Kategorie: ‘IHTA’

Promotionsprüfung Dipl.-Ing. Jonas Stienen

21. Juni 2022 | von

Am 3. Juni 2022 hat Herr Jonas Stienen seine mündliche Promotionsprüfung erfolgreich abgeschlossen.

Herr Stienen promovierte über das Thema:

„Real-time auralisation of outdoor sound propagation“

Doktorhut- und Doktortape-Übergabe

Das IHTA gratuliert sehr herzlich!

Abstract der Doktorarbeit:

Auralisation describes the process of generating and presenting audible sound using computer programs and audio hardware. Since the result is perceived naturally by the human’s auditory system, a demonstration by means of auralisation is easily comprehensible and does neither require background knowledge nor expertise. Producing auralisation under real-time constraints increases the implementation demands significantly. Real-time auralisation is required in applications that respond to user interaction, for example, in interactive Virtual Reality (VR) environments. Dynamically moving sound sources and receivers evoke a change in the perceived sound, and the corresponding result must be provided as quickly as possible. A feeling of immersion can be created if the response time of the system does not exceed perceptual thresholds and thus enables a plausible scene presentation. To achieve this emotional state, real-time auralisation must comply with the expected physical behaviour.

The realisation of a real-time auralisation application for outdoor environments represents a promising addition to current noise assessment procedures. It also delivers the foundation for the auditory modality in outdoor VR scenarios, which can server as as an audio-video tool for perception-related scientific investigations.

In the past, auralisation has gained much attention in room acoustics. An attempt to transfer the established concepts and approaches to outdoor environments reveals two systemic deficiencies.

Firstly, room acoustic simulations are commonly based on Geometrical Acoustics (GA), which determines reflected sound rapidly and with high accuracy, but struggles to incorporate diffracted sound. In most urban settings, however, the transmission of sound from a noise source to a receiver contains a significant contribution of both reflected and diffracted components. Furthermore, dynamic virtual environments are time-variant. Traditional realisations often neglect this characteristic, treating an acoustic environment as temporarily static on a frame-by-frame basis. Adaption to dynamic events is implemented by transition of sequences of time-invariant simulations, which is contradictory to the highly dynamic nature of outdoor scenarios.

To address these two misconceptions, a real-time auralisation system is suggested that attaches increased importance to fast geometric diffraction simulations and is based on an audio rendering network that reflects the time-variant nature of dynamic outdoor sound propagation.

Das IHTA bei der DAGA Stuttgart 2022

18. März 2022 | von

Nach dreijähriger, pandemiebedingter Pause fährt das Institut für Hörtechnik und Akustik wieder zur DAGA Tagung, die dieses Mal in Stuttgart stattfindet.

Hier eine Übersicht der wissenschaftlichen Beiträge (22.3.2022 – 24.3.2022):




