Basic Information

Computer Arts Laboratory
Associate Professor
Web site


Courses - Undergraduate
Human Interface and Virtual RealityIntroduction to Software Engineering ExercisesDigital music technologies SCCP (Student Cooperative Class Project)
Courses - Graduate
Spatial Hearing and Virtual 3D SoundIntroduction to Sound and Audio Music Technology Multimedia Machinima


I am interested in spatial sound, audio signal processing, phonetics, psychoacoustics, and aural/oral human-computer interaction.
Educational Background, Biography
2013 - Associate Professor, University of Aizu.
2010 - Researcher, Ikerbasque - University of the Basque Country.
2010 - Ph.D. in Computer Science and Engineering, University of Aizu.
Current Research Theme
Distance simulation in spatial soundBinaural roughness modelingLombard effect
Key Topic
Aural/oral human-computer interaction, real-time programming, visual programming
Affiliated Academic Society
Audio Engineering Society, Acoustical Society of Japan, andAcoustical Society of America


Running, snowboarding, playing music, etc.
School days' Dream
Building spatial ships
Current Dream
Make of this world a better place to live.
Nothing can stop you if you really want to do something.
Favorite Books
"The Black Swan: The Impact of the Highly Improbable" by Nassim Nicholas Taleb;
"The Man Who Mistook His Wife For A Hat: And Other Clinical Tales" by Oliver Sacks;
"Gödel, Escher, Bach: An Eternal Golden Braid" by Douglas R. Hofstadter.
Messages for Students
Distrust the authority. Just because a teacher tells you something, it doesn't mean that is true. Your strategy in life should be to listen carefully everybody and then test by yourself such statements to finally make up your own mind. In other words, learn to have critical thinking.
Publications other than one's areas of specialization
Encuentros entre Colombia y Japón: homenaje a 100 años de amistad, chapter "De como el mundo es un pañuelo y de las misteriosas maneras" (Of how the world is a handkerchief and other mysterious ways). Colombian Ministry of Foreign Affairs, Bogotá D.C., Colombia, 2010. (Fiction) In Spanish.

Main research

Sound and Audio Technologies

We are interested on sound as a vehicle to transmit information between humans and machines. In our research we focus mainly on spatial sound, applied psychoacoustics, and applied phonetics.

  • Spatial sound
    |TAB|The visual modality of perception is saturated with information coming from gadgets we use in daily basis; we want to find ways to convey part of that information via spatial sound using loudspeakers or headphones. We are particularly interested on synthesizing auditory distance in virtual environments and multi-sensory interfaces.
  • |TAB|
  • Applied psychoacoustics
    |TAB|In our group, we see reality as an active interpretation of stimuli received by the brain, its processing limits sometimes are exceeded by hardware capabilities, this mismatch brings opportunities for new interfaces explored in our lab, such as near ultrasound communication, bass enhancements using vibration motors, etc.
  • |TAB|
  • Applied phonetics
    |TAB|In collaboration research, we are studying effects of noise on speech, multilingualism, articulation and phonation phenomena. Speech technologies are being introduced as an interaction method for machines. Understanding how speech is produced in different setups is of paramount importance for such technology.
We use sound regularly to communicate with others, yet our understanding of it is so little that there may be many other opportunities for new technologies waiting to be discovered. This is a difficult task that requires common efforts. We are always looking forward for collaboration research; contact us if you are interested. Thanks!

View this research

Dissertation and Published Works

[1] J. González, Julián Villegas, and M. P. García. English compound processing in bilingual and multilingual speakers: The role of dominance. Second Language Research, May 2016.
[2] Julián Villegas. Locating virtual sound sources at arbitrary distances in real-time binaural reproduction. Virtual Reality, 19(3):201–212, Oct 2015.
[3] M. Cooke, C. Mayo, and Julián Villegas. The contribution of durational and spectral changes to the Lombard speech intelligibility benefit. Journal of the Acoustical Society of America, 135(2):874–883, Feb 2014.
[4] M. Cohen, R. Ranaweera, H. Ito, S. Endo, S. Holesch, and Julián Villegas. “Twin spin”: Steering karaoke (or anything else) with smartphone wands deployable as spinnable affordances. SIG-MOBILE Mobile Computing and Communications Review, 16(4):4–5, Oct 2012.
[5] Julián Villegas and M. Cohen. Roughness Minimization Through Automatic Intonation Adjustments. Journal of New Music Research, 39(1):75–92, 2010.