Waldo Nogueira

Jun. Prof. Dr.-Ing

• Since 2013 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) Student 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)
• 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)

Research and Interests

• 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

Selected Publications in Peer-reviewed Journals

• 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)

Research and Interests

• Digital signal processing, audio and speech signal processing
• Development of CI sound coding strategies for combined electric and acoustic stimulation
• Psychoacoustics and electrophysiology

Publications

• 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)

Research and Interests

• 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

Publications

• 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)

Research and Interests

• Cochlear implants and residual hearing in the implanted ear
• Electric-acoustic stimulation (EAS) and masking effects
• Speech perception and objective measures for EAS subjects

Publications

• 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

Research and Interests

• Audio signal processing
• Deep learning
• Music perception
• Binaural sound coding strategies

Publications

• 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

• 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)

Research and Interests

• Interactions between electric and acoustics stimulation (EAS) in CI users
• Computational modelling

Publications

• coming soon

List of Selected Publications

Journal Papers

2018

• W. Nogueira, B. Krüger, A. Büchner (2018), E. Lopez-Poveda, Contralateral Suppression of Human Hearing Sensitivity in Single-sided Deaf Cochlear Implant Users, Hearing Research (Accepted).
• T. Gajecki and W. Nogueira (2018), Deep Learning Models to Remix Music for Cochlear Implant Users, Journal of the Acoustical Society of America (Accepted).
• S. Klawitter, D. Landsberger, A. Büchner, W. Nogueira (2018), Perceptual Changes with Monopolar and Phantom electrode stimulation, Hearing Research, 359: 64-75.
• M. Imsiecke, B. Krüger, A. Büchner, T. Lenarz, W. Nogueira (2018), Electric-Acoustic Forward Masking in Cochlear Implant Users with Ipsilateral Residual Hearing, Hearing Research, (Accepted).
• J. P. Marcoleta, W. Nogueira, U. Floriep, T. Doll (2018), Flexible High Density Active Neural Implants combining a Distributed Multiplexing Transceiver Architecture with Biocompatible Technology, Physica Status Solidi A: Applications and Materials Science (In Press).
• T. Jürgens, Volker Hohmann, A. Büchner, W. Nogueira (2018), The effects of electrical field spatial spread and some cognitive factors on speech-in-noise performance of individual cochlear implant users – a computer model study, PlosOne (In Press).

2017

• G. Roma, P. Herrera, W. Nogueira (2017), Environmental sound recognition using short-time feature aggregation, Journal of Intelligent Information Systems, pp 1-19, doi:10.1007/s10844-017-0481-4.
• B. Krüger, A. Büchner, W. Nogueira (2017), Simultaneous Masking between Electric and Acoustic Stimulation in Cochlear Implant Users with Low Frequency Hearing, Hearing Research, https://doi.org/10.1016/j.heares.2017.06.014.
• F. Langner, A. Saoji, A. Büchner, W. Nogueira (2017), Adding Simultaneous Stimulation Channels to Reduce Power Comsumption in Cochlear Implants, Hearing Research, 345:96-107.
• 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, 2017.
• W. Nogueira, G. Ashida, Development of a parametric model of the electrically stimulated auditory nerve, Lecture Notes in Applied and Computational Mechanics,  Springer Verlag, 84: 349-362.

2016

• 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, 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.
• ​J. Pons, T. Rode, J, Janer, W. Nogueira, Remixing music using source separation algorithms to improve the musical experience of cochlear implant users, Journal of the Acoustical Society of America, 2016.
• C. Thiel, J. Özyurt, W. Nogueira, S. Puschmann, Effects of age on long term memory for degraded speech,  Front. Hum. Neurosci. 2016.

2015

• 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.

• R.T. Penninger, E. Kludt, A. Buechner, W. Nogueira,  Stimulating on multiple electrodes can improve temporal pitch perception, Int J Audiol 2015 Jan 29: 1-8, 2015.

• K.H. Dyballa, P. Hehrmann, V. Hamacher, W. Nogueira, T. Lenarz, A. Büchner, Evaluation of a transient noise reduction algorithm in cochlear implant users, Audiology Research 5 (2), 2015.

2011

• W. Nogueira, L. Hoepner, V. Hamacher, Th. Lenarz, A. Buechner, Use of hearing aid preprocessing techniques with cochlear implant users,International Journal of Pediatric Otorhinolaryngology, Volume 75, issue (May, 2011), p. 94. ISSN: 0165-5876 DOI: 10.1016/S0165-5876(11)70482-7 , Elsevier Science.

