prof. Ing. Zbyněk Koldovský, Ph.D.

prof. Ing. Zbyněk Koldovský, Ph.D.
Institute of Information Technology and Electronics (ITE): Academic staff

E-mail:: zbynek.koldovsky@tul.cz
Office:: A02015
Tel.:: +420 48535 6851
STAG:: STAG profile

Achieved education: 2002 Ing.
2006 Ph.D.
2011 Doc.
2020 Prof.

Publications

KOLDOVSKÝ, Z., ČMEJLA, J. , and O‘REGAN, S. Blind Capon Beamformer Based on Independent Component Extraction: Single-Parameter Algorithm IEEE Signal Processing Letters IEEE, 2025, vol. 32, issue -. P. 801 – 805. ISSN: 10709908.
MÁLEK, J., KOLDOVSKÝ, Z. , and ČMEJLA, J. Warping: Data-driven Mixture Preprocessing to Boost the Performance of Blind Speech Separation The 33rd European Signal Processing Conference (EUSIPCO 2025) Eurasip, IEEE, 2025 P. neuvedeny (5 stran).
FEJGIN, D. et al. Comparison of Frequency-Fusion Mechanisms For Binaural Direction-of-Arrival Estimation for Multiple Speakers IEEE International Conference on Audio, Speech, and Signal Processing Seoul: IEEE, 2024 P. 731 – 735. ISBN: 979-835034485-1, ISSN: 15206149.
KAUTSKÝ, V., KOLDOVSKÝ, Z. , and ADALI, T. Double Nonstationarity: Blind Extraction of Independent Nonstationary Vector/Component from Nonstationary Mixtures — Performance Analysis IEEE Transactions on Signal Processing IEEE, 2024, vol. 72, issue 1. P. 3228 – 3241. ISSN: 1053-587X.
KOLDOVSKÝ, Z., MÁLEK, J., ČMEJLA, J. , and O‘REGAN, S. Informed FastICA: Semi-Blind Minimum Variance Distortionless Beamformer The 18th International Workshop on Acoustic Signal Enhancement (IWAENC 2024) IEEE, Eurasip, 2024 P. 95 – 99. ISBN: 979-835036185-8, ISSN: 2639-4316.
všechny publikace
GANNOT, S. et al. Special Issue on Model-Based and Data-Driven Audio Signal Processing, 2024
ČMEJLA, J., KOLDOVSKÝ, Z., KAUTSKÝ, V. , and ADALI, T. Dynamic Independent Component Extraction with Blending Mixing Vector: Lower Bound on Mean Interference-to-Signal Ratio IEEE International Conference on Audio, Speech and Signal Processing Rhodes Island: IEEE, 2023 P. neuvedeny (5 stran). ISSN: 15206149.
KOLDOVSKÝ, Z., ČMEJLA, J., ADALI, T. , and O‘REGAN, S. Independent Vector Extraction Constrained on Manifold of Half-Length Filters European Signal Processing Conference, 2023 P. neuvedeny (5 stran). ISBN: 978-946459360-0, ISSN: 22195491.
JANSKÝ, J. et al. Auxiliary Function-Based Algorithm for Blind Extraction of a Moving Speaker EURASIP JOURNAL ON AUDIO SPEECH AND MUSIC PROCESSING Springer, 2022, vol. 2022, issue 1. P. neuvedeny (16 stran). ISSN: 1687-4722.
MÁLEK, J., ČMEJLA, J. , and KOLDOVSKÝ, Z. Blind Extraction of Target Speech Source: Three ways of Guidance Exploiting Supervised Speaker Embeddings International Workshop on Acoustic Signal Enhancement IEEE, 2022 P. neuvedeny (5 stran). ISBN: 978-166546867-1.
KOLDOVSKÝ, Z., KAUTSKÝ, V. , and TICHAVSKÝ, P. Double Nonstationarity: Blind Extraction of Independent Nonstationary Vector/Component from Nonstationary Mixtures - Algorithms IEEE Transactions on Signal Processing IEEE, 2022, vol. 70, issue 1. P. 5102 – 5116. ISSN: 1053-587X.
HAUBNER, T., KELLERMAN, W. , and KOLDOVSKÝ, Z. Joint Acoustic Echo Cancellation And Blind Source Extraction Based On Independent Vector Extraction International Workshop on Acoustic Signal Enhancement, IWAENC 2022 - Proceedings IEEE, 2022 P. neuvedeny (5 stran). ISBN: 978-166546867-1.
MÁLEK, J. et al. Target Speech Extraction: Independent Vector Extraction Guided by Supervised Speaker Identification IEEE-ACM TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING IEEE, 2022, vol. 30, issue 30. P. 2295 – 2309. ISSN: 2329-9290.
