http://www.tu-ilmenau.de

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Contact Person

Dr.-Ing. Stephan Werner

Acting Head of Group

Phone +49 3677 69-1653

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INHALTE

Team of the Electronic Media Technology Lab

Dr.-Ing. Stephan Werner

Research Scientist (Post-Doc)

phone: +493677 69-1653
fax: +493677 69-1255
Helmholtzbuilding, room H 3520

stephan.werner@tu-ilmenau.de

Activities

Activities

Below you will find a list of relevant activities in connection with research, teaching and administration (see also tabs 'Research' and 'Teaching').

 

Research Activities

Since 2008 I am actively represented in the scientific community with research. The focus of my research lies in the investigation of the connections between technical recording, signal processing and reproduction systems on the one hand and the perception of the scene mediated by technical systems on the other hand. The connections between perceptual and technical systems will be uncovered. So far, the focus has been, albeit not exclusively, on auditory perception.

The research carried out so far comprises:

  • Studies on technical components of spatial audio reproduction systems based on methods of binaural synthesis
  • Studies on the influence of training and adaptation processes on the localization and externalization of auditory events
  • Investigations on spatial hearing when using hearing aids
  • Investigations on the influence of context-dependent quality parameters on the occurrence of a plausible auditory illusion
  • Development of methods for adapting acoustic parameters of a binaural synthesis system to create perceptive congruence between synthesized scene and listening conditions
  • Creation of data sets of measured and adapted binaural space transfer functions for use in research projects  

 

Department of Electronic Media Technology and Institute of Media Technology 

I am committed to the self-administration of the institute and the department. 

  • Since April 2020 Acting head of the Electronic Media Technology Group
  • Since 2014 deputy head of the department electronic media technology with signature authority
  • Since 2014 elected representative of the scientific staff in the Institute Council of the Institute of Media Technology 

 

Conference Organization

Below is a list of activities related to conferences organised or planned. The activities are always to be understood as cooperation with other colleagues and professors. 

  • Publication Chair of the 9th International Conference on Quality of Multimedia Experience (QoMEX) 2017
  • Member of the organizing team for the 9th International Conference on Quality of Multimedia Experience (QoMEX) 2017
  • Organization of the International Conference on Spatial Audio (ICSA) of the Association of German Sound Engineers in Ilmenau (TU Ilmenau in cooperation with Fraunhofer IDMT), planned for 2019.

 

Expert Activity 

Below you will find my activities as a reviewer. 

  • Journal of the Audio Engineering Society
  • Conferences of the Audio Engineering Society
  • International Conference on Quality of Multimedia Experience (QoMEX)

 

Memberships 

  • Audio Engineering Society (AES)
  • German Society for Acoustics (DEGA)
  • Association of German Sound Engineers (VDT)
  • Student Section of the AES Ilmenau

Research

Research

Motivation

"The safest thing we know is undoubtedly what we experience in our own bodies. ... Therefore, the experienced world of meaning forms the only unassailable basis for the work of exact science." Max Planck (translated from german)

 

Field of Research

It has always been a goal of acoustic and visual recording and playback systems to create a perfect audiovisual illusion for the user. Great advances have been made in the development of audio systems such as ambisonics, wave field synthesis and binaural headphone reproduction, and video systems such as display technologies, stereoscopic recording and reproduction, and coding techniques. The quality of the synthesis is continuously improved. Nevertheless, numerous effects and limiting factors for the occurrence of immersion and plausibility are not understood.

 

Research Approach

The construction of an immersive and plausible perception in the user can be formulated as a goal for multimedia systems and services for the generation of a virtual reality and/or a reality enriched with virtual objects. The technical system is intended to create a multimedia illusion suitable for certain requirements and expectations. If this succeeds, the mediated scene and the technical system are characterized by a high degree of viability. 

A promising approach for a fundamental understanding of viability in a multimedia context is the combined investigation of the properties of the overall technical system including its individual components ("physical domain" in Figure 1), the individual perceptive quality describing features of the user ("perceptional domain" in Figure 1) and its interactions, especially in connection with the reproduction environment ("environment" in Figure 1).

Figure 1 - System view of the creation of a viable scene.

It must be assumed that the describable perceptive quality variables and correlations are always individual and time-variable. This additional variability seems to be primarily attributable to the changing intrinsic expectations of the individual user. The individual internal reference of the user is always adapted by cognitive processes of assimilation and accommodation.

The aim of the research is to systematically investigate the emergence of an audiovisual illusion by taking into account individual time-variable quality characteristics and by looking at the individual in the context of use of the technical system. The research is intended to make a decisive contribution to understanding the development of an overall quality. Relevant system components and parameters of the technical system are to be identified. A summarizing representation as a prediction model is aimed at. It is the firm conviction that it is imperative to consider the interrelationships of individual system components, individual perceptive quality characteristics and individual assessments in order to be able to make qualified statements about the occurrence of an overall quality.

