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Former Research Assistant/PhD Student
Research Group: Signal Processing and Virtual Acoustics
Spatial Audio Blog: spatialaudio.net
Bio
Matthias Geier received his PhD from the University of Rostock in 2024. From 2012 to 2016 he was working as a research assistant (Wissenschaftlicher Mitarbeiter) at our institute. From 2007 to 2012 Matthias Geier was working as a research assistant (Wissenschaftlicher Mitarbeiter) at the Quality and Usability Lab of Deutsche Telekom Laboratories, TU Berlin. He studied Electrical Engineering/Sound Engineering at University of Technology and University of Music and Dramatic Arts in Graz, Austria. He received his diploma degree (Diplom-Ingenieur) in 2006.
Publications of Matthias Geier
Articles:
1.
Avni, A.; Wierstorf, H.; Geier, M.; Ahrens, J.; Spors, S.; Rafaely, B.:
Spatial perception of sound fields recorded by spherical microphone arrays with varying spatial resolution. In: Journal of the Acoustical Society of America (JASA), vol. 133, no. 5 (5/2013), pp. 2711-2721
doi:10.1121/1.4795780
Spatial perception of sound fields recorded by spherical microphone arrays with varying spatial resolution. In: Journal of the Acoustical Society of America (JASA), vol. 133, no. 5 (5/2013), pp. 2711-2721
doi:10.1121/1.4795780
2.
Wierstorf, H.; Raake, A.; Geier, M.; Spors, S.:
Perception of Focused Sources in Wave Field Synthesis. In: Journal of the Audio Engineering Society, vol. 61, no. 1/2 (1/2013), pp. 5-16
Perception of Focused Sources in Wave Field Synthesis. In: Journal of the Audio Engineering Society, vol. 61, no. 1/2 (1/2013), pp. 5-16
3.
Geier, M.; Ahrens, J.; Spors, S.:
Object-based Audio Reproduction and the Audio Scene Description Format. In: Organized Sound, vol. 15, no. 3 (2010), pp. 219-227
doi:10.1017/S1355771810000324
Object-based Audio Reproduction and the Audio Scene Description Format. In: Organized Sound, vol. 15, no. 3 (2010), pp. 219-227
doi:10.1017/S1355771810000324
Contributions to Collections:
4.
Geier, M.; Spors, S.; Weinzierl, S.:
The Future of Audio Reproduction: Technology - Formats - Applications. Detyniecki, M.; Leiner, U.; Nürnberger, A. (ed.): Adaptive Multimedia Retrieval. Identifying, Summarizing, and Recommending Image and Music. pp. 1-17, Springer, 2010
ISBN: 978-3-642-14757-9
The Future of Audio Reproduction: Technology - Formats - Applications. Detyniecki, M.; Leiner, U.; Nürnberger, A. (ed.): Adaptive Multimedia Retrieval. Identifying, Summarizing, and Recommending Image and Music. pp. 1-17, Springer, 2010
ISBN: 978-3-642-14757-9
Contributions to Proceedings:
5.
Winter, F.; Wierstorf, H.; Geier, M.; Hahn, N.; Schultz, F.; Spors, S.:
Open Source Sound Field Synthesis Toolbox. German Annual Conference on Acoustics (DAGA), Rostock, Germany, 2019
Open Source Sound Field Synthesis Toolbox. German Annual Conference on Acoustics (DAGA), Rostock, Germany, 2019
6.
Spors, S.; Wierstorf, H.; Geier, M.; Winter, F.; Hahn, N.; Schultz, F.:
Software Tools and Workflows for Open Science. German Annual Conference on Acoustics (DAGA), Rostock, Germany, 2019
Software Tools and Workflows for Open Science. German Annual Conference on Acoustics (DAGA), Rostock, Germany, 2019
7.
Ahrens, J.; Geier, M.; Bartz, P.; Spors, S.:
The Interactive SoundScape Renderer for Loudspeaker- and Headphone-Based Spatial Sound Presentation. ACM Symposium on Virtual Reality Software and Technology (VRST), Gothenburg, Sweden, 2017
doi:10.1145/3139131.3141779
The Interactive SoundScape Renderer for Loudspeaker- and Headphone-Based Spatial Sound Presentation. ACM Symposium on Virtual Reality Software and Technology (VRST), Gothenburg, Sweden, 2017
doi:10.1145/3139131.3141779
8.
