Dr.-Ing. Christian Hümmer

2020

• Hofmann C.:
  Efficient System Identification using Parallel Connections and Cascades (Dissertation, 2020)
  BibTeX: Download

2018

• Bürger M., Hofmann C., Kellermann W.:
  Broadband multizone sound rendering by jointly optimizing the sound pressure and particle velocity
  In: The Journal of the Acoustical Society of America 143 (2018), S. 1477-1490
  ISSN: 1520-8524
  DOI: 10.1121/1.5026508
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• Hümmer C., Hofmann C., Maas R., Kellermann W.:
  Estimating parameters of nonlinear systems using the elitist particle filter based on evolutionary strategies
  In: IEEE/ACM Transactions on Audio, Speech and Language Processing 26 (2018), S. 595-608
  ISSN: 2329-9290
  DOI: 10.1109/taslp.2017.2788183
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• Zhang W., Hofmann C., Bürger M., Abhayapala TD., Kellermann W.:
  Spatial noise-field control with online secondary path modeling: A wave-domain approach
  In: IEEE/ACM Transactions on Audio, Speech and Language Processing 26 (2018), S. 2355-2370
  ISSN: 2329-9290
  DOI: 10.1109/taslp.2018.2864577
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2017

• Bürger M., Abhayapala TD., Hofmann C., Chen H., Kellermann W.:
  The spatial coherence of noise fields evoked by continuous source distributions
  In: The Journal of the Acoustical Society of America 142 (2017), S. 3025-3034
  ISSN: 1520-8524
  DOI: 10.1121/1.5009451
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• Bürger M., Hofmann C., Frankenbach C., Kellermann W.:
  Multizone sound reproduction in reverberant environments using an iterative least-squares filter design method with a spatiotemporal weighting function
  IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA) (New Paltz, NY, 15. Oktober 2017 - 18. Oktober 2017)
  DOI: 10.1109/WASPAA.2017.8170005
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• Bürger M., Meier S., Hofmann C., Fischer E., Puder H., Kellermann W.:
  Retrieval of individualized head-related transfer functions for hearing aid applications
  25th European Signal Processing Conference (EUSIPCO) (Kos, 28. August 2017 - 2. September 2017)
  DOI: 10.23919/EUSIPCO.2017.8081158
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• Zhang W., Hofmann C., Bürger M., Kellermann W.:
  Online secondary path modeling in wave-domain active noise control
  IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) (New Orleans, LA, 5. März 2017 - 9. März 2017)
  DOI: 10.1109/ICASSP.2017.7952129
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2016

• El-Rayyes A., Löllmann H., Hofmann C., Kellermann W.:
  Acoustic Echo Control for Humanoid Robots
  42. Deutsche Jahrestagung für Akustik (DAGA) (Aachen, 14. März 2016 - 17. März 2016)
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• Hofmann C., Günther M., Bürger M., Kellermann W.:
  Higher-order listening room compensation with additive compensation signals
  IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (Shanghai, 20. März 2016 - 25. März 2016)
  DOI: 10.1109/ICASSP.2016.7471732
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• Hofmann C., Günther M., Hümmer C., Kellermann W.:
  Efficient nonlinear acoustic echo cancellation by partitioned-block significance-aware Hammerstein group models
  European Signal Processing Conf. (EUSIPCO) (Budapest, 29. August 2016 - 2. September 2016)
  DOI: 10.1109/EUSIPCO.2016.7760555
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• Hofmann C., Hümmer C., Günther M., Kellermann W.:
  Significance-aware filtering for nonlinear acoustic echo cancellation
  In: EURASIP Journal on Advances in Signal Processing 2016 (2016), S. 113
  ISSN: 1687-6172
  DOI: 10.1186/s13634-016-0410-7
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• Hofmann C., Kellermann W.:
  Generalized wave-domain transforms for listening room equalization with azimuthally irregularly spaced loudspeaker arrays
  IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (Shanghai, 20. März 2016 - 25. März 2016)
  DOI: 10.1109/ICASSP.2016.7471744
  BibTeX: Download
• Hofmann C., Kellermann W.:
  Source-specific system identification
  IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (Shanghai, 20. März 2016 - 25. März 2016)
  DOI: 10.1109/ICASSP.2016.7471657
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• Huang H., Hofmann C., Kellermann W., Chen J., Benesty J.:
  A multiframe parametric Wiener filter for acoustic echo suppression
  International Workshop on Acoustic Signal Enhancement (IWAENC) (Xi'an, 13. September 2016 - 16. September 2016)
  In: Int. Workshop on Acoustic Echo and Noise Control (IWAENC), Xi'an, China: 2016
  DOI: 10.1109/IWAENC.2016.7602948
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• Huang H., Hofmann C., Kellermann W., Chen J., Benesty J.:
  Multiframe echo suppression based on orthogonal signal decompositions
  ITG Conference on Speech Communication (Paderborn, 5. Oktober 2016)
  In: ITG Conference on Speech Communication 2016
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• Zheng C., Hofmann C., Li X., Kellermann W.:
  Analysis of additional stable gain by frequency shifting for acoustic feedback suppression using statistical room acoustics
  In: IEEE Signal Processing Letters 23 (2016), S. 159-163
  ISSN: 1070-9908
  DOI: 10.1109/LSP.2015.2507205
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2015