 

The main research areas are subdivided into:

  • Generation of plausible and immersive spatial auditory events
  • Studies on perceptive effects in audio systems for spatial reproduction
  • Analysis of context-dependent quality parameters within binaural audio systems
  • spatial hearing using hearing implants
  • Contributions to the development of a predictive model of spatial auditory perception

Teaching

Teaching

The listed teaching activities give a summary of the teaching carried out so far at the Institute of Media Technology (█  Master; ▒ Bachelor). As a rule, the activities are always seen as cooperation with other colleagues and professors.   

▒ Grundlagen der Medientechnik - Vorlesung für Bachelor Medientechnologie 2. Semester - From 2015 to 2017, supervision of the lecture; preparation of lecture documents and lectures focusing on the basics of digitisation, auditory perception and audio recording; preparation of exams

▒ Multimedia Tools - Lectures and Projects for Bachelor Applied Media and Communication Science 2nd Semester - From 2010 to 2017 supervision of the lecture and parts of the project work; preparation of lecture documents as well as lectures; preparation of exams

▒ Praxiswerkstatt Hörtests - Mitorganisation und Mitbetreuung der Praxiswerkstatt für Bachelor Medientechnologie - Since 2011 in cooperation with the Fraunhofer IDMT Organisation and implementation of the Praxiswerkstatt Hörtests zu aktuellen Forschungsfragen eigener und der Forschung von Kollegeninnen und Kollegen

▒ Hauptseminar - Organisation and Supervision for Bachelor Media Technology 5th Semester - Since 2012 Organisation of the Hauptseminar in the fields of Electronic Media Technology and Audiovisual Technology (since 2015); Creation and Supervision of Hauptseminar Topics

█  Advanced Psychoacoustics - lecture and project for master media technology - from 2010 to 2017 organisation and supervision of the lecture; preparation of lecture documents as well as lectures and project work; preparation of examinations; preparation, planning, implementation and evaluation of the associated research project in cooperation with the students

█  Audio Systems Technology - Lectures and Seminars for Master Media Technology - Since 2009 organisation and supervision of lectures; preparation of lecture documents as well as lectures and seminars; preparation of exams

█  Applied and Virtual Acoustics - Lectures and Seminars for Master Media Technology - Since 2009 organization and supervision of lectures; preparation of lecture documents as well as holding lectures and seminars; preparation of exams

█  ▒ Master and Bachelor Theses - Topics and Supervision - Scientific Supervision of theses since 2010 (see tab 'Theses')

█  ▒ Fachkolloquium - Organisation and realisation - Since 2009 holding of the Fachkolloquium for students of media technology

Publications

Publications

List of scientific publications. The list usually includes publications in cooperation with colleagues. The order of authors mentioned does not necessarily correspond to the main authorship. 

The scientific fields include engineering related associations (e.g. Audio Engineering Society, Deutsche Gesellschaft für Akustik), quality assessment communities (e.g. QualiNet and QoMEX), audiology and neurology related associations (e.g. International Symposium on Auditory and Audiological Research) as well as associations with design and application related associations (e.g. Verband Deutscher Tonmeister). 

2020

Brandenburg, K., Klein, F., Neidhardt, A., Sloma, U., Werner, S., "Creating Auditory Illusions With Binaural Technology", Chapter, In book: The Technology of Binaural Understanding, pp. 623-663, August 2020. doi: 10.1007/978-3-030-00386-9_21

2019

Sloma, U., Klein, F., Werner, S., and Kannookadan, T. P. “Synthesis of binaural room impulse responses for different listening positions considering the source directivity”, 147th Convention of the Audio Engineering Society (AES), New York, USA, 2019.

Werner, S., “[On the influence of context-dependent quality parameters on the perception of externality and auditory event location] Über den Einfluss kontextabhängiger Qualitätsparameter auf die Wahrnehmung von Externalität und Hörereignisort”, Dissertation, Technische Universität Ilmenau, Fakultät für Elektrotechnik und Informationstechnik, Ilmenau, Deutschland, urn:nbn:de:gbv:ilm1-2018000672, 2019.

Werner, S., Klein, F., and Müller, C. “Spatial listening quality evaluation for synthesis of binaural room impulse responses for new audio object positions”, 147th Convention of the Audio Engineering Society (AES), New York, USA, 2019.

Brandenburg, K., Fiedler, B., Fischer, G., Klein, F., Neidhardt, A., Schneiderwind, C., Sloma, U., Stirnat, C., and Werner, S., "Perceptual aspects in spatial audio processing". Proceedings of the 23rd International Congress on Acoustics, Aachen, Germany, pp. 3354 – 3360, online access: http://pub.dega-akustik.de/ICA2019/data/articles/000653.pdf.