Geier, M.; Carpentier, T.; Noisternig, M.; Warusfel, O.:
Software tools for object-based audio production using the Audio Definition Model (ITU-R Recommendation BS.2076). 4th International Conference on Spatial Audio (ICSA), Graz, Austria, 2017
Software tools for object-based audio production using the Audio Definition Model (ITU-R Recommendation BS.2076). 4th International Conference on Spatial Audio (ICSA), Graz, Austria, 2017
9.
Erbes, V.; Geier, M.; Wierstorf, H.; Spors, S.:
Free database of low-frequency corrected head-related transfer functions and headphone compensation filters. 142nd Convention of the Audio Engineering Society, Berlin, Germany, 2017
Free database of low-frequency corrected head-related transfer functions and headphone compensation filters. 142nd Convention of the Audio Engineering Society, Berlin, Germany, 2017
10.
Wierstorf, H.; Spors, S.; Geier, M.:
Wissenschaftliche Erkenntnis, Reproduzierbarkeit und praktische Lösungen in der Akustik. German Annual Conference on Acoustics (DAGA), Kiel, Germany, 2017
Wissenschaftliche Erkenntnis, Reproduzierbarkeit und praktische Lösungen in der Akustik. German Annual Conference on Acoustics (DAGA), Kiel, Germany, 2017
11.
Spors, S.; Geier, M.; Wierstorf, H.:
Towards Open Science in Acoustics: Foundations and Best Practices. German Annual Conference on Acoustics (DAGA), pp. 218-221, Kiel, Germany, 2017
Towards Open Science in Acoustics: Foundations and Best Practices. German Annual Conference on Acoustics (DAGA), pp. 218-221, Kiel, Germany, 2017
12.
Erbes, V.; Geier, M.; Weinzierl, S.; Spors, S.:
Database of single-channel and binaural room impulse responses of a 64-channel loudspeaker array. 138th Convention of the Audio Engineering Society, Warsaw, Poland, 2015
Database of single-channel and binaural room impulse responses of a 64-channel loudspeaker array. 138th Convention of the Audio Engineering Society, Warsaw, Poland, 2015
13.
Mueller, J.; Geier, M.; Dicke, C.; Spors, S.:
The BoomRoom: Mid-air Direct Interaction with Virtual Sound Sources. CHI Conference on Human Factors in Computing Systems, Toronto, Canada, 2014
The BoomRoom: Mid-air Direct Interaction with Virtual Sound Sources. CHI Conference on Human Factors in Computing Systems, Toronto, Canada, 2014
14.
Weiss, B.; Burkhardt, F.; Geier, M.:
Towards perceptual dimensions of speakers' voices: Eliciting individual descriptions. Workshop on Affective Social Speech Signals (WASSS 2013), Grenoble, France, 2013
Towards perceptual dimensions of speakers' voices: Eliciting individual descriptions. Workshop on Affective Social Speech Signals (WASSS 2013), Grenoble, France, 2013
15.
Geier, M.; Spors, S.:
Spatial Audio Reproduction with the SoundScape Renderer. 27th Tonmeistertagung - VDT International Convention, Cologne, Germany, 2012
Spatial Audio Reproduction with the SoundScape Renderer. 27th Tonmeistertagung - VDT International Convention, Cologne, Germany, 2012
16.
Geier, M.; Hohn, T.; Spors, S.:
An Open Source C++ Framework for Multithreaded Realtime Multichannel Audio Applications. Linux Audio Conference, Stanford, USA, 2012
An Open Source C++ Framework for Multithreaded Realtime Multichannel Audio Applications. Linux Audio Conference, Stanford, USA, 2012
17.
