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TU Berlin

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Karim Helwani

Lupe

Research Field:

Multichannel adaptive signal processing

Research Topics:

• Multichannel acoustic echo cancellation
• Wave-Domain Adaptive Filtering

Biography

Karim Helwani studied Computer and Communication Technology at the University of Saarland and carried out his diploma’s degree (Diplom Ingenieur) in 2007 on (Inverse Scattering Algorithms for Coupled High Frequency Transmission Lines), from summer 2007 to 2008 he was research associate at the Audio Communication Group of the TU Berlin and worked  additionally as embedded systems engineer at PikeTec GmbH in Berlin.In Summer 2008 he was employed at the institute of Microelectronic Systems at Leibniz University Hannover, where he held classes in System Architecture for Adaptive Music Classification. He joined Deutsche Telekom Laboratories in November 2008.

Address

Quality and Usability Lab
Deutsche Telekom Laboratories
TU Berlin
Ernst-Reuter-Platz 7
D-10587 Berlin, Germany

Tel:  +49 30 8353 58224

Publications

Helwani, K. and Buchner, H. (2013). ON THE EIGENSPACE ESTIMATION FOR SUPERVISED MULTICHANNEL SYSTEM IDENTIFICATION. to appear in the Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Vancouver, Canada.


Helwani, K., Buchner, H., Benesty, J. and Chen, J. (2013). Multichannel Acoustic Echo Suppression. Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Vancouver, Canada.. IEEE, 600–604.


Huang, H., Benesty, J., Chen, J., Helwani, K. and Buchner, H. (2013). A STUDY OF THE MVDR FILTER FOR ACOUSTIC ECHO SUPPRESSION. to appear in the Proc. IEEE Intl. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Vancouver, Canada


Helwani, K., Buchner, H., Benesty, J. and Chen, J. (2013). A Single-Channel MVDR Filter for Acoustic Echo Suppression. Signal Processing Letters, IEEE. IEEE, 351–354.

Link zur Originalpublikation

Helwani, K., Spors, S. and Buchner, H. (2012). How to Design a Delay-and-Sum Beamformer for Rigid Rotationally Symmetric Arrays?. 46th Annual Asilomar Conference on Signals, Systems, and Computers. IEEE, 1–4.


Helwani, K., Buchner, H. and Spors, S. (2012). Multichannel Adaptive Filtering with Sparseness Constraints. International Workshop on Acoustic Signal Enhancement (IWAENC). IEEE.

Link zur Originalpublikation

Helwani, K., Rettberg, T., Buchner, H. and Spors, S. (2012). Towards a Modular System for Real-Time Multiple-Input/Mltiple-Output Audio Processing. German Annual Conference on Acoustics (DAGA)


Rettberg, T., Helwani, K., Spors, S. and Buchner, H. (2012). Practical Aspects of the Calibration of Spherical Microphone Arrays. German Annual Conference on Acoustics (DAGA). DEGA.


Ciba, S., Helwani, K., Wierstorf, H., Obermayer, K., Raake, A. and Spors, S. (2012). Employing a Binaural Auditory Model to Classify Everyday Sound Events. German Annual Conference on Acoustics (DAGA)


Helwani, K., Spors, S. and Buchner, H. (2011). Spatio-temporal signal preprocessing for multichannel acoustic echo cancellation. Proc. IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP)


Helwani, K., Buchner, H. and Spors, S. (2011). Calibration of Microphone Arrays with Arbitrary Geometries. German Annual Conference on Acoustics (DAGA). DEGA.


Spors, S., Helwani, K. and Ahrens, J. (2011). Local sound field synthesis by virtual acoustic scattering and time-reversal. 131th Convention of the Audio Engineering Society, 1–14.

Link zur Publikation Link zur Originalpublikation

Buchner, H. and Helwani, K. (2010). On the Relation Between Blind System Identification and Subspace Tracking and Associated Generalizations. Proc. Asilomar Conference on Signals, Systems, and Computers. IEEE.


Helwani, K., Buchner, H. and Spors, S. (2010). On the Robust and Efficient Computation of the Kalman Gain for Multichannel Adaptive Filtering with Application to Acoustic Echo Cancellation. Proc. Asilomar Conference on Signals, Systems, and Computers. IEEE.


Helwani, K., Buchner, H. and Spors, S. (2010). Source-domain adaptive filtering for MIMO systems with application to acoustic echo cancellation. Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2010). IEEE, 321–324.


Spors, S., Buchner, H. and Helwani, K. (2009). Block-based Multichannel Transform-Domain Adaptive Filtering. European Signal Processing Conference (EUSIPCO)


Helwani, K., Lindau, A. and Weinzierl, S. (2008). Efficiency of two-dimensional interpolation algorithms for high-quality dynamic binaural synthesis. J. Acoustical Society of America, Volume 123, Issue 5


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