Waldo Nogueira, jun. Prof. Dr.-Ing
- Since 2020 W2-Professor and head of APG
- Since 2013 W1-Junior Professor and head of APG
- 2011-2013 Post-Doc Music Technology Group, University Pompeu Fabra, Barcelona, Spain
- 2009-2011 Principal Research Engineer – Signal Processing, Advanced Bionics, Hannover, Germany
- 2008-2009 Research Engineer – Signal Processing, Advanced Bionics, Antwerp, Belgium
- 2003-2008 Ph. D. (Dr.-Ing) Leibniz University Hannover, Hannover
(Ph. D. Thesis: Design and Evaluation of Signal Processing Strategies for Cochlear Implants
based on Psychoacoustic Masking and Current Steering) - 1997-2003 (Dipl.-Ing) Universitat Politecnica de Catalunya, Barcelona, Spain
(Master Thesis: Envelope estimation for audio signals based on predictive techniques in the frequency domain)
- Audio and speech signal processing, neural processing, computational models of electric acoustic hearing,
electrophysiology in humans, binaural hearing - Teaching
- Audio 3D, Audio and Speech Signal Processing
- Development of CI sound coding strategies for combined electric and acoustic stimulation
- Psychoacoustics and electrophysiology
- W. Nogueira, L. Litvak, D. M. Landsberger, A. Büchner (2017), Loudness and Pitch Perception using Dynamically Compensated Virtual Channels, Hearing Research, Volume 344, February 2017, 334:223-234.
- W. Nogueira, B. Krüger, A. Büchner, E. Lopez-Poveda, “Contralateral Suppression of Human Hearing Sensitivity in Single-sided Deaf Cochlear Implant Users”, Hearing Research, 2018
- W. Nogueira, T. Rode, A. Büchner (2016), Spectral Contrast Enhancement Improves Speech Intelligibility in Noise for Cochlear Implant, Journal of the Acoustical Society of America.
- W. Nogueira, L.M. Litvak, A. A. Saoji, A. Büchner, Design and Evaluation of a Cochlear Implant Strategy Based on a “Phantom” Channel, PLoS ONE 10(3): e0120148. doi:10.1371/journal. pone.0120148, 2015.
- W. Nogueira, D. Schurzig, R. Penninger, A. Büchner, Validation of a Cochlear Implant Patient Specific Model of the Voltage Distribution in a Clinical Setting, Front. Bioeng. Biotechnol. | doi: 10.3389/fbioe.2016.00084, 2016.
- W. Nogueira, L. Litvak, B. Edler, J. Ostermann, A. Buechner, Signal Processing Strategies based on Current Steering for Cochlear Implants, EURASIP Journal on Applied Signal Processing, Special Issue on Hearing Instrumentation, 2009.
- W. Nogueira, A. Buechner, Th. Lenarz, B. Edler, A Psychoacoustic "NofM"-type Speech Coding Strategy for Cochlear Implants, Journal on Applied Signal Processing, Special Issue on DSP in Hearing Aids and Cochlear Implants, Vol. 127, Nr. 18, pp. 3044-3059, November 2005
Benjamin Krüger, Dr.- Ing candidate
- Since January 2015 Ph. D. student in the APG
- Master of Science at the Gottfried Wilhelm Leibniz University Hannover
(Thesis: Conception and implementing of a RICT-based, mobile hardware platform for real-time capable movement sonification, Institute of Microelectronic Systems (IMS), Hannover) - Bachelor of Engineering at the University of Applied Sciences and Arts, Hannover
(Thesis: Integration of a reverberation algorithm into SAOC-Binaural, Fraunhofer Institute for Integrated Circuits IIS)
- Digital signal processing, audio and speech signal processing
- Development of CI sound coding strategies for combined electric and acoustic stimulation
- Psychoacoustics and electrophysiology
- B. Krüger, A. Büchner, W. Nogueira, “Simultaneous masking between electric and acoustic stimulation in cochlear implant users with residual low-frequency hearing”, Hearing Research, 2017.