Brandenburg, K., Cano, E., Klein, F., Köllmer, T., Lukashevich, H., Neidhardt, A., Nowak, J., Sloma, U., and Werner, S. “Technical Requirements for a Personalized Auditory Reality”, in Proc. of DAGA 2019, Rostock, Germany, 2019.

Werner, S., Klein, F., and Brandenburg, K. “Sensory Cue Fitness in Spatial Auditory Perception - A Concept”, Posterpresentation at International Symposium on Auditory and Audiological Research (ISAAR), Nyborg, Denmark, 2019.

Werner, S., Klein, F., and Götz, G. “Investigation on spatial auditory perception using non-uniform spatial distribution of binaural room impulse responses”, in Proc. of 5th International Conference on Spatial Audio (ICSA), Ilmenau, Germany, 2019.

Zapf, D., Werner, S., and Fremerey, S. “Development of a method for measuring, displaying, and evaluating behavior in a position-dynamic binaural synthesis application”, Poster at 5th International Conference on Spatial Audio (ICSA), Ilmenau, Germany, 2019. 

2018

Klein, F. and Werner, S. “The Relevance of Auditory Adaptation Effects for the Listening Experience in Virtual Acoustic Environments”, 144th Convention of the Audio Engineering Society (AES), Italy, 2018.

Brandenburg, K., Cano, E., Klein, F., Köllmer, T., Lukashevich, H., Neidhardt, A., Sloma, U., and Werner, S., “Plausible Augmentation of Auditory Scenes Using Dynamic Binaural Synthesis for Personalized Auditory Realities”, to be published in Proc. of: Conference of the Audio Engineering Society (AES) Audio for Virtual and Augmented Reality, USA, 2018.

Werner, S., Neidhardt, A., Klein, F., and Brandenburg, K., “Comparison of Different Methods to Create an Interactive Augmented Auditory Reality Scenario Using Sparse Binaural Room Impulse Response Measurements”, in Proc. of DAGA 2018, Garching, Germany, 2018. 

Klein, F., Werner, S., and Rekitt, M., “Evaluierung einer virtuellen akustischen Umgebung für Hörgeräte”, in Proc. of DAGA 2018, Garching, Germany, 2018.

Pachatz, N., Werner, S., and Klein, F., “Methoden zur Anpassung einer Binauralsynthese an verschiedene raumakustische Parameter des Abhörraumes”, in Proc. of DAGA 2018, Garching, Germany, 2018.

Brandenburg, K., Cano Ceron, E., Klein, F., Köllmer, T., Lukashevich, H., Neidhardt, A., Nowak, J., Sloma, U., and Werner, S., “Personalized Auditory Reality”, in Proc. of DAGA 2018, Garching, Germany, 2018

Banashankarappa, A., Kortlang, S., Werner, S., and Rohdenburg, T., “Noise-Robust Speaker Identification in Cars”, in Proc. of DAGA 2018, Garching, Germany, 2018. 

2017

Sloma, U., Klein,F., Helbig, T. , Skowronek, J., Gadyuchko M., Werner, S. , Breitbarth, A. ,Neidhardt,A., Chillian, A., Brandenburg, K. ,Raake, A. ,Notni, G. ,Sattel, T., Witte, H. and Husar, P. “GO-LEM - Charakterisierung der auditorischen und auditorisch-visuellen Wahrnehmung des Menschen in Alltagsszenen”. In: Prävention von arbeitsbedingten Gesundheitsgefahren und Erkrankungen/ 23. Erfurter Tage. 2017, pp. 349–356. 

Chilian, A., Gadychuko, M., Katai. A., Klein, F., Sattel, T., Skuk, V., and Werner, S. “Innovative methods and technologies for spatial listening and speech intelligibility using hearing implants”, to be published in Proc. of: International Symposium on Auditory and Audiological Research (ISAAR), Denmark, 2017.

Werner, S., Klein, F., Chilian, A., and Gadyuchko, M., “Dataset of In-Ear and Behind-Ear Binaural Room Impulse Responses used for Spatial Listening with Hearing Implants”, 142nd Convention of the Audio Engineering Society (AES), Germany, 2017.

Werner, S., Götz, G., and Klein, F., “Influence of Head Tracking on the Externalization of Auditory Events at Divergence between Synthesized and Listening Room Using a Binaural Headphone System“, 142nd Convention of the Audio Engineering Society (AES), Germany, 2017.

Brandenburg, K., Klein, F., Neidhardt, A., and Werner, S., “Auditory Illusion over Headphones Revisited”, International Congress on Acoustics, Boston, USA, 2017.

Schaab, M., Dobmeier, V., Werner, S., and Klein, F., “Demonstrator for the auralization and control of the room divergence effect”, in Proc. of DAGA 2017, Kiel, Germany, 2017. 