Spors, S.; Wierstorf, H.; Geier, M.:
Comparison of Modal versus Delay-and-Sum Beamforming in the Context of Data-based Binaural Synthesis. 132nd Convention of the Audio Engineering Society, Budapest, Hungary, 2012
Comparison of Modal versus Delay-and-Sum Beamforming in the Context of Data-based Binaural Synthesis. 132nd Convention of the Audio Engineering Society, Budapest, Hungary, 2012
18.
Skowronek, J.; Raake, A.; Hoeldtke, K.; Geier, M.:
Speech Recordings for Systematic Assessment of Multi-party Conferencing. Forum Acusticum, Aalborg, Denmark, 2011
Speech Recordings for Systematic Assessment of Multi-party Conferencing. Forum Acusticum, Aalborg, Denmark, 2011
19.
Wierstorf, H.; Geier, M.; Raake, A.; Spors, S.:
A Free Database of Head Related Impulse Response Measurements in the Horizontal Plane with Multiple Distances. 130th Convention of the Audio Engineering Society, London, UK, 2011
A Free Database of Head Related Impulse Response Measurements in the Horizontal Plane with Multiple Distances. 130th Convention of the Audio Engineering Society, London, UK, 2011
20.
Wierstorf, H.; Geier, M.; Spors, S.:
Reducing Artifacts of Focused Sources in Wave Field Synthesis. 129th Convention of the Audio Engineering Society, San Fransisco, UK, 2010
Reducing Artifacts of Focused Sources in Wave Field Synthesis. 129th Convention of the Audio Engineering Society, San Fransisco, UK, 2010
21.
Raake, A.; Schlegel, C.; Hoeldtke, K.; Geier, M.; Ahrens, J.:
Listening and Conversational Quality of Spatial Audio Conferencing. 40th International AES Conference, Tokyo, Japan, 2010
Listening and Conversational Quality of Spatial Audio Conferencing. 40th International AES Conference, Tokyo, Japan, 2010
22.
Ahrens, J.; Geier, M.; Spors, S.:
Perceptual Assessment of Delay Accuracy and Loudspeaker Misplacement in Wave Field Synthesis. 128th Convention of the Audio Engineering Society, London, UK, 2010
Perceptual Assessment of Delay Accuracy and Loudspeaker Misplacement in Wave Field Synthesis. 128th Convention of the Audio Engineering Society, London, UK, 2010
23.
Geier, M.; Wierstorf, H.; Ahrens, J.; Wechsung, I.; Raake, A.; Spors, S.:
Perceptual Evaluation of Focused Sources in Wave Field Synthesis. 128th Convention of the Audio Engineering Society, London, UK, 2010
Perceptual Evaluation of Focused Sources in Wave Field Synthesis. 128th Convention of the Audio Engineering Society, London, UK, 2010
24.
Raake, A.; Schlegel, C.; Geier, M.; Ahrens, J.:
Hör- und Konversationstests zur Untersuchung der Vorteile Räumlicher Audiokonferenzen. German Annual Conference on Acoustics (DAGA), pp. 1071-1072, Berlin, Germany, 2010
Hör- und Konversationstests zur Untersuchung der Vorteile Räumlicher Audiokonferenzen. German Annual Conference on Acoustics (DAGA), pp. 1071-1072, Berlin, Germany, 2010
25.
Ahrens, J.; Geier, M.; Spors, S.:
Perceptual Comparison of Wave Field Synthesis Implemented with Integer and Fractional Delays. German Annual Conference on Acoustics (DAGA), Berlin, Germany, 2010
ISBN: 978-3-9808659-8-2
Perceptual Comparison of Wave Field Synthesis Implemented with Integer and Fractional Delays. German Annual Conference on Acoustics (DAGA), Berlin, Germany, 2010
ISBN: 978-3-9808659-8-2
26.
Geier, M.; Spors, S.:
Conducting Psychoacoustic Experiments with the SoundScape Renderer. 9. ITG Fachtagung Sprachkommunikation, Bochum, Germany, 2010
Conducting Psychoacoustic Experiments with the SoundScape Renderer. 9. ITG Fachtagung Sprachkommunikation, Bochum, Germany, 2010
27.
