Institut für Nachrichtentechnik

Felix Immohr, M.Sc.

Research Topic

My research focuses on quality and quality of experience (QoE) analysis and evaluation methods for multi-party speech communication in immersive telepresence systems, realized for example in social virtual and mixed reality (VR/MR). In particular, system factors influencing experience, social presence perception and audiovisual plausibility in such systems are investigated. Beyond questionnaire-based assessment, a strong focus lies on behavior analysis (individual and interpersonal, verbal and non-verbal) to determine behavioral indicators for indirect assessment. This includes signal analysis of conversational voice recordings, for example for assessment of prosodics features and turn-taking dynamics. Beyond quality and behavioral evaluation, the research aims to provide methodological contributions to MR communication analysis and its comparison with face-to-face scenarios.

Publications

Google Scholar, ORCiD

W. Menz, A. Bhattacharya, R. R. Ramachandra Rao, T. Robotham, F. Immohr, S. Göring, E. A. P. Habets, and A. Raake, “Influence of 4th-order ambisonics audio on the perceived quality and exploration behavior of 360^o videos,” in 2025 International Conference on Metaverse Computing, Networking and Applications (MetaCom), pp. 381–388, Aug. 2025. [ bib | DOI ]

G. Rendle, F. Immohr, C. Kehling, A. Lammert, A. Kreskowski, K. Brandenburg, A. Raake, and B. Froehlich, “Influence of audiovisual realism on communication behaviour in group-to-group telepresence,” in 2025 IEEE Conference Virtual Reality and 3D User Interfaces (VR), pp. 569–579, IEEE, 2025. [ bib ]

A. Bhattacharya, L. F. d. S. Cardoso, A. Schleising, G. Rendle, A. Kreskowski, F. Immohr, R. R. R. Rao, W. Broll, and A. Raake, “Amis: An audiovisual dataset for multimodal xr research,” in Proceedings of the 16th ACM Multimedia Systems Conference, pp. 291–297, 2025. [ bib ]

F. Immohr, G. Rendle, A. Neidhardt, A. Lammert, B. Froehlich, and A. Raake, “Ics-mr: Interactive conversation scenarios for assessment of mixed reality communication,” in MM'25: Proceedings of the 32nd ACM International Conference on Multimedia, Association for Computing Machinery (ACM), 2025. [ bib | DOI ]

A. Lammert, G. Rendle, F. Immohr, A. Neidhardt, K. Brandenburg, A. Raake, and B. Froehlich, “Immersive study analyzer: Collaborative immersive analysis of recorded social vr studies,” IEEE Transactions on Visualization and Computer Graphics, 2024. [ bib ]

F. Immohr, G. Rendle, C. Kehling, A. Lammert, S. Göring, B. Froehlich, and A. Raake, “Subjective evaluation of the impact of spatial audio on triadic communication in virtual reality,” in 2024 16th International Conference on Quality of Multimedia Experience (QoMEX), pp. 262–265, IEEE, 2024. [ bib ]

F. Immohr, G. Rendle, A. Lammert, A. Neidhardt, V. M. Zur Heyde, B. Froehlich, and A. Raake, “Evaluating the effect of binaural auralization on audiovisual plausibility and communication behavior in virtual reality,” in 2024 IEEE Conference Virtual Reality and 3D User Interfaces (VR), pp. 849–858, IEEE, 2024. [ bib ]

F. Immohr, G. Rendle, A. Neidhardt, S. Göring, R. R. R. Rao, S. Arévalo Arboleda, B. Froehlich, and A. Raake, “Proof-of-concept study to evaluate the impact of spatial audio on social presence and user behavior in multi-modal vr communication,” in Proc. ACM International Conference on Interactive Media Experiences (IMX), pp. 209–215, 2023. [ bib ]

F. Immohr, G. Rendle, A. Neidhardt, A. Lammert, K. Brandenburg, B. Froehlich, and A. Raake, “APlausE-MR: Investigating multi-party communication in audiovisual mixed-reality environments,” in Proceedings of the 1st AUDICTIVE Conference. RWTH Aachen University, Germany, 2023. [ bib | DOI ]

Standard Documents

P. Pérez, G. Berndtsson, A. Adeyemi-Ejeye, F. Immohr, A. Raake, M. Fiedler, M. C. Q. Farias, J. Gutiérrez Sánchez, N. García Santos, C. Cortés Sánchez, F. Battisti, S. Baldoni, M. Carli, A. Ferrarotti, K. Brunnström, S. Rafiei, D. Juszka, M. Orduna, P. César, I. Viola, A. Singla, K. Mitra, H. S. Rossi, K. Koniuch, L. Janowski, D. Lindero, M. Die, R. Vanukuru, and L. Izzouzi, “Updated draft of p.ixc “interactive test methods for subjective assessment of extended reality communications”,” Doc. SG12-C0017, International Telecommunication Union, Geneva, Switzerland, Jan. 2025. [ bib ]

P. Pérez, G. Berndtsson, A. Adeyemi-Ejeye, F. Immohr, A. Raake, M. Fiedler, M. C. Q. Farias, J. Gutiérrez Sánchez, N. García Santos, C. Cortés Sánchez, F. Battisti, S. Baldoni, M. Carli, A. Ferrarotti, K. Brunnström, S. Rafiei, D. Juszka, M. Orduna, K. Mitra, I. Viola, and P. César, “First draft of p.ixc “interactive test methods for subjective assessment of extended reality communications”,” Doc. SG12-C199, International Telecommunication Union, Geneva, Switzerland, Apr. 2024. [ bib ]

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NOTICE FOR IEEE PUBLICATIONS: © IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works, must be obtained from the IEEE. Contact: Manager, Copyrights and Permissions / IEEE Service Center / 445 Hoes Lane / P.O. Box 1331 / Piscataway, NJ 08855-1331, USA. Telephone: + Intl. 908-562-3966.