 Wann?  Erstautor*in  Titel  Raum  Sitzung
14:00 Uhr
Lukas Aspöck Configuration of a real-time auralization framework for complex scenes 7-01 Virtuelle Akustik für dynamische Szenen: Methoden und experimentelle Anwendungen 1
14:20 Uhr
Pascal Palenda Open-Source Simulation Scheduling Framework for Real-Time Auralisation 7-01 Virtuelle Akustik für dynamische Szenen: Methoden und experimentelle Anwendungen 1
14:20 Uhr
Simon Kersten Finite Element Simulation of Bone Conduction in the Human Head: The Inner Ear Component 9-0.267 Physiologische Akustik
14:20 Uhr
Nils Rummler Analysis of Multi-Exponential Decay Constant Estimation Methods 47-03 Messung der Schallabsorption 1
14:40 Uhr
Christian Dreier Inverse modelling of vehicle pass-by noise for auralizations 7-01 Virtuelle Akustik für dynamische Szenen: Methoden und experimentelle Anwendungen 1
14:40 Uhr
Masoumeh Salehi Ersatzschaltbildmodellierung von Knochenschall 9 0.267 Physiologische Akustik
15:00 Uhr
Mark Müller-Giebeler Neural Network Based In-situ Method to Determine Surface Impedance and Absorption Coefficient of Porous Materials 47-03 Messung der Schallabsorption 1
15:20 Uhr
Roberto Campos Ruiz Dynamic Road Noise Mapping Prediction Using Machine Learning 9-0208 Geräuschbeurteilung
17:20 Uhr
Elie Abi Raad On using machine learning in Ultrasonic Metal Welding 57-06 AI-based methods for audio analysis and knowledge extraction 2
09:40 Uhr
Thomas Deutsch An Assessment of Higher-Order Ambisonics Reproduction in the Context of Spatial Release from Masking 9-01 Psychoakustik 3
14:00 Uhr
Michael Kohnen SAQI comparison of CTC, Ambisonics and VBAP 7-01 Virtuelle Akustik 2
15:20 Uhr
Jonas Heck Ambient Sounds in Auralization – Calibration Method for Spherical Microphones 7-01 Virtuelle Akustik 2
17:00 Uhr
Lukas Vollmer Stimulus Onset Asynchronies in Audio-visual Serial Recall Performance 9-01 Psychoakustik 5
08:40 Uhr
Jamilla Balint The methodology matrix to investigate evaluation methods in auditory cognition in interactive virtual environments 9-0208 SPP 2236 AUDICTIVE – Auditory Cognition in Interactive Virtual Environments 1
09:00 Uhr
Hark Braren On the Influence of Knee Reflections in HRTF Measurements 47-03 Binauraltechnik
09:00 Uhr
Ingo Witew Zur Unsicherheit von Raumimpulsantwortmessungen 47-01 Raumakustik 1
09:40 Uhr
Josep Llorca Bofi Unfolding urban vocabularies – Audio-visual description of public spaces and their connections to urban analysis 47-05 Soundscape
10:20 Uhr
Carolin Reimers Investigating Different Cueing Methods for Auditory Selective Attention in Virtual Reality 9-0208 SPP 2236 AUDICTIVE – Auditory Cognition in Interactive Virtual Environments 1
10:40 Uhr
Philipp Schäfer Auralization with Linked Atmospheric and Urban Noise Propagation Models 9-01 Lärm – Schifffahrt und Flugverkehr 2
14:00 Uhr
Cosima Ermert Examining the Influence of Varying Audio Reproduction Methods on Verbal Short-Term Memory 9-0208 SPP 2236 AUDICTIVE – Auditory Cognition in Interactive Virtual Environments 2
14:20 Uhr
Anne Heimes Numerical simulation of scattering patterns of a sineshaped surface 47-01 Raumakustik 2
14:20 Uhr
Marco Berzborn Spatio-temporal analysis of anisotropic reverberation 47-05 Rendering, Processing, and Perception of Diffuse Reverberation




Wann? Erstautor*in Titel Raum Sitzung
15:40 Uhr
Karin Loh Challenges and methods to design a dual-task experiment in spatial auditory environments for young children (3-6 years old) 9-01, J Psychoakustik (Poster 1)
15:40 Uhr
Lara Stürenburg Aeroacoustic Performance of Air Diffusers and their Psychoacoustic Evaluation 47-02, A Strömungsakustik (Poster)
11:00 Uhr
Shaima’a Doma Interrelation Analysis of Distance Metrics for Head-Related Transfer Functions 47-03, A Augmented Acoustic Reality (Poster)



Promotionsprüfung Muhammad Imran, M.Sc.

04. Februar 2022 | von

Am 4. Februar 2022 hat Herr Muhammad Imran seine mündliche Promotionsprüfung erfolgreich abgeschlossen.

Herr Muhammad Imran promovierte über das Thema:

„Virtual Building Acoustics – Auralization with contextual and Interactive Features“


Building acoustics auralization is used to assess the perceptual aspects of sound transmission in built environments to provide the guidelines for architectural constructions and to evaluate the noise effects on humans. These noise effects have a negative influence on daily-life activities and create disturbances in physical and metal work. These disturbances are present within the dwellings and/or might be from outdoor moving transient sound sources. Methods are available for auralization of sound insulation between connected rooms in compliance with the standardized data formats of sound insulation metrics and building structural geometries. However, there still exist certain challenges to be addressed to construct the transfer functions between noise sources and receiver room for indoor situations as well as for the outdoor moving sound sources and to make these sources audible through audio-visual virtual reality systems in real time and interactively. These challenges are due to certain simplifications which are implicit in the formulation on which the sound insulation prediction models are based, such as, diffuse field assumptions, neglecting source characteristics, and source and receiver room acoustics.

This thesis focuses on addressing the present challenges in the traditional sound insulation rendering techniques and establishing an interface between psychoacoustic research and building acoustics in dwellings (especially airborne sound insulation) integrated with audio-visual virtual reality environments. From the technical perspective, improvements are made in sound insulation prediction methods, and corresponding filter construction and rendering techniques for auralization. In the first place, the building elements are considered as multitude of secondary sources rather than taking them as point source radiators and the bending wave patterns are addressed in order to be able to properly construct the transfer functions from source to the receiver room. Secondly, the room acoustical simulations are carried out for both source and receiving rooms to generate transfer functions from source to the source room walls and from radiating receiving room walls to the listener, so that the geometries and absorption might be fit to the properties desired by the user for the spatial impression of the listening rooms. In addition, the transfer functions from radiating walls of the receiving room to listener are designed in such a way that not only indoor sources are handled nevertheless the outdoor moving sources are also addressed.