• Bürger M., Hofmann C., Kellermann W.:
  The impact of loudspeaker array imperfections and reverberation on the performance of a multizone sound field synthesis system
  International Conference on Spatial Audio (ICSA) (Graz, 18. September 2015 - 20. September 2015)
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• Hofmann C., Kellermann W.:
  Wave-domain transforms for irregular loudspeaker array topologies
  Jahrestagung für Akustik (DAGA) (Nuremberg, 16. März 2015 - 19. März 2015)
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• Hümmer C., Maas R., Hofmann C., Kellermann W.:
  A Bayesian network approach to linear and nonlinear acoustic echo cancellation
  In: EURASIP Journal on Advances in Signal Processing 2015 (2015), S. 1-11
  ISSN: 1687-6172
  DOI: 10.1186/s13634-015-0282-2
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2014

• Hofmann C., Hümmer C., Kellermann W.:
  Significance-aware Hammerstein group models for nonlinear acoustic echo cancellation
  2014 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (Florence, 4. Mai 2014 - 9. Mai 2014)
  DOI: 10.1109/ICASSP.2014.6854742
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• Hümmer C., Hofmann C., Maas R., Kellermann W.:
  The significance-aware EPFES to estimate a memoryless preprocessor for nonlinear acoustic echo cancellation
  IEEE Global Conference on Signal and Information Processing (GlobalSIP) (Atlanta, GA, 3. Dezember 2014 - 5. Dezember 2014)
  DOI: 10.1109/GlobalSIP.2014.7032179
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• Hümmer C., Hofmann C., Maas R., Schwarz A., Kellermann W.:
  The elitist particle filter based on evolutionary strategies as novel approach for nonlinear acoustic echo cancellation
  2014 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (Florence, 4. Mai 2014 - 9. Mai 2014)
  DOI: 10.1109/ICASSP.2014.6853810
  BibTeX: Download
• Maas R., Hümmer C., Hofmann C., Kellermann W.:
  On Bayesian networks in speech signal processing
  11. ITG Symposium on Speech Communication (Erlangen, 24. September 2014 - 26. September 2014)
  URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84939547913∨igin=inward
  BibTeX: Download
• Maas R., Hümmer C., Schwarz A., Hofmann C., Kellermann W.:
  A Bayesian network view on linear and nonlinear acoustic echo cancellation
  2nd IEEE China Summit and International Conference on Signal and Information Processing, IEEE ChinaSIP 2014 (Xi'an, 9. Juli 2014 - 13. Juli 2014)
  DOI: 10.1109/ChinaSIP.2014.6889292
  BibTeX: Download
• Markovic D., Kowalczyk K., Antonacci F., Hofmann C., Sarti A., Kellermann W.:
  Estimation of acoustic reflection coefficients through pseudospectrum matching
  In: IEEE/ACM Transactions on Audio, Speech and Language Processing 22 (2014), S. 125-137
  ISSN: 2329-9290
  DOI: 10.1109/TASLP.2013.2285483
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• Schwarz A., Hofmann C., Kellermann W.:
  Combined nonlinear echo cancellation and residual echo suppression
  11. ITG Symposium on Speech Communication (Erlangen, 24. September 2014 - 26. September 2014)
  URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84939534751∨igin=inward
  BibTeX: Download
• Sehr A., Barfuß H., Hofmann C., Maas R., Kellermann W.:
  Efficient training of acoustic models for reverberation-robust medium-vocabulary automatic speech recognition
  Joint Workshop on Hands-Free Speech Communication and Microphone Arrays (HSCMA) (Nancy, 12. Mai 2014 - 14. Mai 2014)
  DOI: 10.1109/HSCMA.2014.6843275
  BibTeX: Download

2013

• Hofmann C., Sehr A., Sahoo SK., Maas R., Kellermann W.:
  New results on automatic speech recognition in extremely reverberant environments
  AIA-DAGA Conference on Acoustics (Merano, 18. März 2013 - 21. März 2013)
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• Schwarz A., Hofmann C., Kellermann W.:
  Spectral feature-based nonlinear residual echo suppression
  IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA) (New Paltz, NY, 20. Oktober 2013 - 23. Oktober 2013)
  DOI: 10.1109/WASPAA.2013.6701825
  BibTeX: Download

2012

• Hofmann C., Wolff T., Buck M., Haulick T., Kellermann W.:
  A morphological approach to single-channel wind-noise suppression
  International Workshop on Acoustic Signal Enhancement (IWAENC) (Aachen, 4. September 2012 - 6. September 2012)
  URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84957677844∨igin=inward
  BibTeX: Download
• Marković D., Hofmann C., Antonacci F., Kowalczyk K., Sarti A., Kellermann W.:
  Reflection coefficient estimation by pseudospectrum matching
  International Workshop on Acoustic Signal Enhancement (IWAENC) (Aachen, 4. September 2012 - 6. September 2012)
  URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84899459641∨igin=inward
  BibTeX: Download

2011

• Sehr A., Hofmann C., Maas R., Kellermann W.:
  Multi-style training of HMMS with stereo data for reverberation-robust speech recognition
  2011 Joint Workshop on Hands-free Speech Communication and Microphone Arrays, HSCMA'11 (Edinburgh, 30. Mai 2011 - 1. Juni 2011)
  DOI: 10.1109/HSCMA.2011.5942396
  BibTeX: Download

2010

• Sehr A., Hofmann C., Maas R., Kellermann W.:
  A novel approach for matched reverberant training of HMMs using data pairs
  11th Annual Conference of the International Speech Communication Association: Spoken Language Processing for All, INTERSPEECH 2010 (Makuhari, Chiba, 26. September 2010 - 30. September 2010)
  URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79959848054∨igin=inward
  BibTeX: Download