· M. Wölfel and J. McDonough
Distant Speech Recognition
J. Wiley & Sons, 2009, ISBN 0470517042

· M. Wölfel
Robust Automatic Transcription of Lectures
Universität Karlsruhe Universitätsbibliothek, 2009,
ISBN 9783866443945

Book Chapters

· M. Wölfel
Non-distracting Feedback in Artificial Intelligence Supported Learning
In: Pinkwart N., Liu S. (eds) Artificial Intelligence Supported Educational Technologies. Advances in Analytics for Learning and Teaching. Springer, 30 April 2020

· M. Wölfel
Der smarte Assistent
in: Smartphone-Ästhetik. Transdisziplinäre Zugänge zur Philosophie and Gestaltung mobiler Medien. Hrsg. v. Oliver Ruf Bielefeld: transcript (Medien- and Gestaltungsästhetik; 1), 2018, ISBN 978-3-8376-3529-4

· M. C. Braun, S. Beuck, M. Wölfel, A. Scheurer
Investigating Multimodal Warnings for Distracted Smartphone Users on the Move in Potentially Dangerous Situations.
in: Transactions on Computational Science XXXII (pp. 1-14). Springer, Berlin, Heidelberg.

· U. Gehmann, M. Wölfel, M. Johansson
Ideal Space
in: Time Space Existence, GAA Foandation, 2016, ISBN 9789490784225

· U. Gehmann, M. Zampella, M. Wölfel
Formatization Unleashed
in: Analyzing Art, Culture, and Design in the Digital Age by Gianluca Mura (Editors), IGI-Global, 2015, ISBN 9781466686793

· M. Wölfel
From Signals to Speech Features by Digital Signal Processing
in Noise-Robust Automatic Speech Recognition by T. Virtanen, B. R. Singh and B. Raj (Editors), J. Wiley & Sons, 2011, ISBN 9781119970880

· G. Potamianos, L. Lamel, M. Wölfel, J. Huang, E. Marcheret, C. Barras, X. Zhu, J. McDonough, J. Hernando, D. Macho, C. Nadeu
Automatic Speech Recognition
in Computers in the Human Interaction Loop by A. Waibel and R. Stiefelhagen (Editors), Springer, 2009, ISBN 1848820534

· A. Waibel, K. Bernardin and M. Wölfel
Computer-Supported Human-Human Multilingual Communication
in 50 Years of Artificial Intelligence by M. Lungarella, F. Iida, J.
Bongard and R. Pfeifer (Editors), Springer, 2008, ISBN 3540772952


· M. Wölfel, D. Hepperle, A. Siess, J. Deuchler
Staging Location-Based Virtual Reality to Improve Immersive Experiences
EAI Endorsed Transactions on Creative Technologies, Issue 21, 2020

· K. German, M. Limm, M. Wölfel, S. Helmerdig
Towards Artificial Intelligence Serving as an Inspiring Co-Creation Partner
EAI Endorsed Transactions on Creative Technologies, Issue 19, 2019

· D. Hepperle, Y. Weiß, A. Siess, M. Wölfel
2D, 3D or speech? A case study on which user interface is preferable for what kind of object interaction in immersive virtual reality
Computers & Graphics 82, 321-331, 2019

· A. Siess, M. Wölfel
User color temperature preferences in immersive virtual realities
Computers & Graphics 81, 20-31, 2019

· M. Wölfel
Rethinking text: Unleashing the full potential of media to provide a better reading experience
International Journal of Art, Culture and Design Technologies (IJACDT), 2018

· M. Wölfel, A. Sieß, D. Hepperle, N. Häffner and H. Rude
Ideale Städte – Furtwanger Studierende präsentieren ihre Arbeiten auf der Architektur-Biennale in Venedig 2016
horizonte 49, April 2017

· M. Wölfel
Kinect – Eine Revolution nicht nur im Kinderzimmer
Electrosuisse, Heft 10/2012

· M. Wölfel
Kinetic Space – 3D Gestenerkennung für Dich and Mich

· S. Stüker, T. Herrmann, J. Niehus. M. Wölfel, M. Kolss
Research Opportunities in Automatic Speech-to-Speech Translation IEEE Potentials magazine, June 2012

· M. Wölfel
Signal adaptive spectral envelope estimation for robust speech recognition
Speech Communication, Vol. 51, Issue 6, June 2009, pp. 551-561

· M. Wölfel
Enhanced speech features by single channel joint compensation of noise and reverberation
IEEE Transactions on Audio, Speech and Language Processing, 17(2):312-323, 2009

· M. Wölfel
Elektronische Dolmetscher – Aktueller Stand der Automatischen

Electrosuisse, Heft 11/2009

· J. McDonough, M. Wölfel and E. Stoimenov
On maximum mutual information speaker-adapted training
Computer Speech and Language, Elsevier, 22(2):130-147, 2008