2010

• W. Nogueira, F. Vanpoucke, P. Dykmans, L. De Raeve, H. Van Hamme, J. Roelens, Speech Recognition Technology in CI Rehabilitation, Cochlear Implant International,  pp. 449-453(5) pp. 449-453(5) , Volume 11, Supplement 1, June 2010.

2009 

• 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.

2007 

• Buechner, W. Nogueira, B. Edler, R. D. Battmer, Th. Lenarz, Results from a Psychoacoustic Model-based Strategy for the N-24 and Freedom Cochlear Implants, Otology and Neurotology, 2007.

• Andreas Buechner, Martina Brendel, Beate Krüeger, Carolin Frohne-Büchner, Waldo Nogueira, Bernd Edler, Thomas Lenarz, Current Steering and Results From Novel Speech Coding Strategies, Otol Neurotol. 2008 Feb ;29 (2):203-207.

2005

• 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.

Patents
2014

• W. Nogueira, V. Hamacher, Method and system for electrical stimulation of a patient's cochlear, WO 2014086400 A1, June, 2014.
• S. Fredelake, W. Nogueira, System and method for neural hearing stimulation, W0 2014086400 A1, July, 2014.

2013

• W. Nogueira, A. Saoji, L. Litvak, Methods and Systems for Lowering a Pitch Sensation as Perceived by a Cochlear Implant Patient, WO Patent 2,013,082,185, 2013.

2006

• B. Edler, A. Buechner, F. Klefenz, W. Nogueira, Cochlear implant, device for generating a control signal for a cochlear implant, device for generating a combination signal and combination signal and corresponding methods, International Patent, Publication Number: WO/2007/033762, 2006-2007.

Book Chapters
2015

• W. Nogueira, W. Würfel, R. T. Penninger, A. Büchner, Development of a model of the electrically stimulated cochlea, in  Book: Biomedical Technology, Pages 145-161, Publisher: Springer International Publishing, 2015.

• W.  Nogueira,  T.  Rode,  A.  Büchner, Optimization  of  a  Spectral  Contrast   Enhancement  Algorithm  for  Cochlear   Implants  based  on  a  Vowel  Identification   Model, International Symposium of Hearing (ISH) Conference Proceedings (To appear as a book chapter by Springer), 2015 

Peer-Reviewed Conference Papers
2016

• W. Nogueira, T. Gajęcki, B. Krüger, J. Janer, A. Büchner (2016), Development of a Sound Coding Strategy based on a Deep Recurrent Neural Network for Monaural Source Separation in Cochlear Implants, ITG Speech Commungication, Pabeborn, Germany, 2016.
• W. Nogueira (2016), ​Sound Scene Classification based on Monaural and Binaural Features, IEEE DCASE 2016 Challenge: Acoustic Scene Classification.

2015

• W. Nogueira, M. Lopez, T. Rode, S. Doclo, A. Büchner, Individualizing a Monaural Beamformer for Cochlear Implant Users, IEEE ICASSP, Brisbane, Australia 2015.

2013

• G. Roma, W. Nogueira, P.Herrera, Recurrence Quantification Analysis Features for Environmental Sound Recognition, IEEE WASPAA, New Paltz, USA 2013.

2012

• W. Nogueira, A. Büchner, Conveying Low Frequency information through analoge stimulation in Cochlear Implants, EUSIPCO 2012, Bucarest, August 2012.

2007

• W. Nogueira, T. Harzcos, A. Buechner, J. Ostermann, B. Edler, Automatic Speech Recognition with a Cochlear Implant Front-End, Interspeech 2007, Antwerp, Belgium, August 2007.

• W. Nogueira, A. Katai, Tamas Harzcos, F. Klefenz, B. Edler, A. Buechner, An Auditory Model Based Strategy for Cochlear Implants, IEEE EMBC 2007, Lyon, France, August 2007.

2006

• W. Nogueira, A. Giese, B. Edler, A. Buechner, 
  Wavelet Packet Filterbank for Speech Processing Strategies in Cochlear Implants, Int. Conf. on Acoustics, Speech, and Signal Processing, Toulouse, France, May 2006.