Mittag, C., Werner, S., and Klein, F., “ Development and Evaluation of Methods for the Synthesis of Binaural Room Impulse Responses based on Spatially Sparse Measurements in Real Rooms”, in Proc. of DAGA 2017, Kiel, Germany, 2017.

Mittag, C., Böhme, M., Werner, S., and Klein, F., “Dataset of Binaural Room Impulse Responses at Multiple Recording Positions, Source Positions, and Orientations in a Real Room”, in Proc. of DAGA 2017, Kiel, Germany, 2017.

Klein, F., Werner, S., and Mayenfels, T., “Influences of training on externalization in binaural synthesis in situations of room divergence”, Journal of the Audio Engineering Society, 2017.

2016

Mittag, C., Böhme M., and Werner, S., “Dataset of KEMAR-BRIRs measured at several positions and head orientations in a real room”, Dataset, Technische Universität Ilmenau, DOI: 10.5281/zenodo.206860, 2016.

Werner, S., Klein, F., and Sporer T., “Adjustment of the Direct-to-Reverberant-Energy-Ratio to Reach Externalization within a Binaural Synthesis System”, AES Conference on Audio for Virtual and Augmented Reality, Los Angeles, CA, USA, 2016.

Brandenburg, K., Werner, S., Klein, F., and Sladeczek, C., “Auditory Illusions through Headphones: History, Challenges, and New Solutions”, ICA, Buenos Aires, Argentina, 2016.

Werner, S. and Böhme, M., “Dataset of Measured Binaural Room Transfer Functions of Individuals”, Dataset, Technische Universität Ilmenau, DOI: 10.5281/zenodo.61083, 2016.

Werner, S., “DRR-scaled Individual Binaural Room Impulse Responses”, Dataset, Technische Universität Ilmenau, DOI: 10.5281/zenodo.61072, 2016.

Werner, S., Klein, F., Mayenfels, T., and Brandenburg, K.: “A Summary on Acoustic Room Divergence and its Effect on Externalization of Auditory Events”, 8th International Conference on Quality of Multimedia Experience (QoMEX), DOI 10.1109/QoMEX.2016.7498973, Portugal, 2016.

Klein, F., and Werner, S.: “Auditory Adaptation to Non-Individual HRTF Cues in Binaural Audio Reproduction”, Journal of the Audio Engineering Society, 64(1/2):45-54, February 2016.

Werner, S., Böhme, M., Mayenfels, T., and Klein, F.: “Variance in Measured Binaural room Transfer Functions of Individuals”, in Proc. of DAGA 2016, Aachen, Germany, 2016.

2015

Klein, F. and Werner, S.: “Auditory Adaptation in Spatial Listening Tasks”, in Proc. of 138th AES convention, Poland, 2015.

Werner, S., Klein, F., and Brandenburg, K.: “Influence of Spatial Complexity and Room Acoustic Disparity on Perception of Quality Features using a Binaural Synthesis System”, in Proc. of 7th International Workshop on Quality of Multimedia Experience (QoMEX), Greece, 2015.

Werner, S., Rekitt, M., and Klein, F.: “Distribution of Quadrant Errors in Auditory Localization using a Binaural Headphone system”, in Proc. of 41st annual convention for acoustics, DAGA, Nürnberg, Germany, 2015.

Klein, F. and Werner, S.: “Kontextabhängige Parameter bei der Qualitätsbeurteilung binauraler Kopfhörersysteme”, in Proc. of 41stannual convention for acoustics, DAGA, Nürnberg, Germany, 2015.
Werner, S. and Liebetrau, J.: “Adjustment of Direct-to-Reverberant-Energy-Ratio and the Just-Noticable-Difference”, 6th International Workshop on Quality of Multimedia Experience (QoMEX), Singapore, 2014.

2014

Werner, S. and Klein, F.: “Influence of Context Dependent Quality Parameters on the Perception of Externalization and Direction of an Auditory Event”, 55th AES Conference Spatial Audio, Helsinki, Finland, 2014. 

Werner, S. and Klein, F.: ”Context and Plausibility in Binaural Synthesis”, in Proc of 2nd Int. Conf. on Spatial Audio (ICSA), Erlangen, Germany, 2014.

2013

Bönsel, C., Böhme, M., Göcke, D., Mayenfels, T., Schnemilich, M., Sporer, T., Werner, S., Wolf, M., and Würsig, A.: “Study on effects of BRIR set on quality assessment”, Contribution ISO/IEC Doc. M30222, Vienna, Austria, 2013.

Karlheinz Brandenburg, Stephan Werner, "Wohlfühlen mit dem richtigen Ton: Aktuelle Forschung und Technik", in: Akustik in Büro und Objekt, Dokumentation des 2. Symposiums Büro.Raum.Akustik. Köln 2011, Verlag Fraunhofer IRB, ISBN 9783816790792, 2013.

