FACULTY

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Main research

Dissertation and Published Works

1.Juli\'an Villegas and William L. Martens and Michael Cohen and Ian Wilson,J.\ Acoust.\ Soc.\ Am.,Dec,5,4228,Spatial separation decreases psychoacoustic roughness of high-frequency tones,134,2013,2.Michael Cohen and Rasika Ranaweera and Kensuke Nishimura and Yuya Sasamoto and Tomohiro Oyama and Tetsunobu Ohashi and Anzu Nakada and Juli\'an Villegas and Yong Ping Chen and Sascha Holesch and Jun Yamadera and Hayato Ito and Yasuhiko Saito and Akira Sasaki,Proc.\ SIGGRAPH Asia: Symposium on Mobile Graphics and Interactive Applications,Nov,95:1--95:1,Twirled affordances, self-conscious avatars, \& inspection gestures,2013,3.Michael Cohen and Rasika Ranaweera and Kensuke Nishimura and Yuya Sasamoto and Shun Endo and Tomohiro Oyama and Tetunobu Ohashi and Yukihiro Nishikawa and Ryo Kanno and Anzu Nakada and Juli\'an Villegas and Yong Ping Chen and Sascha Holesch and Jun Yamadera and Hayato Ito and Yasuhiko Saito and Akira Sasaki,Proc.\ of SIGGRAPH,Nov,67:1--67:1,``Tworlds'': Twirled Worlds for Multimodal `Padiddle' Spinning \& Tethered `Poi' Whirling,2013,4.Yuya Sasamoto and Michael Cohen and Juli\'an Villegas,Proc.\ Int.\ Joint Conf.\ on Awareness Science and Technology \& Ubi-Media Computing,Nov,713--718,Controlling spatial sound with table-top interface,2013,5.Ian Wilson and Juli\'an Villegas and Terumasa Doi,Proc.\ of Ultrafest VI: the sixth Ultrafest meeting of researchers working with Ultrasound imaging technology for linguistic analysis,Nov,NA,Lateral tongue bracing in Japanese and English,2013,6.New York, USA,Juli\'an Villegas and Michael Cohen,Proc.\ 135 Audio Eng.\ Soc.\ Conv.,Oct,NA,Real-time head-related impulse response filtering with distance control,2013,7.Bektur Ryskeldiev and Juli\'an Villegas and Michael Cohen,Proc.\ of Tohoku Section Joint Conv.\ of Institutes of Electrical and Information Engineers,Aug,18,Exploring virtual sound environments with mobile devices,2013,8.Tetunobu Ohashi and Juli\'an Villegas and Michael Cohen,Proc.\ Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers,Aug,85,Controlling tempo in real-time with mobile devices,2013,9.Shogo Saze and Juli\'an Villegas and Michael Cohen,Proc.\ of Tohoku Section Joint Conv.\ of Institutes of Electrical and Information Engineers,Aug,279,Map- and photo-enabled navigation assistance in a driver simulator,2013,10.Florida,Jorge Gonzalez Alonso and Maria del Pilar Garcia Mayo and Juli\'an Villegas,Proc. GASLA 12: The 12th Int. Conf. on Generative Approaches to Second Language Acquisition,Apr.,NA,L3 morpho-lexical processing: Effects of bilinguals' language dominance,2013,11.Jorge Gonzalez Alonso and Juli\'an Villegas,AESLA, 31 Int.\ Conf.\ on Communication, Cognition and Cybernetics,NA,Dominance takes precedence: L3 English processing by Basque-Spanish bilinguals,2013,12.Juli\'an Villegas,Proc.\ 137 Audio Eng.\ Soc.\ Conv.,Oct,NA,Movement perception of Risset tones with and without artificial spatialization,2014,13.Tomomi Sugasawa and Jie Huang and and Juli\'an Villegas,Proc.\ 137 Audio Eng.\ Soc.\ Conv.,Oct,NA,Relative influence of spectral bands in horizontal-front localization of white noise,2014,14.,Michael Cohen and Juli\'an Villegas,Applications of audio augmented reality. Wearware, everyware, anyware, and awareware,,,,,,309--329,CRC Press,,Fundamentals of Wearable Computers and Augmented Reality,,,2015,15.Michael Cohen and Juli\'an Villegas and Woodrow Barfield,,Virtual Reality,,3,147--148,Special issue on spatial sound in virtual, augmented, and mixed-reality environments,19,2015,16.Juli\'an Villegas,,Virtual Reality,,3,201--212,Locating virtual sound sources at arbitrary distances in real-time binaural reproduction,19,2015,17.,Ian Wilson and Yuki Iguro and Juli\'an Villegas,Proc.