Prof. Dr.-Ing. Dorothea Kolossa

Ruhr-Universität Bochum
Digitale Signalverarbeitung
Fakultät für Elektrotechnik und Informationstechnik
Universitätsstr. 150
D-44780 Bochum
Raum: ID/2/325


Email: Dorothea.Kolossa@rub.de
Tel: +49 (0)234 32-28965
Fax: +49 (0)234 32-14165

Journal Articles

H. Meutzner, S. Gupta, V.-H. Nguyen, T. Holz, D. Kolossa: "Towards
Improved Audio CAPTCHAs Based on Auditory Perception and Language
Understanding," ACM Transactions on Information and System Security,
vol. 19, no. 4, February 2017.

A. Hussen Abdelaziz, D. Kolossa: “General Hybrid Framework for Uncertainty-decoding-based Automatic Speech Recognition Systems,” accepted for publication, Speech Communication, 2016.

R. Jacobi, G. vom Bögel, A, Grabmaier, D. Kolossa: “Analysis of Time Variant Reliability Information Used in a Multilevel Decoding Scheme for RFID and Sensor Signals”, accepted for publication in International Journal for RF Technologies: Research and Applications 2016.


R. Saeidi, R. Astudillo, D. Kolossa: “Uncertain LDA: Including observation uncertainties in discriminative transforms,” IEEE Trans. on Pattern Analysis and Machine Intelligence, Sept. 2015.

Hussen Abdelaziz, S. Zeiler and D. Kolossa: “Learning Dynamic Stream Weights For Coupled-HMM-based Audio-visual Speech Recognition”, IEEE Trans. Audio Speech and Language Processing, vol. 23, no. 5, pp. 863-876, May 2015.

D. Schmid, G. Enzner, S. Malik, D. Kolossa, R. Martin: “Variational Bayesian Inference for Multichannel Dereverberation and Noise Reduction,” IEEE Trans. on Audio, Speech and Language Processing, vol. 22, no. 8, pp. 1320-1335, Aug. 2014.

D. Kolossa, S. Zeiler, R. Saeidi, R.F. Astudillo: “Noise-Adaptive LDA: A New Approach for Speech Recognition Under Observation Uncertainty, IEEE Signal Processing Letters, vol. 20, no. 11, pp. 1018-1021, 2013.

R. Nickel, R. Fernandez Astudillo, D. Kolossa, R. Martin: “Corpus-Based Speech Enhancement with Uncertainty Modeling and Cepstral Smoothing”, IEEE Trans. on Audio, Speech and Language Processing, vol. 21, no. 5, May 2013.

R. Fernandez Astudillo, D. Kolossa, A. Abad, S. Zeiler, R. Saeidi, P. Mowlaee, J. P. da Silva Neto, R. Martin: “Integration of Beamforming and Uncertainty-of-Observation Techniques for Robust ASR in Multi-Source Environments”, Computer Speech and Language, Special Issue on Multisource Environments, vol. 27, no. 3, pp. 837-850, May 2013.

E. Hoffmann, D. Kolossa, B.-U. Köhler, R. Orglmeister: “Using Information Theoretic Distance Measures for Solving the Permutation Problem of Blind Source Separation of Speech Signals” , EURASIP Journal on Audio, Speech, and Music Processing, vol. 2012:14, April 2012.

R. Fernandez Astudillo, D. Kolossa, Philipp Mandelartz and  R. Orglmeister: "An Uncertainty Propagation Approach to Robust ASR using the ETSI Advanced Front-End", IEEE Journal of Selected Topics in Signal Processing, Special issue on Natural Interaction with Intelligent Environments, vol. 4, pp. 824 – 833, October 2010.

F. Kohl, G. Wübbeler, D. Kolossa, M. Bär, R. Orglmeister and C. Elster: “Shifted factor analysis for the separation of evoked dependent MEG signals”, Phys. Med. Biol., vol. 55, pp. 4219–4230, 2010.

D. Kolossa, R. Fernandez Astudillo, E. Hoffmann and R. Orglmeister: „ Independent Component Analysis and Time-Frequency Masking for Speech Recognition in Multitalker Conditions“, EURASIP Journal on Audio, Speech, and Music Processing. vol. 2010, Article ID 651420, 13 pages, 2010.

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Foto Kolossa