· K. Kumatani, T. Gehrig, U. Mayer, E. Stoimenov, J. McDonough and M. Wölfel
Adaptive beamforming with a minimum mutual information criterion
IEEE Transactions on Audio, Speech and Language Processing, 15:2527-2541, 2007

· R. Stiefelhagen, K. Bernardin, H.K. Ekenel, J. McDonough, K. Nickel, M. Voit and M. Wölfel
Audio-visual perception of a lecturer in a smart seminar room
Signal Processing, Elsevier, 86(12), Dec. 2006

· M. Wölfel and J.W. McDonough
Minimum variance distortionless response spectral estimation: review and refinements
IEEE Signal Processing Magazine, 22(5):117-126, Sept. 2005


· M Wölfel
Artificial Intelligence Assisted CreationFostering Inspiration & Raising Moral Issues

· D Hepperle, A Siess, M Wölfel
Staging Virtual Reality Exhibits for Bystander Involvement in Semi-Public Spaces
ArtsIT 2019 and DLI 2019

· Kevin German, Marco Limm, Matthias Wölfel, Silke Helmerdig
Co-Designing Object Shapes with Artificial Intelligence
ArtsIT 2019 and DLI 2019

· M Wölfel, M Braun, S Beuck
How does Augmented Reality Improve the Play Experience in Current Augmented Reality Enhanced Smartphone Games?
International Conference on Cyberworlds (CW), 407-410, 2019

· Matthias Wölfel, Anna Reinhardt
Immersive Shopping Presentation of Goods in Virtual Reality
CERC, S. 119-130., 2019

· Daniel Hepperle, Andreas Sieß, Matthias Wölfel, Michael Johansson
Worldmaking: Designing for Audience Participation, Immersion and Interaction in Virtual and Real Spaces
ArtsIT 2018, DLI 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 265. Springer, 2019

· Yannick Weiß, Daniel Hepperle, Andreas Sieß, Matthias Wölfel
What User Interface to Use for Virtual Reality? 2D, 3D or Speech–A User Study
International Conference on Cyberworlds (CW), 2018, 3-5 October, Singapore

· Andreas Sieß, Matthias Wölfel
Color Preference Differences between Head Mounted Displays and PC Screens
International Conference on Cyberworlds (CW), 2018, 3-5 October, Singapore

· Matthias Wölfel and Joey Schubert
Effects of Electrical Pain Stimuli on Immersion in Virtual Reality International Conference on Cyberworlds (CW), 2018, 3-5 October, Singapore

· Andreas Sieß, Sandra Beuck, Matthias Wölfel
Virtual Reality – Quo Vadis? How to Address the Complete Audience of an Emerging Technology
Collaborative European Research Conference, 22 September 2017, Karlsruhe

· Matthias Wölfel, David Hill
Acoustic Reading Experience: Aligning Sound Events to Text Using Gaze Tracking to Improve Immersion in Reading
Collaborative European Research Conference, 22 September 2017, Karlsruhe

· Manuel Conzelmann, Sabrina Lange, Matthias Wölfe
Fostering Humanto-Human Communication and Collaboration in Physical Space by Playful Augmentation and Information Inequality
Collaborative European Research Conference, 22 September 2017, Karlsruhe

· Daniel Hepperle, Matthias Wölfel
Do you feel what you see? Multimodal perception in virtual reality
ACM Symposium on Virtual Reality Software and Technology, Gothenburg, Sweden, November 8-10, 2017

· Sandra Beuck, Alexander Scheurer, Matthias Wölfel
Willingness of Distracted Smartphone Users on the Move to be Interrupted in Potentially Dangerous Situations
International Conference on Cyberworlds (CW), 2017, 20-22 September, Chester, UK

· M. Wölfel
Acceptance of Dynamic Feedback to Poor Sitting Habits by Anthropomorphic Objects
PervasiveHealth 2017, At Barcelona, Spain, 2017

· M. Wölfel
Activating People with Dementia using Natural User Interface Interaction on a Surface Computer
PervasiveHealth 2017, At Barcelona, Spain, 2017

· M. Wölfel, T. Schlippe, A. Stitz
Voice driven type design
International Conference on Speech Technology and Human-Computer Dialogue (SpeD), 2015

· A. Sieß, K. Hübel, D. Hepperle, A. Dronov, C. Hufnagel, J. Aktun, M. Wölfel
Incentive Guidance of Crowds by Smart City Lights
Mensch and Computer 2015–Proceedings

· A. Stitz, M. Wölfel
Reagierende Schriftzeichen
Mensch and Computer 2015–Proceedings