\ 1 Int.\ Symp.\ on Applied Phonetics,,,Mar.,,,,,,Smoothing-spline ANOVA comparison of Japanese and English tongue rest positions of bilinguals,,2016,18.,Ian Wilson and Yuki Iguro and Juli\'an Villegas,Proc.\ Ultrafest VII,,,Dec,,,,,,Articulatory settings of Japanese-English bilinguals,,2015,19.,Juli\'an Villegas and Ian Wilson and Yuki Iguro and Donna Erickson,Proc.\ Ultrafest VII,,,Dec,,,,,,Effect of a fixed ultrasound probe on jaw movement during speech,,2015,20.Tokyo,Seunghun J.\ Lee and Jeremy Perkins and Juli\'an Villegas,Proc.\ Int.\ Conf.\ on Phonetics and Phonology,,,Sep.,,,,,,Acoustic correlates of tone in Du'an Zhuang: An interplay between pitch and phonation,,2015,21.Aizu Wakamatsu, Japan,Juli\'an Villegas and Ian Wilson and Jeremy Perkins,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Effect of task on the intensity of speech in noisy conditions,,2015,22.Aizu Wakamatsu, Japan,Ian Wilson and Jeremy Perkins and Juli\'an Villegas and Ayaka Orihara,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Reaction Time to Unnatural and Natural Japanese Pronunciation by Native and Non-Native Speakers,,2015,23.Aizu Wakamatsu, Japan,Donna Erickson and Juli\'an Villegas and Ian Wilson and Yuki Iguro,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Spanish Articulatory Rhythm,,2015,24.Chiang Mai, Thailand,Jeremy Perkins and Seunghun J.\ Lee and Juli\'an Villegas,Proc.\ 25 Annual Meeting Southeast Asian Linguistic Soc.,,,May,,,,,,OCP Effects in Suffixes with Burmese Creaky Tone,,2015,25.Aizu Wakamatsu, Japan,Ryo Igarashi and Juli\'an Villegas,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Steganography using audible signals for short distance communication,,2015,26.Aizu Wakamatsu, Japan,Yu Ito and Juli\'an Villegas,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Bass enhancement by actuator-enabled vest,,2015,27.Aizu Wakamatsu, Japan,Tsubasa Takahashi and Juli\'an Villegas,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,study on bimodal navigation systems,,2015,28.Aizu Wakamatsu, Japan,Shunsuke Nogami and Taku Nagasaka and Juli\'an Villegas and Jie Huang,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Improvement of azimuth perception in single-layer speaker array systems,,2015,29.Aizu Wakamatsu, Japan,Taku Nagasaka and Juli\'an Villegas and Jie Huang,Proc.\ Acoust.\ Soc.\ Japan, Autumn meeting,,,Sep.,,,,,,Novel GUI system for recording subjective responses in hearing experiment,,2015,30.New York,Taku Nagasaka and Shunsuke Nogami and Juli\'an Villegas and Jie Huang,Proc.\ 139 Audio Eng.\ Soc.\ Int. Conv.,,,Oct.,,,,,,Influence of spectral energy distribution on elevation judgments,,2015,31.New York,Shunsuke Nogami and Taku Nagasaka and Juli\'an Villegas and Jie Huang,Proc.\ 139 Audio Eng.\ Soc.\ Int. Conv.,,,Oct.,,,,,,Influence of spectral energy distribution on subjective azimuth judgements,,2015,32.Kobe,Bektur Ryskeldiev and Michael Cohen and Juli\'an Villegas,Proc.\ Int.\ Conf.\ on Virtual Reality Continuum and Its Applications in Industry,,,Oct.,,,,,,Rendering spatial audio through dynamically reconfigurable smartphone loudspeaker arrays,,2015,33.Juli\'an Villegas,,Sound,,,10--14,Improving singing experience for people with tuning difficulties,32,2017,34.Jorge Gonz\'alez-Alonso and Juli\'an Villegas and M.P. Garc\'ia-Mayo,,Second Language Research,,,,English compound processing in bilingual and multilingual speakers: The role of dominance,,2016,35.,Yuki Iguro and Ian Wilson and Juli\'an Villegas,J. Acoust. Soc. Am.,,,,4,,3222--3222,,,Articulatory settings of English-French bilinguals reanalyzed by SS-ANOVA,140,2016,36.,Juli\'an Villegas and Jeremy Perkins and Seunghun J.