Georgios Marentakis

English version of this page Institutt for informasjonsteknologi og kommunikasjon

English version of this page Stilling

Førsteamanuensis

Kontakt

+4769608398

georgios.marentakis@hiof.no

Studiested

Halden

Kontornr.

D1-037

Georgios Marentakis is an Associate Professor at the Faculty of Computer Sciences, Østfold University College. He teaches courses related human computer interaction, sound and music computing, and software development. He researches emerging applications of sound in human computer interaction, auditory augmented reality, and sonic interaction design. He is part of the human computer interaction, as well as acoustics, psychoacoustics, and audio signal processing research communities and publishes in related conferences and journals. He is part of the Digital Society Initiative.

Research Groups

Courses taught

Background

Georgios Marentakis has a background in HCI and Sound and Music Computing in particular sonic interaction design, sound synthesis and spatialization, and auditory perception and cognition. He holds an MSc in Electrical and Computer Engineering, an MSc in Acoustics and Signal Processing, a PhD in Human Computer Interaction, and has worked in research-intensive environments in North America and Europe.

Emneord: Sound and Music Computing, Human Computer Interaction, Det digitale samfunn, DigiTech

Marentakis, Georgios & Sadiq, Arsalan Ali (2023). Communicating Emotions During Lectures, Proceedings of the 15th International Conference on Computer Supported Education, CSEDU 2023. SciTePress. ISSN 978-989-758-641-5. s. 558–565. doi: 10.5220/0011989000003470.
Marentakis, Georgios; Grace, Victoria & Berger, Jonathan (2023). Multimodal Cues for Guided Breathing. I Astolfi, Arianna & Asdrubali, Francesco (Red.), Proceedings of Forum Acusticum 2023. European Acoustics Association (EAA). ISSN 978-88-88942-67-4.
Marentakis, Georgios (2023). Sketching in Sound and Interaction Design . I Astolfi, Arianna & Asdrubali, Francesco (Red.), Proceedings of Forum Acusticum 2023. European Acoustics Association (EAA). ISSN 978-88-88942-67-4.
Marentakis, Georgios (2023). Principal component analysis of binaural hrtf pairs, Proceedings of the Sound and Music Computing Conference 2023. SMC Network . ISSN 978-91-527-7372-7. s. 178–185. doi: 10.5281/zenodo.8343649.
Marentakis, Georgios (2022). Movement interaction with a loudspeaker: an index of possibilities, C&C ‘22 Proceedings of the 14th Creativity and Cognition 2022. Association for Computing Machinery (ACM). ISSN 978-1-4503-9327-0. s. 247–261. doi: 10.1145/3527927.3533026.
Jørgensen, Per-Arne; Stefanac, Tommy; Kshetree, Bipashna & Marentakis, Georgios (2022). Monitoring and Regulating Sonic Activity Through Feedback in Learning Environments. I Stephanidis, Constantine; Antona, Margherita & Ntoa, Stavroula (Red.), HCI International 2022 Posters, 24th International Conference on Human-Computer Interaction, HCII 2022, Virtual Event, June 26 – July 1, 2022, Proceedings, Part III. Springer. ISSN 978-3-031-06391-6. s. 35–42. doi: 10.1007/978-3-031-06391-6_5.
Marentakis, Georgios (2022). Spatial Audio for Multimodal Location Monitoring. Interacting with computers. ISSN 0953-5438. 33(5), s. 564–582. doi: 10.1093/iwc/iwac009.
Panagiotakopoulos, Dimitrios; Marentakis, Georgios; Metzitakos, Rossetos; Deliyannis, Ioannis & Dedes, Fanourios (2022). Digital Scent Technology: Toward the Internet of Senses and the Metaverse. IT Professional Magazine. ISSN 1520-9202. 24(3), s. 52–59. doi: 10.1109/MITP.2022.3177292.
Stigberg, Henrik; Hadjerrouit, Said; Kaufmann, Odd Tore & Marentakis, Georgios (2022). Analysing tensions faced by pre-service mathematics teachers engaging in digital fabrication. I Fernandez, C.; Llinares, S.; Gutierrez, A. & Planas, N. (Red.), Proceedings of the 45th Conference of the International Group for the Psychology of Mathematics Education (PME 45). Universidad de Alicante. ISSN 978-84-1302-178-2. s. 4-51–4-58. Fulltekst i vitenarkiv Vis sammendrag
This article analyses tensions pre-service teachers faced during the last workshop of participation in a series of professional development workshops on digital fabrication for creating manipulatives for mathematics education. Using the concept of community of practice and the notion of tension as a theoretical framework and a qualitative research design including video recording with 5 pre-service teachers, we identified three tension categories: technological, pedagogical, and workshop design. The results indicate that tensions are often caused by conflictual decisions between the workshop designers’ and students’ objectives as well as difficulties in digital fabrication and its application in teaching mathematics.