· M. Wölfel, U. Gehmann
To Be There, or Not to Be There, that is the Question
Cyberworlds 2015, At Visby, Sweden

· A. Sieß, K. Hübel, D. Hepperle, A. Dronov, C. Hufnagel, J. Aktun, M. Wölfel
Hybrid City Lighting – Improving Pedestrians’ Safety through Proactive Street Lighting
Cyberworlds 2015, At Visby, Sweden

· M. Wölfel, A. Stitz
Responsive Type – Introducing Self-Adjusting Graphic Characters
Cyberworlds 2015, At Visby, Sweden

· M. Wölfel, L. Bucchino
Increasing Customers’ Attention using Implicit and Explicit Interaction in Urban Advertisement
Proceedings of the 16th International Conference on Multimodal Interaction 2014

· M. Wölfel
Interacting with Ads in Hybrid Urban Space
Cyberworlds 2014, At Santander, Spain

· U. Gehmann, M. Zampella, M. Wölfel
Liberated Formatization
Cyberworlds 2014, At Santander, Spain

· M. Wölfel, U. Gehmann, M. Zampella
Rethinking Interaction Design for Hybrid Urban Space
city | data | future : the UrbanIxD Symposium 2014, Venice, Italy

· M. Wölfel
3D Gestenerkennung als moderne Mensch Maschine Schnittstelle
uDay 11, Dornbirn, Österreich 2013

· L. Bucchino and M. Wölfel
Responsive Advertising – Effektivitätssteigerung von Werbung im öffentlichen Raum durch passive and aktive Nutzerinteraktion
uDay 11, Dornbirn, Österreich 2013

· M. Wölfel, B. Lintermann and N. Völzow
Using Tangible Surfaces in Opera
The Interactive Media Arts Conference (IMAC) 2011

· F. Kraft, K. Kilgour, R. Saam, S. Stüker, M. Wölfel, T. Asfour, and A. Waibel
Towards Social Integration of Humanoid Robots by Conversational Concept Learning
10th IEEE-RAS International Conference on Humanoid Robots (HUMANOIDS) 2010

· M. Wölfel, Q. Yang, Q. Jin, and T. Schultz
Speaker Identification using Warped MVDR Cepstral Features
Interspeech 2009

· M. Wölfel, M. Kolss, F. Kraft, J. Niehues, M. Paulik, and A. Waibel
Simultaneous machine translation of German lectures into English: Investigating research challenges for the future
SLT 2008

· M. Kolss, M. Wölfel, M. Kraft, J. Niehues, M. Paulik, and A. Waibel
Simultaneous German-English Lecture Translation
IWSLT 2008

· S. Ochs, M. Wölfel, and S. Stüker
Verbesserung der automatischen Transkription von englischen Wörtern in deutschen Vorlesungen
ESSV 2008

· J. McDonough, M. Wölfel, K. Kumatani, B. Rauch, F. Faubel, and D. Klakow
Distant Speech Recognition: No Black Boxes
ITG-Fachtagung 2008

· M. Wölfel
A Joint Particle Filter and Multi-Step Linear Prediction Framework to Provide Enhanced Speech Features Prior to Automatic Recognition
HSCMA 2008

· M. Wölfel
Integration of the Predicted Walk Model Estimate into the Particle Filter Framework

· M. Wölfel
Predicted walk with Correlation in Particle Filter Speech Feature Enhancement for Robust Automatic Speech Recognition

· S. Burger, K. Laskowski, and M. Wölfel
A comparative cross-domain study of the occurrence of laughter in meeting and seminar corpora
LREC 2008

· K. Laskowski, M. Wölfel, M. Heldner, and J. Edland
Computing the fandamental frequency variation spectrum in conversational spoken dialogue systems
Acoustics 2008

· K. Kumatani, J. McDonough, U. Mayer, T. Gehrig, E. Stoimenov, M. Wölfel
Minimum Mutual Information Beamforming for Simultaneous Active Speakers
ASRU 2007

· A. Waibel, K. Bernardin, and M. Wölfel
Computer-Supported Human-Human Multilingual Communication
Interspeech 2007

· M. Wölfel
Channel Selection by Class Separability Measures for Automatic Transcriptions on Distant Microphones
Interspeech 2007

· S. Stüker, C.Fügen, F. Kraft, and M. Wölfel
The ISL 2007 English Speech Transcription System for European Parliament Speeches
Interspeech 2007

· M. Wölfel, S. Stüker, and F. Kraft
The ISL RT-07 Speech-to-Text System
Proc. of the Rich Transcription 2007 Meeting Recognition Evaluation Workshop (RT-07), Baltimore, USA, 2007

· F. Kraft and M. Wölfel
Humanoid robot noise suppression by particle filters for improved automatic speech recognition accuracy
IEEE/RSJ Conf. on Intelligent Robots and Systems (IROS), 2007