Stephan Werner, Florian Klein, Tamás Harczos, “Context-dependent quality parameters and perception of auditory illusions”, to be published in: Proc. of 4th International Symposium on Auditory and Audiological Research (ISAAR), Denmark, 2013.

Stephan Werner, Judith Liebetrau, “Effects of Shaping of Binaural Room Impluse Responses on Localization”, in Proc. of Fifth International Workshop on Quality of Multimedia Experience (QoMEX), pp.88-93, July 2013.

Stephan Werner, Judith Liebetrau, Thomas Sporer, “Vertical Sound Source Localization Influenced by Visual Stimuli”, Signal Processing Research, Volume 2 Issue 2, pp.29-38, June 2013.

Stephan Werner, Anett Zabel, “Effects of the Direct-to-Reverberant-Ratio and Divergence Between Synthesized and Listening Room on Perception of Virtual Acoustic Environment”, AIA-DAGA Merano 2013, pp.566-568, 2013.

Stephan Werner, Rebecca Sass, “Synthesis of Binaural Room Impulse Responses”, AIA-DAGA Merano 2013, pp.572-575, 2013.

Florian Klein, Stephan Werner, “HRTF adaption under decreased immersive conditions”, AIA-DAGA Merano 2013, pp.580-582, 2013.

2012

S. Werner, J. Liebetrau und T. Sporer, „Audio-visual discrepancy and the influence on vertical sound source localization“, in Proc. of 4th Int. Workshop on Quality of Multimedia Experience (QoMEX), pp. 133-139, Australia, 5. – 7. July 2012.

Simone Fueg, Stephan Werner, “Controlled Auditory Distance Perception using Binaural Headphone Reproduction – Algorithms and Evaluation”, In proceeding of: VDT Int. Convention, 27. Tonmeistertagung, At Cologne, Germany, 11/2012.

Frank Jürgens, Stephan Werner, “Loudness Curves for binaural playback”, In proceeding of: VDT Int. Convention, 27. Tonmeistertagung, At Cologne, Germany, 11/2012.

Stephan Werner, Simone Füg, “Controlled Auditory Distance Perception using Binaural Headphone Reproduction – Evaluation via Listening Tests”, In proceeding of: VDT Int. Convention, 27. Tonmeistertagung, At cologne, Germany, 11/2012.

Florian Klein, Stephan Werner, André Siegel, „Influence of base width of a two channel crosstalk canceller on localization of simulated sound sources”, In proceeding of: VDT Int. Convention, 27. Tonmeistertagung, At cologne, Germany, 11/2012.

2011

S. Werner und A. Siegel, „Effects of binaural auralization via headphones on the perception of acoustic scenes”, Proc. of 3rd International Symposium on Auditory and Audiological Research (ISAAR), pp.215-222, Denmark, 2011.

S. Werner, F. Klein und A. Siegel, „On the influence of visual feedback on vertical sound source localization“, Proc. of Int. Conf. on Spatial Audio, ICSA2011, Detmold, Deutschland, S.523-526, 2011.

F. Klein und S. Werner, „Individualization of head-related transfer functions“. 37th annual convention for acoustics, DAGA, Düsseldorf, Germany, 2011.

S. Werner, F. Klein und A. Siegel, „Dependencies of binaural auralization via headphones on listening Conditions“, 37th annual convention for acoustics, DAGA, Düsseldorf, Germany, 2011.

2010

Stephan Werner, Rebecca Sass, André Siegel, “Comparison of Recording Methods for Measurements of Individualized HRTFs”, VDT Int. Convention, 26. Tonmeistertagung, Leipzig, Germany, 11/2010.

André Siegel, Johannes Maggi, Stephan Werner, “Crosstalk-canceler for Stereophonic Setups in Real Rooms”, VDT Int. Convention, 26. Tonmeistertagung, Leipzig, Germany, 11/2010.

Florian Klein, Anna Kruspe, Martin Pfitzer, Stephan Werner, and Karlheinz Brandenburg, “Interaktiver audiovisueller Demonstrator psychoakustischer Phänomene”, 36th annual convention for acoustics, DAGA, Düsseldorf, Germany, 2011.

2009

Stephan Werner, Tamás Harczos, and Karlheinz Brandenburg, “Overview of numerical models of cell types in the cochlear nucleus”, International Symposium on Auditory and Audiological Research (ISAAR), Denmark, 2009.

Tamás Harczos, Stephan Werner, and Karlheinz Brandenburg, “Evaluation of cues for horizontal-plane localization with bilateral cochlear implants”, International Symposium on Auditory and Audiological Research (ISAAR), 2009.