2005

• W. Nogueira, A. Buechner, B. Edler, Fundamental Frequency Coding in NofM Strategies for Cochlear Implants,118th AES Convention, p. Preprint 6515, Barcelona, May 2005.

​
Conference Contributions
2017

• W. Nogueira, Psychoacoustic masking models applied to sound coding strategies for cochlear implants, CIAP, Lake Tahoe, 2017 (Invited).
• F. Langner, C. McKay, A. Büchner, W. Nogueira, Loudness perception for simultaneous electrical stimulation, CIAP, July 2017.
• B. Krüger, T. Fiedler, P. Baumhoff, D. Shah, A. Kral, A. Büchner, H. Maier, W. Nogueira,  A model based sound coding strategy for laser stimulation in cochlear implant users with residual hearing, CIAP, Lake Tahoe, July 2017.
• N. El Boghdady, F. Langner, W. Nogueira, D. Baskent, E. Gaudrain, The role of spectral resolution in cochlear implant processing under cocktail-party scenarios, CIAP, Lake Tahoe, July 2017.
• S. Sharma, J. Chalupper, M. van Wnrooij, L. Mens, A. Snik, J. avn Opstal, A. Büchner, W. Nogueira, Effect of frequency compression on spatial hearing of bimodal cochlear implant listeners, CIAP, July 2017.
• S. Klawitter, D. M. Landsberger, A. Büchner, W. Nogueira, Perceptual differences between monopolar and phantom electrode stimulation in cochlear implant users, CIAP, Lake Tahoe, July 2017.
• M. Imsiecke, B. Krüger, A. Büchner, W. Nogueira, Electric-acoustic forward masking in cochlear implant users with ipsilateral residual hearing, CIAP, Lake Tahoe, July 2017

• F. Langner, A. Büchner, W. Nogueira, IFOS World Congress Paris, Effect of dynamic range in different stages of signal processing in Cochlear Implant Listeners on Spech, June, 2017.
• W. Nogueira, E. Lopez-Poveda, A. Büchner, B. Krüger, Contralateral Efferent Suppresion of Human Hearing Sensitivity, Association Research Otolaryngology (ARO), Baltimore, February, 2017.
• S. Klawitter, D. M. Landsberger, A. Büchner, W. Nogueira, Perceptual Differences between Monopolar and Phantom Electrode Stimulation, Association Research Otolaryngology (ARO), Baltimore, February, 2017.
• W. Nogueira, E. Lopez-Poveda, A. Büchner, B. Krüger, Die kontralaterale efferente Unterdrückung der Hörempfindlichkeit bei einseitig ertaubten Cochlea-Implantat Trägern, Deutsche Gesellschaft für Audiologie, Aalen, Germany, Ferburary, 2016.
• W. Nogueira, I. Schierholz, M. Goffredo, G. Cosatti, Towards Decoding Speech Sound Source Direction from Electroencephalography in Cochlear Implant Users, Deutsche Gesellschaft für Audiologie, Aalen, Germany, Ferburary, 2016.
• B. Krüger, K. Koka, A. Büchner, W. Nogueira, Physiologische und Psychometrische Characterisierung ipsilateraler Maskierung bei electro-acoustischer Stimulation der Cochlea, Deutsche Gesellschaft für Audiologie, Aalen, Germany, Ferburary, 2016.
• M. Imsiecke, B. Krüger, A. Büchner, W. Nogueira, Elektrisch-akustische Vorwärtsmaskierung bei Cochlea-Implantat Trägern mit ipsilateralem Restgehör, Deutsche Gesellschaft für Audiologie, Aalen, Germany, Ferburary, 2016.