Marentakis, Georgios & Hölzl, Josef (2021). Compression efficiency and Signal Distortion of common PCA bases for HRTF Modelling. I Mauro, Davide Andrea; Spagnol, Simone & Valle, Andrea (Red.), Proceedings of the 18th Sound and Music Computing Conference. Axea sas/SMC Network. ISSN 978-88-945415-4-0. s. 60–67. doi: 10.5281/zenodo.5113511. Fulltekst i vitenarkiv Vis sammendrag
Principal Component Analysis (PCA) has been often used for HRTF compression and individualization. However, there is significant variation in how the input matrix on which PCA is applied is constructed. Here, we study the effect of choices on the selection of independent variables, the domain in which impulse responses are represented, the HRTF database used, and possible smoothing on the compression efficiency and the reconstruction quality of the resulting PCA model. Several findings replicate well across different databases. Results point to a benefit for signal compared to space PCA and for using minimumphase HRIRs or HRTFs. Smoothing HRTFs leads to an increase in compression efficiency and a reduction in spectral distortion and using HRTFs with logarithmic magnitude leads to lower spectral distortion compared to linear
Marentakis, Georgios; Borthakur, Debanjan; Batchelor, Paul; Andersen, Judith P. & Grace, Victoria (2021). Using Breath-like Cues for Guided Breathing. I Kitamura, Yoshifumi & Quigley, Aaron (Red.), CHI ’21: Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems. Association for Computing Machinery (ACM). ISSN 978-1-4503-8095-9. doi: 10.1145/3411763.3451796.
Marentakis, Georgios (2020). Pictorize: Transforming image region luminosity to sound brightness for monitoring location. I Spagnol, Simone & Valle, Andrea (Red.), Proceedings of the 17th Sound and Music Computing Conference. Axea sas/SMC Network. ISSN 978-88-945415-0-2. s. 268–275. Fulltekst i vitenarkiv Vis sammendrag
A novel algorithm for transforming static and moving images into sound is presented. The algorithm turns image areas into a sound whose brightness depends on image area luminocity. Subjective evaluation investigated the extent to which listeners could identify if a moving target entered an image area based on the timbre of the sound produced from a sonified camera stream, while engaging with a parallel transcribing task. Results show that listeners identified target entries well above threshold, however, false detections increased for image regions of similar luminosity. Although providing visual feedback improved monitoring performance significantly, it increased dual-task cost when both displays were not accessible by peripheral vision.
Marentakis, Georgios & Saitis, Charalampos (2020). Variation in timbral features due to outer ear filtering. Forum Acusticum. ISSN 2221-3767. s. 1047–1052. doi: 10.48465/fa.2020.0992.
Rumori, Martin & Marentakis, Georgios (2018). Paris flaneur - an artistic approach to binaural technology. PRESENCE: Virtual and Augmented Reality. ISSN 1054-7460. 26(2), s. 111–137. doi: 10.1162/PRES_a_00289.
Marentakis, Georgios; Pirró, David & Weger, Marian (2017). Creative evaluation. I Mival, Oli; Smyth, Michael A. & Dalsgaard, Peter (Red.), Proceedings of the 2017 Conference on Designing Interactive Systems. ACM Digital Library. ISSN 978-1-4503-4922-2. s. 853–864.
Marentakis, Georgios & Stahl, Benjamin (2017). oes serial memory of locations benefit from spatially congruent audiovisual stimuli? investigating the effect of adding spatial sound to visuospatial sequences. ICMI '17: Proceedings of the 19th ACM International Conference on Multimodal Interaction. ACM Digital Library. ISSN 978-1-4503-5543-8. s. 326–330. doi: 10.1145/3136755.3136773.
Marentakis, Georgios; Weger, Marian & Höldrich, Robert (2016). Perception of Spatial Extent in the Horizontal and Vertical Plane. Proceedings of the International Conference on Digital Audio Effects. ISSN 2413-6700.
Marentakis, Georgios; Griffiths, Cathryn & McAdams, Stephen (2016). Top-Down influences in the perception of sound displacement in a musical scene. ACM Transactions on Applied Perception. ISSN 1544-3558. 14(1), s. 1–19. doi: 10.1145/2911985.
Marentakis, Georgios & Liepins, Rudolf (2014). Evaluation of hear-through sound localization. CHI '14: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. ACM Digital Library. ISSN 978-1-4503-2473-1. s. 267–270. doi: 10.1145/2556288.2557168.