2008

Stephan Werner, “Bio-inspired binaural sound source localization and separation”, Vortrag auf dem Workshop on Music Signal Analysis, Witten-Bommerholz, 2008.

Tamás Harczos, Stephan Werner, and Gero Szepannek,  “Formant map counterpart in auditory processing based on cochlear pressure wave trajectories”, Biomedical Circuits and Systems Conference. IEEE-BIOCAS, 2008.

Supervised Theses

Supervised Theses

List of supervised Master's, Diploma and Bachelor's theses (█ Master's/Diploma; ▒ Bachelor's). The list also includes theses that were co- supervised. Study and media projects are not listed.

2019

█  Dominik Zapf, „Entwicklung einer Methode zur Messung, Darstellung und Auswertung von Verhalten in einer positions-dynamischen Binauralsyntheseanwendung“, Masterarbeit, TU Ilmenau, 2019.

█  Georg Götz, „Simplified image-source modelling for dynamic rendering of virtual acoustics“, Masterarbeit, Co-Betreuung mit Ville Pulkki (Aalto University, Finnland), TU Ilmenau, 2019.

▒ Jonathan Häußler, „Automatische Erkennung der Raumgröße und -geometrie auf Basis binauraler Signale unter Verwendung Künstlicher Neuronaler Netze“, Bachelorarbeit, TU Ilmenau, 2019.

▒ Clemens Müller, „Entwicklung und Evaluierung von Methoden zur Synthese von binauralen Raumimpulsantworten zur Abbildung neuer Quellpositionen“, Bachelorarbeit, TU Ilmenau, 2019.

2018

█ Reem Haider Mahdi, "Investigation on individual differences in sound localization tasks description : study inter-individual difference in audio sound localization", Master thesis, TU Ilmenau, 2018.

█ Brijesh Bangalore Parappa, "Development and evaluation of an adaptive binaural synthesis system on the screen size", Master's thesis, TU Ilmenau, 2018.

█ Abhijatha K. Banashankarappa, "Noise-Robust Speaker Identification in Cars", Master thesis in cooperation with IAV automotive engineering, TU Ilmenau, 2018.

2017

▒ Nicolas Pachatz, "Investigations on the Relevance of Room Acoustic Parameters in Adaptation of a Binaural Synthesis System to the Room Acoustics of the Monitoring Room", Bachelor Thesis in progress, TU Ilmenau, 2017.

▒ Stefan Dietrich, "Investigations on spatial auditory perception using a bone conduction ear", Bachelor thesis in progress, TU Ilmenau, 2017.

█ Martin Rekitt, "Virtual acoustic environment for hearing aids", master thesis, TU Ilmenau, 2017.

█ Leo Thieme, "Design of an examination device for the reproduction of binaural signals via a bone conduction receiver", Master thesis, TU Ilmenau, 2017.

2016

▒ Georg Götz, "Investigation on the influence of head tracking on the externalisation of auditory events in case of divergence between synthesised scene and listening room using a binaural headphone system", Bachelor thesis, TU Ilmenau, 2016.

█ Christina Mittag, "Development and evaluation of a method for the synthesis of binaural spatial impulse responses based on spatially sparsely occupied measurements in real rooms", Master's thesis, TU Ilmenau, 2016 (Study awards of the DEGA 2017 and the SEW Eurodrive Foundation 2016).

▒ Andreas Löhner, "Implementation of a method for fading between room impulse responses of two different rooms for use in a binaural synthesis system", Bachelor thesis, TU Ilmenau, 2016.

█ Samar Shahabi Ghahfarokhi, "On the influence of visual feedback on the externalization of the percieved sound sources", Master Thesis, TU Ilmenau, 2016.

▒ Ruth Schultheis, "Analysis and Definition of a Suitable Test Environment for Quality Assessment with an Autostereoscopic Display", Bachelor Thesis, TU Ilmenau, 2016.

▒ Hong Ma, "Development of an Evaluation Method for the Evaluation of the Position of Moving Sound Sources", Bachelor Thesis, TU Ilmenau, 2016.

2015

▒ Kai-Peter Jurgeit, "Quality Analysis of Spherical Arrayauralization Based on Open Profiling of Quality", Bachelor Thesis, TU Ilmenau, 2015.

█ Thomas Mayenfels, "Study on the Influence of Training on the Perception of Externality", Master Thesis, TU Ilmenau, 2015.

█ Anna Rüppel, "Quality assessment of spatial sound fields under consideration of real measurement conditions", Master thesis, TU Ilmenau, 2015.

2014

▒ Martin Rekitt, "Determination of the Frequency Distribution of Quadrant Errors in the Localization of Auditory Events Using Binaural Headphone Reproduction", Bachelor Thesis, TU Ilmenau, 2014.

▒ Tobias Brass, "Room Acoustic Parameters of Rooms", Bachelor Thesis, TU Ilmenau, 2014.