Some important conditions are associated with virtual building acoustics auralization research platform for advanced studies of noise effects in dwellings which are addressed. The audio files, generally, used in listening tests are arbitrarily manipulated by audio samples without the background of a physical model of the built environments. They must comply with the standardized data formats of sound reduction indices (level differences) and/or sound transmission coefficients. Other data related to building structure such as geometry shall be strictly connected to the architectural design, the building materials and constructions. Otherwise the conclusions of the psychoacoustic experiments have no direct correlation with the architectural design, especially when presented through virtual environments. To achieve this, the auralization framework is extended toward real-time interactive audio-visual technology, i.e. VR technology, in order to be able to introduce more realism and, hence, contextual features into psychoacoustic experiments. The building acoustics framework is validated by taking indoor and outdoor example case studies. Listening experiments close to real-life situations are carried out by using this framework to show that this framework can be used as an alternate to design new test paradigms which help to better analyse and interpret the noise impact in building situations depending on the actual activity such as working, learning, and rest.

Das IHTA gratuliert sehr herzlich!!

Doctoral exam Muhammad Imran, Examination committee: Prof. Dr. Kay Hameyer, Prof. Dr. Michael Vorländer, Prof. Dr. Edwin Reynders, Prof. Dr. Peter Jax

Promotionsprüfung Dipl.-Ing. Ingo Witew

02. Februar 2022 | von

Am 21. Januar 2022 hat Herr Ingo Witew seine mündliche Promotionsprüfung erfolgreich abgeschlossen.

Herr Witew promovierte über das Thema:

„Measurements in room acoustics – Uncertainties and influence of the measurement position“


Regardless of the field, measurements are essential for the validation of theories and for making well-founded decisions. A criterion for the validity and comparability of measured values is their uncertainty. The „Guide to the Expression of Uncertainty in Measurement“ (GUM) provides a standardized framework for determining and interpreting measurement uncertainty. In room acoustic measurements, the application of these rules is not yet widespread. On the one hand, this is due to the fact that well established 2-CH-FFT correlation techniques rely on a complex principle, which is not covered by the classical guide. In addition, the effect of input variables on a measurement can only be determined in individual cases after considerable effort. An example are fluctuations of room acoustic quantities over smallest distances between measurement locations in concert halls. This change of the sound field over the location is sometimes considerable and can only be predicted in relatively simple boundary value problems. This raises the question of the validity and interpretability of room acoustics measurements.

The goal of this thesis is to provide a GUM-compliant discussion of uncertainties in measuring room acoustic single-number quantities. This starts with a structured search of variables that potentially influence the measurement of room impulse responses. In a second step, this uncertainty is propagated through the algorithm for determining room acoustic single-number quantities.

Further emphasis is placed on the investigation of spatial fluctuations of the sound field in auditoria. The influence of an uncertain measurement position on the overall measurement uncertainty is discussed. To reach general conclusions, the relation between changes in the measurement location and the corresponding changes in room acoustics quantities is investigated empirically in extensive measurement series. To this purpose, a measurement apparatus was designed that allows automatic, high-resolution sampling of sound fields over large areas. The collected data sets the foundation to propagate the uncertainty using a Monte Carlo method.

This study shows how precisely a measurement position must be defined to ensure a given uncertainty of room acoustical single-number quantities. The presented methods form a foundation that can be flexibly extended in future investigations to include additional influences on the measurement uncertainty.

Das IHTA gratuliert sehr herzlich!!

Fotos: Josep Llorca-Bofí

Promotionsprüfung Dipl.-Ing. Florian Pausch

03. Dezember 2021 | von

Am 26. November 2021 hat Herr Florian Johannes Pausch seine mündliche Promotionsprüfung erfolgreich abgeschlossen.