- M. Imsiecke, B Krüger, A. Büchner, T. Lenarz, W. Nogueira, „Electric-Acoustic Forward Masking in Cochlear Implant Users with Ipsilateral Residual Hearing”, Hearing Research, 2018
- W. Nogueira, B. Krüger, A. Büchner, E. Lopez-Poveda, “Contralateral Suppression of Human Hearing Sensitivity in Single-sided Deaf Cochlear Implant Users”, Hearing Research, 2018
- Brückner, H.-P.; Krüger, B.; Blume, H., “ Reliable orientation estimation for mobile motion capturing in medical rehabilitation sessions based on inertial measurement units”, Microelectronics Journal, Vol. 45, Issue 12, pp. 1603-1611, 2014
Florian Langner, Dr. rer. nat candidate
- Since August 2015 a Ph.D. student in the APG
- Master of Science at the University of Oldenburg in the Medical Physics Department
(Thesis: Frequency selectivity improvement with a biologically inspired preprocessing algorithm) - Bachelor of Engineering at the Institute of Hearing Technology and Audiology Oldenburg
(Thesis: Binaural summation effects of speech in SSD and binaurally implanted CI listeners)
- Different forms of electrical stimulation (current steering and focusing, parallel stimulation)
- Modelling the loudness perception of CI listeners
- Investigating ways to improve power consumption while maintaining a trade-off with performance
- Inventing my own sound coding strategy
- Langner, F., Saoji, A.A., Büchner, A. & Nogueira, W., 2017. Adding simultaneous stimulating channels to reduce power consumption in cochlear implants. Hear. Res. 345, 96–107. doi:10.1016/j.heares.2017.01.010
- Langner, F. & Jürgens, T., 2016. Forward-Masked Frequency Selectivity Improvements in Simulated and Actual Cochlear Implant Users Using a Preprocessing Algorithm. Trends Hear. 20, 1–14. doi:10.1177/2331216516659632
- Langner, F. & Jürgens, T., 2016. Frequency selectivity improvements in individual cochlear implant users with a biologically-inspired preprocessing
algorithm. Proceedings of ISAAR 2015: Individual Hearing Loss – Characterization, Modelling, Compensation Strategies. 5th symposium on Auditory and Audiological Research. August 2015, Nyborg, Denmark.
Marina Imsiecke, Dr. rer. nat candidate
- Research Associate at APG since July 2016
- Master of Science Physics at the University of Oldenburg in the Medical Physics Department
(Thesis: Relation of Speech-Specific Representations of Audio Signals and Electro-Cortical Activity in the Human Brain) - Bachelor of Science Physics at the University of Oldenburg in the Medical Physics Department
(Thesis: Evaluation of the activation of the auditory cortex for comprehensible and incomprehensible speech signals with functional MR-Imaging)
- Cochlear implants and residual hearing in the implanted ear
- Electric-acoustic stimulation (EAS) and masking effects
- Speech perception and objective measures for EAS subjects
- Imsiecke, M., Krüger, B., Büchner, A., Lenarz, T., Nogueira, W., 2018. Electric-Acoustic Forward Masking in Cochlear Implant Users with Ipsilateral Residual Hearing. Hearing Research. doi: 10.1016/j.heares.2018.04.003
- Frye, M., Micheli, C., Schepers, I. M., Schalk, G., Rieger, J. W., & Meyer, B. T., 2016. Neural Responses to Speech-Specific Modulations Derived from a Spectro-Temporal Filter Bank. INTERSPEECH Conference Proceedings, San Francisco.
Tom Gajecki, Dr. rer.nat. candidate
- Since January 2018 a Ph.D. student at the APG
- Master of Science in Sound and Music Computing at the Universitat Pompeu Fabra, Barcelona.
(Thesis: Singing Vocal Enhancement for Cochlear Implant Users Based on Deep Learning Models) - Bachelor in Physics at the University of the Basque Country, Lejona.
- Bachelor in Electrical Engineering at the University of the Basque Country, Lejona,
- Audio signal processing
- Deep learning
- Music perception
- Binaural sound coding strategies
- T. Gajecki, W. Nogueira. A Synchronized Binaural N-of-M Sound Coding Strategy to Improve Speech Ineligibility in Noise of Bilateral Cochlear Implant Users. ITG Speech Communication, 2018.
- T. Gajecki, W. Nogueira. Deep Learning Model to Remix Music for Cochlear Implant Users. The Journal of the Acoustical Society of America, 2018.
- W. Nogueira, T. Gajecki, B. Krüger, J. Janer, A. Büchner. Development of a Sound Coding Strategy based on a Deep Recurrent Neural Network for Monaural Source Separation in Cochlear Implants. ITG Speech Communication. Padeborn, Germany, 2016.