▒ Markus Anton, "Room acoustic measurements and acoustic evaluation of seminar rooms at TU Ilmenau", Bachelor thesis, TU Ilmenau, 2014.

▒ Bernhard Fiedler, "Investigation into the implementation of an interactive room simulation for the distance representation of virtual sound sources", Bachelor thesis, TU Ilmenau, 2014.

2013

▒ Daniel Richter, "Extension of a method for determining the phase coherence of complex signals", Bachelor thesis, TU Ilmenau, 2013.

▒ Kai Pabst, "Evaluation of a binaural simulation of a two-channel stereo loudspeaker reproduction", Bachelor thesis, TU Ilmenau, 2013.

█ Wei Li, "Individual selection of non-individual external ear transmission functions on the basis of optimized data sets", Master's thesis, TU Ilmenau, 2013.

▒ Henri Meißner, "Comparison of different focusing methods with loudspeaker arrangements in the mid/high range", Bachelor thesis, TU Ilmenau, 2013.

2012

▒ Anett Zabel, "Comparison of hearing test methods for assessing spatial perception in binaural headphone reproduction", Bachelor thesis, TU Ilmenau, 2012.

█ Georg Heise, "Investigations on the relationship between the ear canal resonance frequency and the direction-dependent characteristics of the outer ear transfer function", Master's thesis, TU Ilmenau, 2012.

█ Rebecca Sass, "Synthesis of binaural spatial impulse responses", Master thesis, TU Ilmenau, 2012.

█ Markus Hesse, "Microphoning with the Motion Tracked Binaural Method", Diploma Thesis, TU Ilmenau, 2012.

▒ Sven Sammer, "Investigations on test person selection procedures for auditory quality investigations", Bachelor thesis, TU Ilmenau, 2012.

█ Simone Füg, "Investigations on distance perception of auditory events in headphone reproduction", Master's thesis, TU Ilmenau, 2012.

█ Hui Fei, "Individual Selection of Non-Individual External Ear Transfer Functions", Master Thesis, TU Ilmenau, 2012.

▒ Matthias Hellmich, "Creation of a database of head-related impulse responses", Bachelor thesis, TU Ilmenau, 2012.

█ Frank Jürgens, "Kurven gleicher Lautheit bei binauraler Kopfhörerwiedergabe", Master's thesis, TU Ilmenau, 2012 (3rd place study prize of the Thüringer Landesmedienanstalt 2013).

2011

▒ Ann-Christine Haddam, "Conceptual integration of the PATTI demonstrator into the processes of an information system for adaptive assessment" Bachelor thesis, TU Ilmenau, 2011.

▒ Paul Fiedler, "Sound Field Analysis and Adaptation of a Crosstalk Compensation Filter for Binaural Playback", Bachelor Thesis, TU Ilmenau, 2011.

█ Florian Klein, "Individualized equalization of external ear transmission functions", Diploma thesis, TU Ilmenau, 2011.

2010

█ Johannes Post, "Evaluation of acoustic room simulation methods and implementation of a real time acoustic room simulation algorithm for reproduction via headphones", diploma thesis, TU Ilmenau, 2010.

▒ Rebecca Sass, "Comparison of the influence of head-related transfer functions on the development of binaural features using different recording methods", Bachelor thesis, TU Ilmenau, 2010.

▒ Johannes Maggi, "Binaural reproduction via loudspeakers in stereo arrangement", Bachelor thesis, TU Ilmenau, 2010.

▒ Christian Neukam, "Compensation of non-optimal stereo arrangements for the reproduction of stereophonic/binaural signals", Bachelor thesis, TU Ilmenau, 2010.

█ Christoph Hahlweg, "Development of a system for acoustic position determination of the position of a sound object", Diploma thesis, TU Ilmenau, 2010.

█ Christoph Mank, "Evaluation and implementation of a method for sound source localization based on level difference stereophony", diploma thesis, TU Ilmenau, 2010.

Project Work

Project Work

The following comments deal with the content of projects and plans that have been worked out, applied for and processed. The projects are arranged chronologically in descending order after their start.

 

"Innovative methods and technologies for spatial hearing and speech understanding with hearing implants".

The research group, funded by the Thuringian Ministry of Economics, Science and the Digital Society, aims to develop innovative signal processing methods to improve spatial hearing and speech understanding using bone conduction implants (KLI) and cochlear implants (CI). On the one hand, these methods are to be generally applicable for hearing aids, on the other hand they are to be specially adapted for the implant types CI and KLI. In the case of CI, this requires the application of novel biologically-inspired strategies that allow improved replication of human hearing processes. For KLI, new active principles for mechanical stimulation on the basis of piezoelectric transducers are also to be researched. The overriding methodological framework is formed by regular perceptual examinations of directional hearing and speech perception with normal hearing and hearing impaired people. The results of these investigations are then incorporated into the further development of methods and technologies for CI and KLI.