Marentakis, Georgios; Pirró, David & Weger, Marian (2014). Zwischenräume - a case study in the evaluation of sonic interaction design installations. I Kouroupetroglou, Georgios & Georgaki, Anastasia (Red.), Music Technology Meets Philosophy: From digital echos to virtual ethos Proceedings of the 40th International Computer Music Conference joint with the 11th Sound and Music Computing conference. International Computer Music Association. ISSN 978-0-9845274-3-4.
Marentakis, Georgios; Zotter, Franz & Frank, Matthias (2014). Vector-base and ambisonic amplitude panning: A comparison using pop, classical, and contemporary spatial music. Acta Acustica united with Acustica. ISSN 1610-1928. 100(5), s. 945–955. doi: 10.3813/AAA.918774.
Marentakis, Georgios & McAdams, Stephen (2013). Perceptual impact of gesture control of spatialization. ACM Transactions on Applied Perception. ISSN 1544-3558. 10(4), s. 1–21. doi: 10.1145/2536764.2536769.
Marentakis, Georgios & Pirró, David (2012). Exploring sound and spatialization design on speaker arrays. I Sturm, Bob L.; Dahl, Sofia & Larsen, Jan (Red.), Proceedings of the 9th Sound and Music Computing Conference - "Illusions". Logos Verlag Berlin. ISSN 9783832531805.
Zotter, Franz; Frank, Matthias; Marentakis, Georgios & Sontacchi, Alois (2011). Phantom source widening with deterministic frequency dependent delays. Proceedings of the International Conference on Digital Audio Effects. ISSN 2413-6700.
Marentakis, Georgios; Griffiths, Cathryn & McAdams, Stephen (2011). Detection of spatial displacement in musical scenes. I Christensen, Flemming (Red.), Proceedings of Forum Acusticum 2011. European Acoustics Association. ISSN 978-84-694-1520-7. doi: 10.1145/2911985.
Marentakis, Georgios; McAdams, Stephen & Peters, Nils (2011). Current technologies and compositional practices for spatialization: A qualitative and quantitative analysis. Computer Music Journal. ISSN 0148-9267. 35, s. 10–27. doi: 10.1162/COMJ_a_00037.
El-Shimy, Dalia; Marentakis, Georgios & Cooperstock, Jeremy (2009). Multimodal feedback in 3d target acquisition. I Kiyokawa, Kiyoshi; Coquillart, Sabine & Balakrishnan, Ravin (Red.), IEEE Symposium on 3D User Interfaces 2009. IEEE (Institute of Electrical and Electronics Engineers). ISSN 978-1-4244-3965-2. s. 95–98.
Marentakis, Georgios; Corteel, Etienne & McAdams, Stephen (2008). Wave field synthesis evaluation using the minimum audible angle in a concert hall. I McQuaide, Bill (Red.), Audio Engineering Society Convention Papers 124th Convention. Audio Engineering Society. ISSN 9780-937803-62-2.
Vasilakos, Athanasios; Wei, Liu; Nguyen, Ta Huynh Duy; Qui, Tran Cong Thien; Chen, Li Cheng & Boj, Clara [Vis alle 9 forfattere av denne artikkelen] (2008). Interactive theatre via mixed reality and ambient intelligence. Information Sciences. ISSN 0020-0255. 178(3), s. 679–693. doi: 10.1016/j.ins.2007.08.029.
Marentakis, Georgios; Peters, Nils & McAdams, Stephen (2007). DJ spat: Spatialized interactions for DJs. I Serafin, Stefania (Red.), Proceedings of the 2007 International Computer Music Conference. International Computer Music Association. ISSN 0-9713192-5-1.
Marentakis, Georgios & Brewster, Stephen (2006). Effects of feedback, mobility and index of difficulty on deictic spatial audio target acquisition in the horizontal plane, CHI '06: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. ACM Digital Library. ISSN 978-1-59593-372-0.
Marentakis, Georgios & Brewster, Stephen (2005). Effects of reproduction equipment on interaction with a spatial audio interface. , CHI EA '05: CHI '05 Extended Abstracts on Human Factors in Computing Systems. ACM Digital Library. ISSN 978-1-59593-002-6. doi: https:/doi.org/10.1145/1056808.1056982.
Marentakis, Georgios & Brewster, Stephen (2005). A comparison of feedback cues for enhancing pointing efficiency in interaction with spatial audio displays. MobileHCI '05: Proceedings of the 7th international conference on Human computer interaction with mobile devices & services. ACM Digital Library. ISSN 978-1-59593-089-7. s. 55–62. doi: https:/doi.org/10.1145/1085777.1085787.
Marentakis, Georgios & Brewster, Stephen (2004). A study on gestural interaction with a 3d audio display, Mobile Human-Computer Interaction - Mobile HCI 2004. Springer Berlin/Heidelberg. ISSN 978-3-540-28637-0. doi: 10.1007/b100594.

Se alle arbeider i Cristin

Marentakis, Georgios (2023). Multimodal Cues for Guided Breathing.
Marentakis, Georgios (2023). Sketching in sound and interaction design.
Marentakis, Georgios & Katz, Brian (2016). Advances in auditory display research: Introduction to this special issue. Journal on Multimodal User Interfaces. ISSN 1783-7677. 10, s. 191–193. doi: 10.1007/s12193-016-0226-7.

Se alle arbeider i Cristin

Publisert 18. juni 2019 15:47 - Sist endret 26. mai 2023 12:53