\ Lee,J. Acoust. Soc. Am.,,,,4,,3394--3394,,,Psychoacoustic roughness as creaky voice predictor,140,2016,37.,Juli\'an Villegas,Proc. Int. Electroglottography Workshop,,,,,,,,,Measuring acoustic feature from audio and EGG recordings,,2016,38.,Juli\'an Villegas and Takaya Ninagawa,Proc.\ 5th Int.\ Pure Data Convention,,,Nov,,,,,,Pure-data-based transaural filter with range control,,2016,39.,Juli\'an Villegas and Tore Stegenborg-Andersen and Nick Zacharov and Jesper Ramsgaard,Proc.\ 141 Audio Eng.\ Soc.\ Int.\ Conv.,,,Sep.,,,,,,A comparison of stimulus presentation methods for listening tests,,2016,40.,Jeremy Perkins and Seunghun Lee and Juli\'an Villegas,Proc.\ 22nd Himalayan Languages symp.,,,Jun.,,,,,,The roles of phonation and f0 in Wuming Zhuang tone,,2016,41.Buffalo,Jeremy Perkins and Seunghun Lee and Juli\'an Villegas,TAL: Proc.\ 5 Int.\ Symp. on Tonal Aspects of Languages,,,May,,,,,,An interplay between F0 and phonation in Du'an Zhuang tone,,2016,42.Boston, MA,Donna Erickson and Juli\'an Villegas and Ian Wilson and Yuki Iguro and Jeff Moore and Daniel Erker,Proc.\ 8 Speech Prosody,,,May,,,,,,Some acoustic and articulatory correlates of phrasal stress in Spanish,,2016,43.,Juli\'an Villegas,Proc.\ of \sc eatis: 8th Euro-American Conf. on Telematics and Information Systems,,,April,,,,,,An online benchmarking platform for visualizing ionizing radiation doses in different cities,,2016,44.,Juli\'an Villegas and Jeremy Perkins and Seunghun J.\ Lee,Proc.\ Seoul Int.\ Conf.\ on Speech Sciences,,,Nov,,,,,,Psychoacoustic roughness as proxy of creakiness in White Hmong,,2017,45.,Jeremy Perkins and Seunghun J.\ Lee and Juli\'an Villegas,Proc.\ Seoul Int.\ Conf.\ on Speech Sciences,,,Nov,,,,,,Psychoacoustic roughness as a measure of creakiness in two dialects of Zhuang,,2017,46.Nagoya, Japan,Anh T. Pham and Truong Cong Thang and Juli\'an Villegas and Michael Cohen,Proc. IEEE 6th Global Conf.\ on Consumer Electronics (GCCE),,,October,,,,,,\sc Vlc-based Smart Supermarket (\sc Smartket): Key Concepts and Enabling Technologies,,2017,47.,Juli\'an Villegas and Naoki Fukasawa and Yurina Suzuki,Proc.\ 143 Audio Eng. Soc.\ Int. Conv.,,,Oct.,,,,,,Improving Elevation Perception in Single-Layer Loudspeaker Array Display Using Equalizing Filters and Lateral Grouping,,2017,48.Nagoya, Japan,Juli\'an Villegas and Shoma Saito,Proc.\ IEEE 6th Global Conf.\ on Consumer Electronics (GCCE),,,October,,,,,,Assisting System for Grocery Shopping Navigation and Product Recommendation,,2017,49.Juli\'an Villegas,,Acoust. Sci. \& Tech.,,2,127--137,Improving perceived elevation accuracy in sound reproduced via a loudspeaker ring by means of equalizing filters and side loudspeaker grouping,40,2019,50.Juli\'an Villegas and Naoki Fukasawa,,Perception,,12,1179--1195,Doppler illusion prevails over Pratt effect in Risset tones,47,2018,51.University of Aizu,Juli\'an Villegas,2nd Int.\ Sym.\ on Applied Phonetics (ISAPh2018),,,Sep.,,,,,,Introduction to statistical analysis of phonetic data in R,,2018,52.,Juli\'an Villegas and Seunghun J.\ Lee,Proc.\ 6 Int.\ Conf.\ on Language Documentation \& Conservation (ICLDC),,,Feb.,,,,,,Creating maps for linguistic field-work using R,,2019,53.,Juli\'an Villegas,Proc.\ Int.\ Symp.\ on Universal Acoustical Communication,,,Oct.,,,,,,Association of frequency changes with perceived horizontal and vertical movement,,2018,54.,Jeremy Perkins and Seunghun J.\ Lee and Juli\'an Villegas and Kosei Otsuka,Proc.\ 5 NINJAL Int.\ Conf.\ on Phonetics and Phonology,,,Oct.,,,,,,Using psychoacoustic roughness to measure creakiness in Burmese,,2018,55.,Camilo Arevalo and Gerardo Sarria and Juli\'an Villegas,Audio Eng. Soc. Int. Conf. on Spatial Reproduction-Aesthetics and Science,,,Aug.,,,,,,Accurate Spatialization of VR Sound Sources in the Near Field,,2018,56.Juli\'an Villegas and Konstantin Markov and Jeremy Perkins and Seunghun J.