Spors, S.; Wierstorf, H.; Geier, M.; Ahrens, J.:
Physical and Perceptual Properties of Focused Sources in Wave Field Synthesis. 127th Convention of the Audio Engineering Society, New York, USA, 2009
Physical and Perceptual Properties of Focused Sources in Wave Field Synthesis. 127th Convention of the Audio Engineering Society, New York, USA, 2009
28.
Geier, M.; Ahrens, J.; Spors, S.:
Binaural Monitoring of Massive Multichannel Sound Reproduction Systems using Model-based Rendering. NAG-DAGA International Conference on Acoustics, Rotterdam, The Netherlands, 2009
Binaural Monitoring of Massive Multichannel Sound Reproduction Systems using Model-based Rendering. NAG-DAGA International Conference on Acoustics, Rotterdam, The Netherlands, 2009
29.
Gierlich, H.-W.; Poschen, S.; Kettler, F.; Raake, A.; Spors, S.; Geier, M.:
Echo Perception in Wideband Telecommunication Scenarios - Comparison to E-model's Narrowband Echo Findings. ITU-T workshop on 'From Speech to Audio: bandwidth extension, binaural perception', Lannion, France, 2008
Echo Perception in Wideband Telecommunication Scenarios - Comparison to E-model's Narrowband Echo Findings. ITU-T workshop on 'From Speech to Audio: bandwidth extension, binaural perception', Lannion, France, 2008
30.
Kendall, G.; Peters, N.; Geier, M.:
Towards an Interchange Format for Spatial Audio Scenes. International Computer Music Conference (ICMC), Belfast, UK, 2008
Towards an Interchange Format for Spatial Audio Scenes. International Computer Music Conference (ICMC), Belfast, UK, 2008
31.
Geier, M.; Spors, S.:
ASDF: Audio Scene Description Format. International Computer Music Conference (ICMC), Belfast, UK, 2008
ASDF: Audio Scene Description Format. International Computer Music Conference (ICMC), Belfast, UK, 2008
32.
Geier, M.; Ahrens, J.; Spors, S.:
The SoundScape Renderer: A Unified Spatial Audio Reproduction Framework for Arbitrary Rendering Methods. 124th Convention of the Audio Engineering Society, Amsterdam, The Netherlands, 2008
The SoundScape Renderer: A Unified Spatial Audio Reproduction Framework for Arbitrary Rendering Methods. 124th Convention of the Audio Engineering Society, Amsterdam, The Netherlands, 2008
33.
Bredies, K.; Mann, N. A.; Ahrens, J.; Geier, M.; Spors, S.; Nischt, M.:
The Multi-Touch SoundScape Renderer. 9th International Working Conference on Advanced Visual Interfaces, Napoli, Italy, 2008
The Multi-Touch SoundScape Renderer. 9th International Working Conference on Advanced Visual Interfaces, Napoli, Italy, 2008
34.
Geier, M.; Ahrens, J.; Spors, S.:
ASDF: Ein XML Format zur Beschreibung von virtuellen 3D-Audioszenen. 34rd German Annual Conference on Acoustics (DAGA), Dresden, Germany, 2008
ASDF: Ein XML Format zur Beschreibung von virtuellen 3D-Audioszenen. 34rd German Annual Conference on Acoustics (DAGA), Dresden, Germany, 2008
35.
Geier, M.; Ahrens, J.; Möhl, A.; Spors, S.; Loh, J.; Bredies, K.:
The Soundscape Renderer: A Versatile Framework for Spatial Audio Reproduction. Proceedings of the DEGA WFS Symposium, Ilmenau, Germany, 2007
The Soundscape Renderer: A Versatile Framework for Spatial Audio Reproduction. Proceedings of the DEGA WFS Symposium, Ilmenau, Germany, 2007
PhD thesis:
36.
Geier, M.:
Describing Three-Dimensional Movements in an Audio Scene Authoring Format. Universität Rostock, 2023
doi:10.18453/rosdok_id00004604
Describing Three-Dimensional Movements in an Audio Scene Authoring Format. Universität Rostock, 2023
doi:10.18453/rosdok_id00004604