ČMEJLA, J. et al. Advanced semi-blind speaker extraction and tracking implemented in experimental device with revolving dense microphone array Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH 1. ed. Czech Republic: International Speech Communication Association, 2021 P. 2152 – 2153. ISBN: 978-171383690-2, ISSN: 2308-457X.
KOLDOVSKÝ, Z., KAUTSKÝ, V., KOUNOVSKÝ, T. , and ČMEJLA, J. Algorithm for Independent Vector Extraction Based on Semi-Time-Variant Mixing Model European Signal Processing Conference 1. ed. Dublin, Ireland: Eurasip, 2021 P. 865 – 869. ISBN: 978-908279706-0, ISSN: 2219-5491.
MÁLEK, J. et al. Blind extraction of moving audio source in a challenging environment supported by speaker identification via X-vectors ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 1. ed. USA: IEEE, 2021 P. 226 – 230. ISSN: 1520-6149.
AMOR, N. et al. Blind Extraction of Moving Sources via Independent Component and Vector Analysis: Examples ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 1. ed. USA: IEEE, 2021 P. 3725 – 3729. ISSN: 1520-6149.
KOLDOVSKÝ, Z. , and GANNOT, S. Dictionary-Based Sparse Reconstruction of Incomplete Relative Transfer Functions European Signal Processing Conference (EUSIPCO 2021) 1. ed. Ireland: Eurasip, 2021 P. 1005 – 1009. ISBN: 978-908279706-0, ISSN: 2219-5491.
KOLDOVSKÝ, Z. et al. Dynamic Independent Component/Vector Analysis: Time-Variant Linear Mixtures Separable by Time-Invariant Beamformers IEEE Transactions on Signal Processing 1. ed. USA: IEEE, 2021, vol. 69, issue MAY. P. 2158 – 2173. ISSN: 1053-587X.
ČMEJLA, J. et al. MIRaGe: Multichannel Database of Room Impulse Responses Measured on High-Resolution Cube-Shaped Grid European Signal Processing Conference (EUSIPCO 2020) 1. ed. Netherlands: , 2021 P. 56 – 60. ISBN: 9789082797053, ISSN: 2219-5491.
SOFER, A. et al. Robust Relative Transfer Function Identification on Manifolds for Speech Enhancement European Signal Processing Conference (EUSIPCO 2020) 1. ed. Ireland: Eurasip, 2021 P. 401 – 405. ISBN: 978-908279706-0, ISSN: 2219-5491.
JANSKÝ, J. et al. Adaptive blind audio source extraction supervised by dominant speaker identification using x-vectors ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 1. ed. Barcelona: IEEE, 2020 P. 676 – 680. ISBN: 978-1-5090-6631-5, ISSN: 1520-6149.
MÁLEK, J., KOLDOVSKÝ, Z. , and BOHÁČ, M. Block-online Multi-channel Speech Enhancement Using Deep Neural Network-supported Relative Transfer Function Estimates IET Signal Processing 1. ed. Stevenage: Institution of Engineering and Technology, 2020, vol. 14, issue 3. P. 124 – 133. ISSN: 1751-9675.
KAUTSKÝ, V., KOLDOVSKÝ, Z., TICHAVSKÝ, P. , and ZARZOSO, V. Cramér-Rao Bounds for Complex-Valued Independent Component Extraction: Determined and Piecewise Determined Mixing Models IEEE Transactions on Signal Processing 1. ed. IEEE, 2020, vol. 68, issue 2020. P. 5230 – 5243. ISSN: 1053-587X.
KAUTSKÝ, V., TICHAVSKÝ, P., KOLDOVSKÝ, Z. , and ADALI, T. Performance Bounds for Complex-Valued Independent Vector Analysis IEEE Transactions on Signal Processing 1. ed. IEEE, 2020, vol. 68, issue 2020. P. 4258 – 4267. ISSN: 1053-587X.
KOLDOVSKÝ, Z., MÁLEK, J. , and JANSKÝ, J. Extraction of Independent Vector Component from Underdetermined Mixtures through Block-Wise Determined Modeling ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 1. ed. Brighton, England: IEEE, 2019 P. 7903 – 7907. ISBN: 978-1-4799-8131-1, ISSN: 1520-6149.