\ Lee,,IEEE J.\ of Selected Topics in Signal Processing,,2,355--366,Prediction of creaky speech by recurrent neural networks using psychoacoustic roughness,14,2020,57.Juli\'an Villegas,,Acoustical Science and Technology,,1,,Movement perception of Risset tones presented diotically,41,2020,58.Irene de la Cruz Pav\'ia and Gorka Elordieta Alcibar and Juli\'an Villegas and Judit Gervain and Itziar Laka,,Int.\ J.\ of Bilingual Education and Bilingualism,,,,Segmental information drives adult bilingual phrase segmentation preference,,2020,59.,Hyun Kyung Hwang and Naonori Nagaya and Juli\'an Villegas,Proc.\ 178 Meeting of the Acoustical Society of America,,,,,,,,,Cue weighting in the perception of Tagalog stress,,2019,60.,Juli\'an Villegas and Seunghun J.\ Lee,Proc.\ Seoul Int.\ Conf.\ on Speech Sciences,,,,,,,,,An electroglottograph study of tonal contrast in Drenjongke (Bhutia),,2019,61.Marseille,Juli\'an Villegas,Proc.\ 14 Int.\ Symp.\ on Computer Music Multidisciplinary Research (CMMR),,,Oct.,,,,,,Spatial Perception of Risset Notches,,2019,H. S. Lai, A. Nassani, J. Blake, and J. Villegas, “Vr math bridge: Bridging interactivity in online education
with ai and vr,” in IEEE Gaming, Entertainment, and Media Conf., (Taiwan), Jul. 2025.
A. Nassani, J. Villegas, and J. Blake, “Adaptive learning companions: Enhancing education with biosignal-
driven digital human,” in Proc. ACM Conf. on Human Factors in Computing Systems (CHI), Apr 2025.
P. Fuente-García, J. Villegas, A. Zawiszewski, and I. de la Cruz-Pavía, “Word segmentation abilities in
healthy aging: evidence from bilingual older adults,” Bilingualism: Language and Cognition, Mar. 2025.
Submitted.
J. Perkins, S. J. Lee, and J. Villegas, “The interaction between tone and duration in Du’an Zhuang,” J. of
the Int. Phonetic Assoc., Feb. 2025. DOI: 10.1017/S0025100324000239.
K. Fujita and J. Villegas, “Development of ad hoc loudspeaker arrays using smart devices,” IEEE
Communications Magazine, Dec. 2024. DOI: 10.1109/MCOM.001.2400155.
J. Villegas and Y. Sato, “Perception of the missing fundamental in haptic complex tones,” in Proc. 157
Audio Eng. Soc. Conv., Oct. 2024.
P. Fuente-García, J. Villegas, and I. de la Cruz Pavía, “Lifespan word segmentation abilities: evidence from
bilingual older adults,” in Proc. Architectures and Mechanisms for Language Processing (AMLaP), Sep.
2024.
Y. Sakai and J. Villegas, “Digital audio effect for simulating perceived sound of one’s voice,” in Proc. Acoust.
Soc. Japan, Autumn meeting, (Osaka), Sep 2024.
J. Pinkl, J. Villegas, and M. Cohen, “Multimodal drumming education tool in mixed reality,” Multimodal
Technol. and Interact., vol. 8, Aug. 2024. DOI: 10.3390/mti8080070.
J. Villegas, I. Wilson, and D. Ishii, “Inter-utterance rest position changes associated to Lombard speech,”
in Proc. Ultrafest XI, Jun. 2024.
P. Fuente-García, J. Villegas, and I. de la Cruz Pavía, “Only proficiency predicts older bilinguals’ word
segmentation abilities in their second language,” in Proc. 37 Annual Conf. on Human Sentence Process.,
(Michigan), May 2024.
P. Fuente-García, J. Villegas, and I. de la Cruz Pavía, “Word segmentation abilities remain stable across
the lifespan: A comparative study of young and older bilinguals,” in Proc. Wkshp. on Language Process. in
Aging, (Vitoria-Gasteiz, Spain), May 2024.
T. Odaira and J. Villegas, “Delay digital audio effect inspired by acoustic environment on Mars,” in Proc.
AES 6th Int. Conf. on Audio for Games, (Tokyo), Apr. 2024.
N. Carr, J. Villegas, and J. Blake, “Dynamic online assessor: Scientific genre-specific automated feedback,”
in Proc. of JALTCALL Japan Association for Language Teaching Computer Assisted Language Learning
Conf., 2024.