Dr.-Ing. Christiane Antweiler
Academic Director
Room: 304
+49 241 80-26983
+49 241 80-22254
antweiler(at)iks.rwth-aachen.de
Main focus:
- Algorithms for digital speech and audioprocessing
- Multi-channel system identification with perfect sequences
- Measurement of head-related transfer functions (HRTFs)
- Compensation of acoustic and electrical echo signals
- Digital signal processing in medical diagnostics
- Application-driven real-time implementation
Examples:
- Connected Visual Reality - High quality visual communication in heterogeneous networks (CoVR)
- Acoustic Tube Endoscopy 660 KB - a poster
- Spatial Rendering (95 MB) with quasi-continuous HRTFs (head-related transfer functions)
Tools:
- Matlab, C/C++, RT Proc
Teaching
- Since 2009 teaching assignment in: "Information Theory and Source Coding"
- Winter term 2014/2015 teaching assignment in: "Digital Speech Processing 1" and assistance for the exercise and exam
Topics of Projects and Theses
- Signal processing for medical diagnostics
- Identification of time variant systems
- Measurement systems
Publications
Publications from Apr/ 2006 to Sep/ 1993
Antweiler, C., Vary, P. and Di Martino, E.: Akustische Tubenendoskopie mit Methoden der digitalen Sprachverarbeitung, in ITG-Fachtagung Sprachkommunikation(Kiel, Germany), Apr. 2006
Di Martino, E., Antweiler, C., Vary, P. and Westhofen, M.: Evaluation of Eustachian Tube opening by a new acoustic signal, in Proceedings of XVIII IFOS World Congress(Rome, Italy), Jun. 2005
Handke, C., Walther, L. E., Antweiler, C. and Westhofen, M.: Development of a new method for quantitative analysis of otolith function tests, in 76. Jahresversammlung der HNO-Heilkunde und Kopf- und Hals-Chirurgie (HNO Informationen)(Erfurt, Germany), May. 2005
Scheffczyk, S., Di Martino, E., Antweiler, C., Martinewski, E. and Westhofen, M.: Establishment of standard values in sonotubometry, in 76. Jahresversammlung der HNO-Heilkunde und Kopf- und Hals-Chirurgie (HNO Informationen)(Erfurt, Germany), May. 2005
Antweiler, C., Di Martino, E. and Telle, A.: Akustische Messverfahren zur Funktionsprüfung der Tuba Eustachii mittels Perfekter Sequenzen, in 38. DGBMT Jahrestagung(Ilmenau, Germany), pp. 898-899, Springer, Sep. 2004
Di Martino, E., Antweiler, C., Kellner, A. and Westhofen, M.: Einsatz neuer akustischer Signale zur Tubenfunktionsuntersuchung, in 75. Jahresversammlung der HNO-Heilkunde und Kopf- und Hals-Chirurgie (HNO Informationen)(Bad Reichenhall, Germany), p. 104, May. 2004
Di Martino, E., Antweiler, C., Telle, A., Thaden, R. and Westhofen, M.: Nutzung perfekter Sequenzen zur Funktionsuntersuchung der Eustachischen Röhre, in 7. Jahrestagung der Deutschen Gesellschaft für Audiologie (DGA)(Leipzig, Germany), p. 95, Mar. 2004
Antweiler, C.: Adaptation of Acoustic Echo Cancellers Exploiting Spectral Characteristics of Room Impulse Responses, in Proceedings of International Workshop on Acoustic Echo and Noise Control (IWAENC)(London, Great Britain), pp. 57-60, Sep. 1997
Antweiler, C., Grunwald, J. and Quack, H.: Approximation of Optimal Step Size Control for Acoustic Echo Cancellation, in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)(Munich, Germany), pp. 295-298, Apr. 1997
Antweiler, C.: Kompensation von akustischen Echosignalen unter Verwendung von spektralen Gewichtungsfiltern, in Proceedings of Aachen Symposium on Signal Theory(Aachen, Germany), pp. 247-250, Elsevier, Mar. 1997
Antweiler, C., Schiffer, A. and Dörbecker, M.: Acoustic Echo Control with Variable Individual Step Size, in Proceedings of International Workshop on Acoustic Echo and Noise Control (IWAENC)(Røros, Norway), pp. 15-18, Jun. 1995
Antweiler, C. and Antweiler, M.: System Identification with Perfect Sequences Based on the NLMS Algorithm, in (AEÜ), Vol. 3, No. 3, pp. 129-134, May. 1995, ISSN: 0001-1096
Antweiler, C. and Symanzik, G.: Simulation of Time Variant Room Impulse Responses, in Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)(Detroit, USA), pp. 3031-3034, May. 1995
Antweiler, C.: Orthogonalisierende Algorithmen für die digitale Kompensation akustischer Echos, Ph. D. Dissertation IND, RWTH Aachen, Aachener Beiträge zu Digitalen Nachrichtensystemen (ABDN), 1, 1995
Antweiler, C. and Schmitz, A.: Acoustic Echo Control Combined with Two Orthogonalizing Techniques, in Proceedings of European Signal Processing Conference (EUSIPCO)(Edinburgh, Scotland, Great Britain), pp. 1748-1751, Sep. 1994
Antweiler, C. and Dörbecker, M.: Perfect Sequence Excitation of the NLMS Algorithm and its Application to Acoustic Echo Control, in (Annales), Vol. 49, No. 7-8, pp. 386-397, Jul. 1994, ISSN: 0003-4347
Antweiler, C.: Orthogonalisierende Verfahren zur Verbesserung von digitalen Freisprecheinrichtungen, in Proceedings of Aachen Symposium on Signal Theory(Aachen, Germany), Mar. 1994
Paulus, J., Gerlach, C. G. and Antweiler, C.: High Quality Coding of Wideband Speech at 24 kbit/s, in Proceedings of IEEE Workshop on Speech Coding for Telecommunications(St. Jovite, Quebec, Canada), pp. 13-14, Oct. 1993
Wuppermann, F., Antweiler, C. and Kappelan, M.: Objective Analysis of the GSM Half Rate Speech Codecs, in Proceedings of European Conference on Speech Communication and Technology (EUROSPEECH)(Berlin, Germany), pp. 249-252, Sep. 1993
Antweiler, C., Dörbecker, M. and Antweiler, M.: Acoustic Echo Cancellation Using Mismatched Filter Techniques, in Proceedings of International Workshop on Acoustic Echo and Noise Control (IWAENC)(Plestin les Geves, France), pp. 87-93, Sep. 1993