KOLDOVSKÝ, Z. , and TICHAVSKÝ, P. Gradient Algorithms for Complex Non-Gaussian Independent Component/Vector Extraction, Question of Convergence IEEE Transactions on Signal Processing 1. ed. IEEE, 2019, vol. 67, issue 4. P. 1050 – 1064. ISSN: 1053-587X.
KAUTSKÝ, V., KOLDOVSKÝ, Z. , and TICHAVSKÝ, P. Performance Bound for Blind Extraction of Non-Gaussian Complex-Valued Vector Component from Gaussian Background ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 1. ed. Brighton, England: IEEE, 2019 P. 5287 – 5291. ISBN: 978-1-4799-8131-1, ISSN: 1520-6149.
JANSKÝ, J. , and KOLDOVSKÝ, Z. Blind Source Separation Using Incomplete De-Mixing Transform with a Precise Approach for Selecting Constrained Sets of Frequencies The 16th International Workshop on Acoustic Signal Enhancement (IWAENC 2018) 1. ed., 2018 P. 236 – 240. ISBN: 978-1-5386-8151-0.
SAWADA, H. , and KOLDOVSKÝ, Z. Independent component and vector analysis Audio Source Separation and Speech Enhancement 1. ed. Spojené státy americké: Wiley, 2018 P. 263 – 288. ISBN: 978-1-119-27989-1.
ČMEJLA, J., KOUNOVSKÝ, T., MÁLEK, J. , and KOLDOVSKÝ, Z. Independent Vector Analysis Exploiting Pre-Learned Banks of Relative Transfer Functions for Assumed Target’s Positions Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) - The 14th International Conference on Latent Variable Analysis and Signal Separation (LVA/ICA 2018) 1. ed., 2018 P. 270 – 279. ISBN: 9783319937632, ISSN: 0302-9743.
ČMEJLA, J. , and KOLDOVSKÝ, Z. Multi-Channel Speech Enhancement Based on Independent Vector Extraction The 16th International Workshop on Acoustic Signal Enhancement (IWAENC 2018) 1. ed., 2018 P. 525 – 529. ISBN: 978-1-5386-8151-0.
KOLDOVSKÝ, Z., TICHAVSKÝ, P. , and ONO, N. Orthogonally-Constrained Extraction of Independent Non-Gaussian Component from Non-Gaussian Background without ICA Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) - 14th International Conference on Latent Variable Analysis and Signal Separation, LVA/ICA 2018 1. ed. Velká Británie: , 2018 P. 161 – 170. ISBN: 9783319937632, ISSN: 0302-9743.
KOUNOVSKÝ, T., KOLDOVSKÝ, Z. , and ČMEJLA, J. Recursive and Partially Supervised Algorithms for Speech Enhancement on the Basis of Independent Vector Extraction The 16th International Workshop on Acoustic Signal Enhancement (IWAENC 2018) 1. ed., 2018 P. 401 – 405. ISBN: 978-1-5386-8151-0.
ŠEMBERA, O., TICHAVSKÝ, P. , and KOLDOVSKÝ, Z. Adaptive Blind Separation of Instantaneous Linear Mixtures of Independent Sources Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 1. ed. Grenoble, France: Springer Verlag, 2017 P. 172 – 181. ISBN: 9783319535463, ISSN: 0302-9743.
NESTA, F., MOSAYYEBPOUR, S., KOLDOVSKÝ, Z. , and PALEČEK, K. Audio/Video Supervised Independent Vector Analysis through multimodal pilot dependent components European Signal Processing Conference 2017 1. ed. Kos, Greece: , 2017 P. 1190 – 1194. ISBN: 978-0-9928626-7-1.
KAUCKÝ, V., KOLDOVSKÝ, Z. , and TICHAVSKÝ, P. Cramér-Rao-Induced Bound for Interference-to-Signal Ratio Achievable Through Non-Gaussian Independent Component Extraction 2017 IEEE 7TH INTERNATIONAL WORKSHOP ON COMPUTATIONAL ADVANCES IN MULTI-SENSOR ADAPTIVE PROCESSING (CAMSAP) 1. ed. Curaçao, Dutch Antilles: , 2017 P. 1 – 5. ISBN: 978-1-5386-1251-4.
RAJMIC, P., KOLDOVSKÝ, Z. , and DAŇKOVÁ, M. Fast Reconstruction of Sparse Relative Impulse Responses via Second-Order Cone Programming IEEE Workshop on Applications of Signal Processing to Audio and Acoustics 1. ed. New Paltz, NY, USA: Institute of Electrical and Electronics Engineers Inc., 2017 P. 364 – 368. ISBN: 978-1-5386-1632-1.