· J. McDonough, K. Kumatani, T. Gehrig, E. Stoimenov, U. Mayer, Stefan Schacht, M. Wölfel and Dietrich Klakow
To Separate Speech! A System for Recognizing Simultaneous Speech
MLMI 2007

· F. Faubel and M. Wölfel
Overcoming the Vector Taylor Series Approximation in Speech Feature Enhancement – A Particle Filter Approach

· M. Wölfel and F. Faubel
Considering Uncertainty by Particle Filter Enhanced Speech Features in Large Vocabulary Continuous Speech Recognition

· M. Wölfel, C.Fügen, S. Ikbal, and J. W. McDonough
Multi-Source Far-Distance Microphone Selection and Combination for Automatic Transcription of Lectures
Interspeech 2006

· F. Faubel and M. Wölfel
Coupling Particle Filters with Automatic Speech Recognition for Speech Feature Enhancement
Interspeech 2006

· T. Gehrig, U. Klee, J. McDonough, S. Ikbal, M. Wölfel, C.Fügen
Tracking and Beamforming for Multiple Simultaneous Speakers with Probabilistic Data Association Filters
Interspeech 2006

· C.Fügen, M. Wölfel, J. W. McDonough, S. Ikbal, F. Kraft, K. Laskowski, M. Ostendorf, S. Stüker, K. Kumatani
Advances in Lecture Recognition: The ISL RT-06S Evaluation System
Interspeech 2006

· S. Stüker, C.Fügen, S. Burger, M. Wölfel
Cross-System Adaptation and Combination for Continuous Speech Recognition: The Influence of Phoneme Set and Acoustic Front-End
Interspeech 2006

· M. Wölfel
Warped-twice minimum variance distortionless response spectral estimation

· S. Stüker, C.Fügen, R. Hsiao, S. Ikbal, Q. Jin, F. Kraft, M. Paulik, M. Raab, Y.C. Tam, and M. Wölfel
The ISL TC-STAR Spring 2006 ASR Evaluation Systems
TC-STAR Workshop on Speech-to-Speech Translation 2006

· M. Wölfel and H.K. Ekenel
Feature Weighted Mahalanobis Distance: Improved Robustness for Gaussian Classifiers

· M. Wölfel
Frame Based Model Order Selection of Spectral Envelopes
Interspeech 2005

· M. Wölfel and J. McDonough
Combining Multi-Source Far Distance Speech Recognition Strategies: Beamforming, Blind Channel and Confusion Network CombinationInterspeech 2005

· M. Wölfel, K. Nickel, J. McDonough
Microphone Array Driven Speech Recognition: Influence of Localization on the Word Error Rate
MLMI 2005

· F. Metze, P. Gieselmann, H. Holzapfel, T. Kluge, I. Rogina, A. Waibel, and M. Wölfel J. Crowley, P. Reignier, and D. Vaufreydaz F. Berard, B. Cohen, J. Coutaz, and S. Rouillard V. Arranz, M. Bertran, and H. Rodriguez
The “FAME” Interactive Space
MLMI 2005

· Macho, D.; Padrell, J.; Abad, A.; Nadeu, C.; Hernando, J.; McDonough, J.; Wölfel, M.; Klee, U.; Omologo, M.; Brutti, A.; Svaizer, P.; Potamianos, G.; Chu, S.M.
Automatic Speech Activity Detection, Source Localization, and Speech Recognition on the CHIL Seminar Corpus
ICME 2005

· M.Dambier, J. Hinkelbein, M. Wölfel
Spracherkennung im Cockpit
Fliergermagazin 3/2005

· M. Wölfel
Multiquellentraining: Chancen für kleine Trainingsmengen in der
automatischen Spracherkennung
Elektronische Sprachsignalverarbeitung ESSV 2004

· M.Dambier, M. Wölfel and C.Fügen
Robuste Spracherkennung im Cockpit von Luftfahrzeugen
Elektronische Sprachsignalverarbeitung ESSV 2004

· M. Wölfel
Speaker Dependent Model Order Selection of Spectral Envelopes
ICSLP 2004

· D. Raub, J. McDonough, M. Wölfel
A Cepstral Domain Maximum Likelihood Beamformer for Speech Recognition
ICSLP 2004

· M. Wölfel, J. McDonough, A. Waibel
Minimum Variance Distortionless Response on a Warped Frequency Scale
Eurospeech 2003

· M. Wölfel
Mel-Frequenzanpassung der Minimum Variance Distortionless Response Einhüllenden
Elektronische Sprachsignalverarbeitung ESSV 2003

· M. Wölfel, J. McDonough, A. Waibel
Warping and scaling of the minimum variance distortionless response
ASRU 2003