Herr Pausch promovierte über das Thema: „Spatial audio reproduction for hearing aid research: System design, evaluation and application“


Listening, understanding and communicating are essential skills for social interaction in everyday life. Hearing loss (HL) may have severe consequences on these skills and affect individuals by hindering language development, learning success and participation in social life already at an early age. Depending on the individual predisposition, those affected are likely to withdraw from socialisation processes and sometimes suffer from compromised mental and general health. However, these consequences are not limited to children but also apply to adults and elderly people, especially those who refuse to acknowledge their HL and appropriate treatment, leading to an increased risk of apathy and depression, as well as memory problems and dementia. Assistive listening devices, such as hearing aids (HAs), represent an effective technical intervention tool capable of partially restoring impaired hearing and helping to overcome the aforementioned consequences of HL. Despite using the latest technology, individuals fitted with HAs often complain about poor performance of their devices, particularly in demanding indoor communication settings with unfavourable room acoustics. To some extent, these performance shortcomings can be attributed to limitations of HA algorithms, which are often designed and tested using simplified laboratory scenarios that may differ substantially from complex real-world situations. This thesis contributes to bridging this gap by exploring the advantages and flexibility of virtual acoustic environments (VAEs) reproduced by state-of-the-art spatial audio reproduction methods adapted for HA research. In order to further approach the overarching goal of ecological validity, the system design has been complemented by real-time implementations and room acoustic simulations, allowing to include listener movements via motion tracking and simulate plausible indoor environments, respectively. The systems are comparatively evaluated based on measurements and perceptual experiments with normal-hearing individuals, demonstrating their applicability in experiments involving normal-hearing participants and participants with HL.  

Doctoral exam Florian Pausch, Prüfungskommission: Zweitgutachterin Prof. Dr. Astrid van Wieringen (KU Leuven), Prof. Dr. Andrei Vescan, Prof. Dr. Dirk Uwe Sauer, Prof. Dr. Janina Fels


Doktorprüfung Florian Pausch. Prof. Dr.-Ing. Janina Fels und Dipl.-Ing. Florian Pausch. Foto: Mark Müller-Giebeler


Das IHTA gratuliert sehr herzlich!!

DEGA Symposium 14 – Interactive Auralization for Spatial Planning

16. November 2021 | von

The Institute for Hearing Technology and Acoustics demonstrated its auralization tools in the 14th DEGA Symposium – „Interaktive Auralisierung für die Planung von Räumen“ in Berlin, during the 12th and 13th November 2021, under the title:

Auralization of an urban scene: Multimodal presentation of aircraft noise with atmospheric damping and vehicle sound propagation with parametric synthetic sound sources.

Christian Dreier, Josep Llorca-Bofi, Jonas Heck, Philipp Schäfer, Anne Heimes, Luciana Alves, Jonas Kempin and Michael Vorländer.

An audio-visual live demonstration was presented with graphics based on Unreal Engine 4. The spatial audio was rendered using Virtual Acoustics (VA) making use of different simulation frameworks developed at IHTA. A similar example can be experienced in this 360º video.


DAGA 2022 – Travel Grants

11. November 2021 | von

Die Gesellschaft für Technische Akustik (GfTA e.V.) möchte Studierende des IHTAs unterstützen an der kommenden Jahrestagung für Akustik (DAGA 2022) teilzunehmen. Diese findet vom 21. bis zum 24. März 2022 in Stuttgart statt und bietet eine sehr gute Möglichkeit, erste Erfahrungen bei wissenschaftlichen Konferenzen zu sammeln.

Die GfTA fördert in diesem Jahr bis zu drei Studierende durch einen Reisezuschuss (Travel grant) in Höhe von jeweils 250€. Kandidat*innen müssen keinen wissenschaftlichen Beitrag bei der Konferenz einreichen, sollten aber zuvor noch keine DAGA-Konferenz besucht haben und entweder aktuell oder kürzlich an einer Lehrveranstaltung am IHTA teilgenommen haben.

Um Dich für den Travel grant zu bewerben, schreibe eine Email an Lukas Aspöck und erkläre in ein oder zwei Sätzen, warum Du motiviert bist an einer Akustik-Konferenz teilzunehmen. Die Deadline für Bewerbungen ist der 5.12.2021.

Euronoise 2021 – EAA e-Congress

26. Oktober 2021 | von

EURONOISE 2021 has started today and of course IHTA is also represented with interesting talks!