The project started on 01.07.2016 with a duration of 2.5 years. The research group consists of colleagues from the Fraunhofer IDMT, the departments of mechatronics and electronic media technology at the TU Ilmenau and the ENT clinic at the University Hospital Jena. In cooperation with Florian Klein (Department of Electronic Media Technology, TU Ilmenau), their own activities include the planning, implementation and evaluation of perceptive examinations of spatial hearing using the above hearing aids. This also includes the preparation of the results with regard to an adaptation of the signal processing methods in an iterative process. 

 

"Development of an adaptive and interactive multimedia system as a tool for rehabilitation in hearing disorders".

The aim of the infrastructure development project supported by the Thüringer Aufbaubank is to create a tool to support rehabilitation in the case of hearing disorders with hearing aid treatment. An audiovisual system for training auditory spatial perception will be developed. The user should interactively and based on his abilities get used to his hearing aid in various complex realistic hearing situations. The features and presets of the hearing aid can be tested in a "protected environment". The hearing care professional is given a tool to adjust the hearing aid to complex and/or special scenes. In addition to purely acoustic reproduction, the tool uses a combination of spatial acoustic reproduction and spatial stereoscopic visual reproduction. The virtual audiovisual training environment should contribute to an increase of the training effect through its high degree of immersion and plausibility. The training methodology and the complexity of the scenes can be individually adapted to the user.

In addition, the funds applied for are intended to modernize the infrastructure of the Institute of Media Technology. Investments in the Institute's existing audio and video laboratories will increase the competitiveness of research, create added value for teaching and improve the chances of success of future research projects.

The project started on 01.04.2016 with a duration of three years. Together with his colleague Florian Klein (Department of Electronic Media Technology, TU Ilmenau), the project is being worked on in terms of content and organisation. His own activities include the development and implementation of acoustic measurements and binaural audio reproduction as well as the organisation and implementation of the procurement of new equipment and systems for the Institute of Media Technology. In the latter case in particular, this is done in close cooperation with colleagues of the Institute.

 

"Effects in the perception of psychoacoustic illusions."

In the individual application funded by the German Research Foundation (DFG), the aim is the fundamental investigation of the connections between perceptive and technical processes in order to create a "perfect" auditory illusion in the listener. Great progress has been made in the past in the development of audio systems such as ambisonics, wave field synthesis and binaural headphone reproduction. The quality of the synthesis is continuously improved. Nevertheless, numerous effects and limiting factors are not understood. The project deals with the systematic analysis of perceptual effects in the reproduction of binaural signals. Perceptual characteristics are measured in hearing experiments. From these, a measurement model for the perception of binaurally synthesized scenes should be derivable. The plausibility of a binaural auralization as a function of the context-dependent influencing factors shall be made estimable. Different perception-related characteristics of binaural auralization will be determined, evaluated and summarized for the plausibility of perception. Among the influencing factors to be investigated are above all the variation of recording and playback space, the acoustic complexity of the scene, the degree of personalisation of the recording and playback process and the visual presentation of the scenes. The effects of perception resulting from these influencing factors are made measurable. Their interdependencies are uncovered. From the multitude of possible effects, parameters are derived that allow conclusions to be drawn about the occurrence of a plausible auditory illusion. The perception-related characteristics are queried by means of numerous listening tests. A hearing test methodology is being developed for this purpose.

The project started on 01.05.2013 with a duration of three years. Together with his colleague Florian Klein (Department of Electronic Media Technology, TU Ilmenau), the project was worked on in terms of content and organisation. In addition to the organisation of the project, his own activities mainly included studies on the influence of context-dependent quality parameters. These contextual influences include, for example, the divergence between the listening room and the scene to be synthesized, the influence of additional visual stimuli and the personalization of the binaural synthesis system. In this work, new and essential insights into the formation of a plausible auditory illusion under consideration of contextual influences were gained. The project represents a core of the own research interest and is an essential basis for future own research. The final report of the project can be found in the appendix.

 

"VABBS - Virtual Audiovisual Binaural Binocular Studio Production"

The aim of the project, which is funded by the Thuringian Ministry of Economics, Science and the Digital Economy, is to develop the scientific and technical basis for an integrated television studio production environment for three-dimensional virtual and real audiovisual content. This includes on the one hand the extension of existing virtual studio technologies to high-resolution 3D (stereoscopic) video content, and on the other hand the development and integration of recording, playback and simulation techniques for 3D (binaural) audio content.

The project started on 01.01.2011 with a duration of 2 years. The project is the result of a cooperation between the Audiovisual Technology departments under the leadership of Prof. Hans-Peter Schade and the Electronic Media Technology department. It is the first own research project (after the diploma thesis).