JANSKÝ, J., BOHÁČ, M., KOLDOVSKÝ, Z. , and MÜLLER, M. Linear acoustic echo cancellation using deep neural networks and convex reconstruction of incomplete transfer function Proceedings of the 2017 IEEE International Workshop of Electronics, Control, Measurement, Signals and their Application to Mechatronics, ECMSM 2017 1. ed. Donostia, San Sebastian, Spain: Institute of Electrical and Electronics Engineers Inc., 2017 P. 1 – 6. ISBN: 978-1-5090-5582-1.
KOLDOVSKÝ, Z., TICHAVSKÝ, P. , and KAUCKÝ, V. Orthogonally Constrained Independent Component Extraction: A Blind Minimum Power Distortionless Beamformer 25th European Signal Processing Conference, EUSIPCO 2017 1. ed. Kos, Greece: Institute of Electrical and Electronics Engineers Inc., 2017 P. 1155 – 1159. ISBN: 978-0-9928626-7-1.
KOLDOVSKÝ, Z. , and NESTA, F. Performance Analysis of Source Image Estimators in Blind Source Separation IEEE Transactions on Signal Processing 1. ed. Institute of Electrical and Electronics Engineers (IEEE), 2017, vol. 65, issue 16. P. 4166 – 4176. ISSN: 1053-587X.
NESTA, F. , and KOLDOVSKÝ, Z. Supervised Independent Vector Analysis Through Pilot Dependent Components IEEE International Conference on Audio, Speech, and Signal Processing 2017 1. ed. New Orleans, USA: , 2017 P. 536 – 540. ISBN: 978-1-5090-4117-6, ISSN: 1520-6149.
JANSKÝ, J., KOLDOVSKÝ, Z. , and ONO, N. A computationally cheaper method for blind speech separation based on auxiva and incomplete demixing transform 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016 Xi’an, China: Institute of Electrical and Electronics Engineers Inc., 2016 P. neuvedeny (5 stran). ISBN: 978-1-5090-2007-2.
STEIGER, K. et al. Adaptive acoustic metasurfaces for the active sound field control Proceedings of the 22nd International Congress on Acoustics 1. ed. Buenos Aires: Asociación de Acústicos Argentinos, 2016 P. 1 – 10. ISBN: 978-987-24713-6-1.
KOLDOVSKÝ, Z. , and NESTA, F. Approximate MVDR and MMSE beamformers exploiting scale-invariant reconstruction of signals on microphones 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016 Xi’an, China: Institute of Electrical and Electronics Engineers Inc., 2016 P. neuvedeny (5 stran). ISBN: 978-1-5090-2007-2.
ŠEMBERA, O., TICHAVSKÝ, P. , and KOLDOVSKÝ, Z. Blind separation of underdetermined linear mixtures based on source nonstationarity and AR(1) modeling ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings Shanghai, China: Institute of Electrical and Electronics Engineers Inc., 2016 P. 4323 – 4327. ISBN: 978-1-4799-9988-0, ISSN: 1520-6149.
KOLDOVSKÝ, Z., MÁLEK, J., BOHÁČ, M. , and JANSKÝ, J. CHiME4: Multichannel Enhancement Using Beamforming Driven by a DNN-based Voice Activity Detector The 4th International Workshop on Speech Processing in Everyday Environments, 2016 P. neuvedeny (5 stran). ISBN: 978-2-9557814-0-1.
KOLDOVSKÝ, Z., NESTA, F., TICHAVSKÝ, P. , and ONO, N. Frequency-domain blind speech separation using incomplete de-mixing transform European Signal Processing Conference Budapest, Hungary: European Signal Processing Conference, EUSIPCO, 2016 P. 1663 – 1667. ISBN: 978-0-9928626-5-7, ISSN: 2076-1465.
MÁLEK, J. , and KOLDOVSKÝ, Z. Hammerstein model-based nonlinear ECHO cancelation using a cascade of neural network and adaptive linear filter 2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016 Xi’an, China: Institute of Electrical and Electronics Engineers Inc., 2016 P. neuvedeny (5 stran). ISBN: 978-1-5090-2007-2.