Unfortunately it was not possible to meet in person on Madeira and we are faced with a nicely organized online event. You can find a list of all IHTA’s talks below (The time zone of the program is UTC/GMT+0, Lisbon time zone):

Monday, October 25th, 2021

  • 15.40, Room PORTO MONIZ (room 5) – Investigating noise disturbance in open-plan offices using measurements of the room acoustics, and of the sound environment during occupancy – Manuj Yadav; Densil Cabrera; Jungsoo Kim; James Love; Jonothan Holmes; Janina Fels; Richard de Dear;[SS5]

Tuesday, October 26th, 2021

  • 9.20, Room PORTO SANTO (room 3) – Challenges in interactive sound insulation auralization – Michael Vorländer;[SS17]
  • 11.20, Room PORTO SANTO (room 3) – Voice support from acoustically retroreflective surfaces – Densil Cabrera; Jonothan Holmes1; Shuai Lu1; Mary Rapp1; Manuj Yadav; [SS22]
  • 17.20, Room PORTO MONIZ (room 5) – Combined assessment of cognitive and physiological parameters in child-appropriate listening experiments – Karin Loh; Christoph Hoog Antink; Sophie Nolden; Janina Fels;[SS21]

Wednesday, October 27th, 2021

  • 14:20, Room FUNCHAL (room 2) – On the Estimation of Directional Decay Times in Reverberation Rooms – Marco Berzborn; Jamilla Balint; Michael Vorländer;[SS9]
  • 14:40, Room FUNCHAL (room 2) – Modeling the edge effect for inverse determination of porous absorbers using feed forward neural networks – Mark Müller-Giebeler; Michael Vorländer;[SS9]
  • 15:20, Room PORTO MONIZ (room 5) – Eigenfrequency analysis of the vibrating horn in Ultrasonic Metal Welding – Elie Abi Raad; Jose Maria Uribe; Michael Vorländer;[GS29]

More information can be found here: http://www.spacustica.pt/euronoise2021/

Rayleigh Medal for Prof. Michael Vorländer

26. Oktober 2021 | von

The Institute for Hearing Technology and Acoustics is proud to announce that Prof. Michael Vorländer recently received the prestigious Rayleigh Medal, the highest award of the Institute of Acoustics. Congratulations!

The Rayleigh Medal is the Institute of Acoustics‘ premier award, awarded without regard to age to persons of undoubted renown for outstanding contributions to acoustics. The medal is named after John William Strutt, Third Baron Rayleigh (1842-1919), a very versatile physicist who conducted both experimental and theoretical research in virtually every branch of the subject. His book The Theory of Sound remains a landmark text in the development of acoustics.

Source: https://www.ioa.org.uk/about-us/awards

By receiving this award, Michael joins a list of very well-known acousticians such as Manfred Schröder, Hugo Fastl, Leo Beranek and his his predecessor Heinrich Kuttruff, who have also been awarded this medal.

Annual Meeting of the Priority Program AUDICTIVE

17. September 2021 | von

On September 16th, 2021 we met online for our annual meeting of our priority program SPP2236 – AUDICTIVE (www.spp2236-audictive.de): Auditory Cognition in interactive virtual Environments funded by the Deutsche Forschungsgemeinschaft (DFG) – German Research Foundation.

The day was very inspiring and the basis for special interests groups and lab visits could be established! Special thanks go to our moderator Ellen Gürtler.

We are looking forward to the upcoming months full of exciting collaborations!

Zoom_Meeting_Screenshot_ 2021-09-16_AUDICTIVE

Screenshot of the Zoom Meeting

DAGA 2021 poster award

23. August 2021 | von

At the DAGA Acoustics Annual Conference 2021, one of the poster awards has been given to the work presented by Jonas Heck, Josep Llorca-Bofí and Michael Vorländer, with the title: Hearing Architecture and Seeing Soundscapes: Methodological Approach of Individual Vocabulary Profiling to Evaluate Audiovisual Perception.


DAGA 2021 – Die Jahrestagung für Akustik

14. August 2021 | von

Nachdem im Jahr 2020 die in Hannover geplante DAGA-Tagung ausfallen musste, wurde die DAGA 2021 in den Monat August geschoben. Die Hoffnung, dass die Pandemie die Tagungsdurchführung nichtmehr beeinflusst, hat sich nicht erfüllt, aber immerhin kann die in Wien, vom 15. August bis zum 18. August 2021, stattfindene Konferenz als Hybrid-Veranstaltung durchgeführt werden, d.h. eine Teilnahme ist sowohl vor Ort, als auch Online möglich. Aufgrund der Anweisung der RWTH Aachen, Dienstreisen soweit es geht zu vermeiden, nehmen alle IHTA-Beschäftigten online an der Tagung teil und verzichten somit auf die Reise nach Wien.

Die Tagung beginnt am Sonntag mit drei Vorkolloquien, die meisten Sitzungen finden jedoch an den drei Haupttagen von Montag bis Mittwoch statt. Insgesamt ist das Institut für Hörtechnik und Akustik an 27 wissenschaftlichen Beiträgen beteiligt (21 Vorträge und 6 Poster).

