Dr Yusuke Hioka

BE, ME, PhD (Keio University, Japan), PGCertTertTchg(Canterbury), SMIEEE


I received my B.E., M.E., and Ph.D. degrees in engineering in 2000, 2002, and 2005 from Keio University, Yokohama, Japan. From 2005 to 2012, I was with the NTT Cyber Space Laboratories (now NTT Media Intelligence Laboratories), Nippon Telegraph and Telephone Corporation (NTT). From 2010 to 2011, I was also a visiting researcher at Victoria University of Wellington. In 2013 I came back to New Zealand and was appointed as a Lecturer at the University of Canterbury, Christchurch. Then in 2014, I joined the Department of Mechanical Engineering as a Senior Lecturer in Mechatronics where I mainly teach electronics and computer engineering courses for the Mechatronics programme. I am also the Deputy Director of the Acoustics Research Centre (ARC) at the Department of Mechanical Engineering and the head of the Communication Acoustics Laboratory, which belongs to the ARC.

Research | Current

Since I was studying towards my PhD I specialised in audio and acoustic signal processing particularly focusing on microphone arrays which is a technology that enables us to emphasise sound arriving from particular directions/locations.

After I received my degree I worked in industry for nearly 8 years where I had many opportunities to utilise my expertise in developing commercial products as well as growing my academic career. Because of this industrial experience the majority of my research focuses on problems in the real world. I always try to invent technologies that are practically effective and feasible but are also supported by theoretical principles. Some of my inventions have been adopted in commercial products which have been attracting many users/customers' interests.

Besides audio and acoustic signal processing, recently I am also interested in wider fields related to sound such as speech, audiology, psychoacoustics and linguistics. 

For more details please visit the Communication Acoustics Laboratory web page.

Teaching | Current


MECHENG370: Analogue Circuit Design (2015-2019), Electronics and Signal Processing (2020-) (Course Coordinator; 2015-)
MECHENG313: Real-time Software Design (2014-2017), Design of Real-time Software (2019-)(Course Coordinator; 2017)
MECHENG705: Mechatronics Systems (2015-)
MECHENG726: Acoustics for Engineers (2017,2019-)


MECHENG201: Electronics and Computing for Mechanical Engineers (2017)

Postgraduate supervision

M.E. Mr Francis Del Prado - From March 2015 to February 2016. 
M.E. Ms Chenhui Jiang - From March 2019 to February 2020.
M.E. Ms Seo In Park - From March 2020 onwards.
M.E. Ms Charlene Lo - From March 2021 onwards.
PhD Dr Khairul Affendy Md Nor - From March 2016 to 2018. (Co-supervisor)
PhD Mr Benjamin Yen - From July 2016 to December 2020.
PhD Mr Nicholas Eng - From July 2018 onwards.
PhD Ms Yonghui Tao - From March 2021 onwards.


National Science Challenge Science for Technological Innovation (SfTI) Seed Project grant (PI) - 2020

Royal Society of New Zealand Catalyst: Seeding New Zealand-Japan Joint Research Project Programme grant (PI) - 2019

University of Auckland Faculty Research Development Fund (PI) - 2019

AUEA Emerging Researcher Award - 2016

University of Auckland Faculty Research Development Fund New Staff (PI) - 2015


Mechatronics Course Advisor (2015-)

Mechatronics Teaching Group Convenor (2017, 2019-)

Deputy Director, Acoustics Research Centre (2017-)

Faculty Research Committee Member (2016-2018)

Areas of expertise

  • Array signal processing
  • Audio/acoustic/speech signal processing
  • Room acoustics
  • Psychology of hearing

Member of the Acoustics Research Centre: http://www.acoustics.auckland.ac.nz/

Head of Communication Acoustics Lab: http://cal.auckland.ac.nz/

Committees/Professional groups/Services

  • Senior member of IEEE.
  • Commitee member of IEEE NZ Signal Processing / Information Theory Chapter
    • 2015: Vice Chair
    • 2016 -: Chair
  • Member of ASNZ (Acoustical Society of New Zealand).
  • Member of ASJ (Acoustical Society of Japan).

Selected publications and creative works (Research Outputs)

As of 29 October 2020 there will be no automatic updating of 'selected publications and creative works' from Research Outputs. Please continue to keep your Research Outputs profile up to date.
  • Hioka, Y., James, J., & Watson, C. I. (2020). Masker design for real-time informational masking with mitigated annoyance. Applied Acoustics, 159.10.1016/j.apacoust.2019.107073
    URL: http://hdl.handle.net/2292/48677
    Other University of Auckland co-authors: Jesin James, Catherine Watson
  • Hioka, Y., Kingan, M., Schmid, G., McKay, R., & Stol, K. A. (2019). Design of an unmanned aerial vehicle mounted system for quiet audio recording. Applied Acoustics, 155, 423-427. 10.1016/j.apacoust.2019.06.001
    Other University of Auckland co-authors: Michael Kingan, Karl Stol
  • Ollivier, B., Pepperell, A., Halstead, Z., & Hioka, Y. (2019). Noise robust bird call localisation using the Generalised Cross-Correlation with Phase Transform in the wavelet domain. Journal of the Acoustical Society of America, 146 (6), 4650-4663. 10.1121/1.5138593
  • Niwa, K., Hioka, Y., & Kobayashi, K. (2019). Microphone array source enhancement using subtractive PSD estimation model. APPLIED ACOUSTICS, 143, 239-249. 10.1016/j.apacoust.2018.07.007
    URL: http://hdl.handle.net/2292/45674
  • Niwa, K., Hioka, Y., & Uematsu, H. (2018). Efficient audio rendering using angular region-wise source enhancement for 360° video. IEEE Transactions on Multimedia, 20 (11), 2871-2881. 10.1109/TMM.2018.2829187
  • Hioka, Y., & Niwa, K. (2017). Estimating power spectral density for spatial audio signal separation: An effective approach for practical applications. Acoustical Science and Technology, 38 (4), 175-184. 10.1250/ast.38.175
    URL: http://hdl.handle.net/2292/35894
  • Hioka, Y., Tang, J. W., & Wan, J. (2016). Effect of adding artificial reverberation to speech-like masking sound. Applied Acoustics, 114, 171-178. 10.1016/j.apacoust.2016.07.014
  • Niwa, K., Hioka, Y., & Kobayashi, K. (2016). Optimal microphone array observation for clear recording of distant sound sources. IEEE Transactions on Audio, Speech and Language Processing, 24 (10), 1785-1795. 10.1109/TASLP.2016.2585879
    URL: http://hdl.handle.net/2292/31856


Contact details

Office hours

By appointment only

Primary office location

Level 9, Room 951
New Zealand

Social links

Web links