KOLDOVSKÝ, Z., YEREDOR, A. , and VINCENT, E. 12th International Conference on Latent Variable Analysis and Signal Separation, LVA/ICA 2015 [konference].
KOLDOVSKÝ, Z., JANSKÝ, J. , and NESTA, F. A local model of relative transfer functions involving sparsity 12th International Conference on Latent Variable Analysis and Signal Separation, LVA/ICA 2015 1. ed. Liberec, Czech Republic: Springer Verlag, 2015 P. 219 – 226. ISBN: 978-3-319-22481-7, ISSN: 0302-9743.
MÁLEK, J. et al. Compensation of Nonlinear Distortions in Speech for Automatic Recognition 38th International Conference on Telecommunications and Signal Processing, TSP 2015 1. ed. Praha, Česká Republika: Institute of Electrical and Electronics Engineers Inc., 2015 P. 419 – 423. ISBN: 978-1-4799-8498-5.
KOLDOVSKÝ, Z., MÁLEK, J. , and TICHAVSKÝ, P. Improving relative transfer function estimates using second-order cone programming 12th International Conference on Latent Variable Analysis and Signal Separation, LVA/ICA 2015 1. ed. Liberec, Czech Republic: Springer Verlag, 2015 P. 227 – 234. ISBN: 978-3-319-22481-7.
MÁLEK, J. , and KOLDOVSKÝ, Z. Nonlinear echo cancellation using generalized power filters IEEE International Workshop of Electronics, Control, Measurement, Signals and their Application to Mechatronics, ECMSM 2015 1. ed. Liberec; Czech Republic: Institute of Electrical and Electronics Engineers Inc., 2015 P. neuvedeno. ISBN: 978-1-4799-6972-2.
KOLDOVSKÝ, Z., NESTA, F. , and THORMUNDSSON, T. On-line multichannel estimation of source spectral dominance 12th International Conference on Latent Variable Analysis and Signal Separation, LVA/ICA 2015 1. ed. Liberec, Czech Republic: Springer Verlag, 2015 P. 404 – 412. ISBN: 978-3-319-22481-7.
KOLDOVSKÝ, Z. , and TICHAVSKÝ, P. Sparse Reconstruction of Incomplete Relative Transfer Function: Discrete and Continuous Time Domain Signal Processing Conference (EUSIPCO), 2015 23rd European 1. ed. Nice, France: IEEE, 2015 P. 394 – 398. ISBN: 978-099286263-3.
KOLDOVSKÝ, Z., MÁLEK, J. , and GANNOT, S. Spatial source subtraction based on incomplete measurements of relative transfer function IEEE-ACM TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING 1. ed. Institute of Electrical and Electronics Engineers Inc., 2015, vol. Volume 23, issue Issue 8. P. 1335 – 1347. ISSN: 2329-9290.
KOLDOVSKÝ, Z. , and TICHAVSKÝ, P. Způsob potlačení šumu a zvýraznění řečového signálu pro mobilní telefon se dvěma nebo více mikrofony [patent] Granted at 20140122 as No. 304330

Topics of Student work

Automatické rozpoznávání akordů v kytarových doprovodech, ITE, 2025
Simulace přijímaného signálu z dronu v prostředí radioelektronického boje, ITE, 2025
Trénovaná Diskrétní Fourierova transformace , ITE, 2024
Hybridní neuronové sítě pro extrakci řečového signálu, ITE, 2024
Simulation of gravitational wave extraction from a disturbed observation, ITE, 2024
show complete list of topics
Porovnání metod slepé extrakce signálů pomocí metody Monte Carlo, ITE, 2023
Exploratory analysis of biomarkers based on functional magnetic resonance, ITE, 2023
Indirectly Supervised Blind Signal Extraction Using Side Information: Study and Simulation, ITE, 2023
Noise reduction in musical recordings using neural networks, ITE, 2023

Správa studentských prací a projektů

Show all staff Co-workers at ITE

prof. Ing. Zbyněk Koldovský, Ph.D.

Set filter to set related news and events to your interest