Vortrag am Montag:

Jonathan Ehret, Lukas Aspöck, Andrea Bönsch, Janina Fels, Torsten W. Kuhlen Speech Source Directivity for Embodied Conversational Agents

Vorträge am Dienstag:

Michael Kohnen, Michael Vorländer Perceptional differences between Transaural, Ambisonics and Amplitude Panning
Christian Dreier, Michael Vorländer Einfluss lokaler Wetterschwankungen auf die psychoakustische Wahrnehmung von Fluglärm
Simon Kersten, Michael Vorländer FEM-Simulation of Bone Conduction in the Human Head: Influence of Geometrical and Material Parameters
Philipp Schäfer, Jonas Stienen, Michael Vorländer An open-source outdoor sound propagation framework with an application to aircraft noise auralization
Marco Berzborn, Jamilla Balint, Michael Vorländer On the Directional Distribution of Decay Constants in a Reverberation Room
Cosima Ermert, Shaima’A Doma, Janina Fels Examining the influence of controlled HRTF-variation on various distance metrics
Hark Braren, Janina Fels Evaluation of a Child-Appropriate Localization Paradigm
Thomas Deutsch, Lukas Vollmer, Janina Fels An Assessment of Spatial Fidelity of Higher-Order Ambisonics Reproduction Using the SCaLAr System
Lukas Vollmer, Janina Fels The Ventriloquist Illusion in Audiovisual Virtual Reality
Shaima’a Doma, Janina Fels Analysis of spatial cue distortion in HRTFs using a simplified head model
Christian Laufs, Andreas Herweg, Karin Loh, Janina Fels Zusammenhang zwischen dem psychoakustischen Parameter Schärfe und dem physiologischen Parameter Hautleitfähigkeit zur Beurteilung extra-auraler Lärmwirkung

Vorträge am Mittwoch:

Mark Müller-Giebeler, Michael Vorländer Inverse Material Determination for Small Porous Absorber Samples
Sven Herrmann, Mark Müller-Giebeler, Michael Vorländer Machine Learning zur Modellierung des Kanteneffekts bei Porösen Absorbern
Elie Abi Raad, Michael Vorländer Transfer function analysis of welding stage models in Ultrasonic Metal Welding
Sabine Schlittmeier, Lukas Aspöck, Janina Fels, Edina Fintor Erinnern eines in Ruhe gehörten Dialogs: Kolokalisierte Sprecher induzieren mehr Höranstrengung als räumlich separierte Sprecher
Janina Fels, Cosima Ermert, Jonathan Ehret, Chinthusa Mohanathasan, Andrea Bönsch, Torsten W. Kuhlen, Sabine Schlittmeier Listening to, and remembering conversations between two talkers: Cognitive research using embodied conversational agents in audiovisual virtual environments
Carolin Reimers, Larissa Leist, Stephan Fremerey, Alexander Raake, Maria Klatte, Janina Fels Examining Auditory Selective Attention in a Classroom Setting using Audiovisual Virtual Reality
Jamilla Balint, Janina Fels Research data management across disciplines in AUDICTIVE
Stephan Fremerey, Carolin Reimers, Larissa Leist, Jan Spilski, Maria Klatte, Janina Fels, Alexander Raake Generation of audiovisual immersive virtual environments to evaluate cognitive performance in classroom type scenarios
Margret Sibylle Engel, Maria Luiza de Ulhôa Carvalho, Janina Fels, William J. Davies Verification of emotional taxonomies on soundscape perception responses


Marco Berzborn, Fabian Brinkmann, Simon Kersten, Kai Jurgeit pyfar: Python Packages for Acoustics Research
Anne Heimes, Michael Vorländer A framework to conduct psychoacoustic experiments in virtual reality
Jonas Heck, Josep Llorca-Bofí, Michael Vorländer Hearing Architecture and Seeing Soundscapes: Methodological Approach of Individual Vocabulary Profiling to Evaluate Audiovisual Perception
Lukas Aspöck, Jonathan Ehret, Stefan Baumann, Andrea Bönsch, Christine T. Röhr, Martine Grice, Torsten W. Kuhlen, Janina Fels Prosodic and visual naturalness of dialogs presented by conversational virtual agents
Isabel Schiller, Jan Alber, Lukas Aspöck, Chinthusa Mohanathasan, Linda Wetzel, Sabine Schlittmeier Text-related immersion for varying auditory background scenes
Karin Loh, Julian Burger, Lukas Aspöck, Janina Fels EduRA database: room models based on room acoustic measurements in primary and preschools

Eine Übersicht über alle weiteren Beiträge der Tagung befinden sich in der der DAGA 2021 App.