Daniel Alrutz, Dr. rer. nat. candidate
- coming soon...
- Since August 2018 Ph.D. Student in the APG
- Master of Science Physics at the Leibiz University Hannover
(Thesis: Transport and scattering in semiclassical Holstein wires, Institute for Theoretical Physics) - Bachelor of Science Physics at the Leibniz University Hannover
(Thesis: Coherence of the hydrogen molecular ion after ionization in a strong laser field, Institute for Theoretical Physics)
- Interactions between electric and acoustic stimulation (EAS) in CI users
- Computational modelling
- coming soon...
Students
Sina Tahmasebi, HiWi
Hanna Dolhopiatenko, HiWi
Nina Aldag, HiWi, Master Thesis
Collaborators
Richard Penninger, Ph. D.
Thilo Rode, Ing.
External Collaborators
Gerard Roma, Ph. D.
Perfecto Herrera, Prof. @ Universitat Pompeu Fabra
David Landsberger, Prof. @ New York University School of Medicine
Enrique Lopez-Poveda, Prof. @ University of Salamanca
Deniz Baskent, Prof. @ University Hospital Groningen
Mentored Student's Awards
Tom Gajecki, ARO 2020
Florian Langner, CIAP 2017
Benjamin Krüger, ARO 2016
Former Members
Gunnar Geissler, M. Sc. (now at Advanced Bionics)
Silke Klawitter, M. Sc. (now at Oberlinhaus, Wolfsburg)
Former Students
Franklin Alvarez (Music Technology Group, Barcelona)
Marina Bujosa Riera, (University Pompeu Fabra, Barcelona)
Giulio Cosatti, M. Sc. (University Rome Tre)
Tomas Gajecki, M. Sc. (Universitat Pompeu Fabra, Barcelona)
Piotr Androlojc, B. Sc. (Poznan University of Technology)
Maria Egger, B. Sc. (FH Technikum Vienna)
Mayra Windeler, FWJ
Torben Fiedler, B. Sc. (Universität Bremerhaven)
Marta Lopez, B. Sc.
Marcel Farrés, B. Sc.
Frances Xavier Salleres, B. Sc.
Aina Lopez, B. Sc.
Xavier de la Fuente, B. Sc.
Jordi Pons Puig, M. Sc.
Xavier Salleras, B. Sc.
Ariadna Mas, B. Sc.
Guillem Canizares, UPF, B. Sc.
Nicolas Perez, UPF, B. Sc.
Sina Tahmasebi, HiWi
Hanna Dolhopiatenko, HiWi
Nina Aldag, HiWi, Master Thesis
Collaborators
Richard Penninger, Ph. D.
Thilo Rode, Ing.
External Collaborators
Gerard Roma, Ph. D.
Perfecto Herrera, Prof. @ Universitat Pompeu Fabra
David Landsberger, Prof. @ New York University School of Medicine
Enrique Lopez-Poveda, Prof. @ University of Salamanca
Deniz Baskent, Prof. @ University Hospital Groningen
Mentored Student's Awards
Tom Gajecki, ARO 2020
Florian Langner, CIAP 2017
Benjamin Krüger, ARO 2016
Former Members
Gunnar Geissler, M. Sc. (now at Advanced Bionics)
Silke Klawitter, M. Sc. (now at Oberlinhaus, Wolfsburg)
Former Students
Franklin Alvarez (Music Technology Group, Barcelona)
Marina Bujosa Riera, (University Pompeu Fabra, Barcelona)
Giulio Cosatti, M. Sc. (University Rome Tre)
Tomas Gajecki, M. Sc. (Universitat Pompeu Fabra, Barcelona)
Piotr Androlojc, B. Sc. (Poznan University of Technology)
Maria Egger, B. Sc. (FH Technikum Vienna)
Mayra Windeler, FWJ
Torben Fiedler, B. Sc. (Universität Bremerhaven)
Marta Lopez, B. Sc.
Marcel Farrés, B. Sc.
Frances Xavier Salleres, B. Sc.
Aina Lopez, B. Sc.
Xavier de la Fuente, B. Sc.
Jordi Pons Puig, M. Sc.
Xavier Salleras, B. Sc.
Ariadna Mas, B. Sc.
Guillem Canizares, UPF, B. Sc.
Nicolas Perez, UPF, B. Sc.