA Yosuke, Sound Masking Using Active Noise Control, The 3rd Japan-Korea Joint Symposium on Dynamics and Control, 2013.08.
7. Kazuya YOKOTA, Shinya Kijimoto, ISHIKAWA Satoshi, Yosuke KOBA, Active Noise Control with Changing Adaptive Behavior Algorithm, The 3rd Japan-Korea Joint Symposium on Dynamics and Control, 2013.08.
8. Yoshiko Ohno, KOBA Yosuke, ISHIKAWA Satoshi, Shinya Kijimoto, Active Noise Control for a Moving Evaluation Point Using Stepsize Vector and Secondary Path Interpolation, Mjiit-Juc Joint Symposium, 2012.11.


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