New chairs for the EAA Young Acousticians Network (YAN) from IHTA

06. Juli 2021 | von

After many years of hard and fruitful work to maintain and to develop the products of European Acoustics Association, EAA Young Acousticians Network, YAN, Mathieu Gaborit is stepping back as the chair of the EAA YAN. In April this year, Elie Abi Raad has taken over the chair with Karin Loh as his co-chair. They will continue to evolve the community and presence of the YAN to provide an enriched network for young researchers within and beyond the European Acoustics Association (EAA).

We would like to thank Mathieu Gaborit and his team for the amazing work and congratulate Elie and Karin to their new challenges.

Award for family friendly leadership for Michael Vorländer

02. Juli 2021 | von

Michael Vorländer was honored the award for family friendly leadership „FAMOS 2020“!

He was nominated by his employees to honor the creation of a family friendly working atmosphere and his pragmatic solutions to urgent and every day problems.

Due to the pandemic the award ceremony was postponed to the 21st of june this year together with price winners from 2021.

More informaition on the award, the ceremony and a short video presenting the award winner can be found here.

Computational Acoustics Early Career Presenter Award

11. Juni 2021 | von

The contribution „Ray Tracing for efficient simulation of curved sound propagation paths: Towards real-time auralization of aircraft noise“ presented by our researcher Philipp Schäfer at the ASA Acoustics Virtually Everywhere Meeting in December 2020 was honored with the Computational Acoustics Early Career Presenter Award by the ASA.

In this work, the concept of aircraft noise auralization was presented and

evaluated with respect to the computational effort. A demonstration of the implemented aircraft noise auralization is included in this YouTube video.

Congratulations to Philipp for this prestigious award!



The ITA-Toolbox COMSOL interface

01. Juni 2021 | von

Acoustic simulations become a more and more important toolset for industry and research. For a few years now, our institute uses COMSOL Multiphysics for numerical simulations, e.g. FEM and BEM, in various fields of acoustics. For proper processing of simulation results, we usually rely on MATLAB and the ITA-Toolbox. Although COMSOL provides a MATLAB interface (LiveLink), using this for advanced processing is not straightforward. With this in mind, a user-friendly interface between the ITA-Toolbox and COMSOL was designed.

Key features

  • Starting the COMSOL server and connecting Matlab
  • A rich class structure representing a COMSOL model and its model nodes (geometry, physics, …)
  • Evaluation of FEM / BEM results at arbitrary points using the itaResult format without writing the results to hard disk
  • Quickly applying complex-valued, frequency-dependent data to COMSOL model (itaResult -> COMSOL interpolation)

Class structure of the ITA-Toolbox COMSOL interface

The class structure makes the usage of this interface intuitive and easily extendable. Similar to the actual COMSOL model, the itaComsolModel class contains nodes representing the geometry, physics, study and so on. Each node comes with functions to interact with the respective node. However, the current toolset also allows applying significant changes your model using a single line of Matlab code. For example, the user can apply a user-defined impedance to a pre-defined boundary selection or create a monopole source with a user-defined frequency response. In this case, multiple of those nodes are modified (e.g. geometry and physics).

If you are interested, the interface is part of the ITA-Toolbox, that can be downloaded or cloned from our Git repository. The related files can be found in the folder “ITA-Toolbox\applications\SoundFieldSimulation\Comsol\”. This also contains a set of small demos for getting started.


10. Mai 2021 | von

PAADtalks! are here: the interdisciplinary colloquium organized by the Person-focused Analysis of Architectural Design – PAAD group in collaboration with the Human Technolgy Center at the RWTH Aachen University. This series of academic lectures gathers humanities and technological approaches to architecture, and constructs collaboration networks for upcoming actions. There is no complete way to approach a person-focused analysis of architecture without an integral view. PAADtalks! spreads architectural research from the broad sense, beyond any reductionism or utopian pretension. Free access after registration via email.

Kahle: The Concert Hall – a machine for music? Or how to integrate acoustic design into architecture
June 3rd 2022

Lachenmayr: Applied room acoustics – How to build a concert hall
Jan 14th 2022

Chatterjee: The neuroaesthetics of architectural spaces
October 4th 2021

Kang: Designing soundscape in open public spaces: a framework and potentials
July 2nd 2021

Psarra: Contextual sensibility and influence in the architecture of Carlo Scarpa
May 21st 2021

Priority Program AUDICTIVE – Kick-Off-Meeting

02. Mai 2021 | von

Awesome day (on April 27, 2021) with the virtual Kick-Off-Meeting from the priority program SPP2236-AUDICTIVE: Auditory Cognition in interactive virtual Environments funded by the German Research Foundation (DFG).

Group picture of the AUDICTIVE participants - Zoom

Group picture of the AUDICTIVE participants – Zoom

We are very happy that we had a very interactive and successful meeting with great collaborators and partners within AUDICTIVE. Special thanks go to our moderator Ellen Gürtler and the graphic recorder Martina Grigoleit, who made this day very inspiring and extraordinary.

Graphic Recording of the Meeting by Martina Grigoleit

Graphic Recording of the Meeting by Martina Grigoleit

Brigitte-Gilles-Preis 2020

23. März 2021 | von

Die Initiative „Die interaktive Erlebniswelt der Akustik für große und kleine Kinder“ erhält den Brigitte-Gilles-Preis 2020 in der externen Kategorie. Koordiniert und betreut wird die Initiative vom Lehrstuhl für Hörtechnik und Akustik (IHTA).

In insgesamt vier Kategorien verlieh die RWTH Aachen den mit bis zu 2.500 Euro dotierten Brigitte-Gilles-Preis 2020. Er honoriert Projekte, Initiativen und eine Abschlussarbeit, welche die Bedingungen für Studium, Lehre und Forschung von Frauen an der Hochschule verbessern. Somit tragen sie dazu bei, die Zahl von Wissenschaftlerinnen und Studentinnen in Studiengängen mit geringem Frauenanteil zu erhöhen. (zur Pressemeldung der RWTH Aachen University)

Professorin Doris Klee (Mitte), Prorektorin für Personal und wissenschaftlichen Nachwuchs an der RWTH, überreichte den Brigitte-Gilles-Preis 2020 an Karin Loh und Janina Fels. (Foto: Andreas Schmitter)

Die externe Kategorie würdigt Projekte, die das Interesse von Schülerinnen an Mathematik, Informatik, Naturwissenschaften und Technik – kurz MINT genannt – fördern. Die Auszeichnung erhielt in diesem Jahr die Initiative „Die interaktive Erlebniswelt der Akustik für große und kleine Kinder“. Hierbei wurden Konzepte entwickelt, die Mädchen zwischen drei und zwölf Jahren das spielerische und interaktive Erkunden und Erlernen des Hörens und der Akustik ermöglichen. Die Koordination und Betreuung erfolgt durch Karin Loh vom“ Lehrstuhl und Institut für Hörtechnik und Akustik “ und wird geleitet von Professorin Janina Fels. (zur Pressemeldung der RWTH Aachen University)

Das „female Network Melaten“ durfte den Brigitte-Gilles-Preis 2020 in der internen Kategorie entgegennehmen.  Zudem wurde das Projekt „Hlumani – der Zukunft eine gerechte Chance geben“ mit einem Sonderpreis ausgezeichnet sowie Dr. Anna Stertz für ihre Abschlussarbeit.

Professorin Doris Klee (hinten Mitte), Prorektorin für Personal und wissenschaftlichen Nachwuchs an der RWTH, überreichte die Brigitte-Gilles-Preise 2020. (Foto: Andreas Schmitter)

Das IHTA gratuliert allen Preisträgerinnen sehr herzlich!

New chairs and council members for the EAA TC on Psychological and Physiological Acoustics

17. Dezember 2020 | von

During this year’s e-Forum Acusticum 2020, the EAA Technical Committee on Psychological and Physiological (TC P&P) Acoustics has elected their new (co-) chairs and council members for the next three years.

Univ.-Prof. Dr.-Ing Janina Fels, RWTH Aachen will take over the co-chair. The ITA team extends warm congratulations to Prof. Fels on her election!

The TC P&P (https://euracoustics.org/technical-committees/tc-on-psychological-and-physiological-acoustics) connects European-wide researchers of psychophysics and physiology of the auditory system, and modellers using an approach based on neural structures in the auditory system (i.e., use a systems approach).

The new elected members in the TC P&P are

  • Piotr Majdak, Vienna (TC chair)
  • Janina Fels, Aachen (TC co-chair)
  • TC council members:
    • Sarah Verhulst, Ghent
    • Mathieu Lavandier, Lyon
    • Andre Fiebig, Berlin
    • Armin Taghipour, Luzern
    • Armin Kohlrausch, Eindhoven