2016

• S. Klawitter, B. Krüger, A. Büchner, W. Nogueira, Development of Electric-Acoustic Pitch Comparisons in Single-Sided-Deaf Cochlear Implant Users, ARO MidWinter Meeting, 20-24 February, San Diego 2016.
• W. Nogueira, L. Litvak, A. Stein, C. Chen, D. M. Landsberger, A. Büchner, Loudness and Pitch Perception using Dynamically Compensated Virtual Channels, ARO MidWinter Meeting, 20-24 February, San Diego 2016.
• B. Krüger, A. Büchner, W. Nogueira, Characterization of Ipsilateral Masking between Acoustic and Electric Stimulation through Cochlear Implants, ARO MidWinter Meeting, 20-24 February, San Diego 2016.
• W. Nogueira, Individualized Speech Processing to Improve Hearing Outcomes, 19 Deutsche Gesellschaft für Audiologie, 9-12 March, Hannover (Invited Talk).
• W. Nogueira, Th. Lenarz, A. Büchner, Analysis of Data Logging in Cochlear Implant Users, 19 Deutsche Gesellschaft für Audiologie, 9-12 March, Hannover.
• T. Jürgens, A. Büchner, V. Hohmann, W. Nogueira, Factors affecting Individual Speech Intelligibility Prediction in Cochlear Implant Listeners using a Model-Based Analysis,  19 Deutsche Gesellschaft für Audiologie, 9-12 March, Hannover.
• S. Klawitter, B. Krüger, A. Büchner, W. Nogueira, Betrachtung der Tonhöhenwahrnehmung bei Cochlea-Implantat-Trägern mit einseitiger Taubheit über ein Jahr nach Erstanpassung, 19 Deutsche Gesellschaft für Audiologie, 9-12 March, Hannover.
• W. Nogueira, B. Krüger, D. Landsberger, A. Büchner, Development and Application of a Personalized Model of the Electrically Stimulated Auditory Nerve, 47. Jahrestagung Der Deutschen Gesellschaft für Medizinphysik, Würzburg, .7-10 September, 2016.
• W. Nogueira, musIC 2.0: Musik für Cochlea-Implantate, Digital Sounds, October 20, Hannover, 
• W. Nogueira, Signal Processing Algorithms for Improved Speech and Music Perception with Cochlear Implants, ICanHear Conference, 23rd November, 2016 (Invited Talk).
• W. Nogueira, Sound Coding Strategies for Cochlear Implants, Medical Bionics Summer School, August 27th-September 3rd, Split, Croatia, 2016 (Invited Talk).
• W. Nogueira, J. Pons, J. Janer, A. Büchner, Source Separation Algorithms to Remix Music Pieces for Improving the Music Experience in Cochlear Implant Users, Music and Cochlear Implants Symposium, Eriksholm Research Center, Denmark, October, 2016.
• W. Nogueira, I. Schierholz, C. Kantzke, P. Sandmann, Decoding Speech Sound Source Direction from Electroencephalography Data using Cochlear Implant Vocoder Simulations, 9th Interantional Symposium on Objective Measures in Audiotry Implants, June 15-18, Szeged, Hungary.
• B. Krüger, A. Büchner, T. Lenarz, W. Nogueira, Elektro-akustische Interaktionen bei Hybridversorgung, 87 Jahresversammlung Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie Kongress, 4-7 Mai, Düsseldorf, 2016.
• B. Krüger, K. Koka, A. Büchner, W. Nogueira, Physiological and Psychometric Characterization of Ipsilateral Masking between Acoustic and Electric Stimulation through Cochlear Implants, 9th Interantional Symposium on Objective Measures in Audiotry Implants, June 15-18, Szeged, Hungary.

2015 

• W. Nogueira, A. Büchner, T. Lenarz, Cochlear Implant Technology, European Congress of Neurorehabilitation, Vienna, December 2015.
• W. Nogueira, A. Büchner, G. Ashida, W. Würfel, Development of a Model of the Electrically Stimulated Auditory Nerve, International Conference on Biomedical Technology, Hannover, October 2015.
• B. Krüger, A. Büchner, W. Nogueira, Characterization of Ipsilateral Masking between Acoustic and Electric Stimulation through Cochlear Implants, Closing the Auditory Loop Symposium, Hannover, October 2015.
• W. Nogueira, Signal Processing for Implantable Auditory Prostheses, Tutorial at the Closing the Auditory Loop Symposium, Hannover, October 2015.
• F. Langner, A. Büchner, W. Nogueira, Analysis of Simultaneous Multi-Electrode Stimulation Strategies: Creating Independent Channels, Closing the Auditory Loop Symposium, Hannover, October 2015.
• W. Nogueira, L .Litvak, A. Stein, C. Chen, D. Landsberger, A. Büchner, Loudness and pitch perception using Balanced Quadrupolar Virtual Channel Stimulation, CIAP 2015, Lake Tahoe, 2015.
• T. Rode, A. Büchner, W. Nogueira, Spectral Contrast Enhancement improves Speech Intelligibility in NofM Strategies for Cochlear Implants, CIAP 2015, Lake Tahoe, 2015.
• T. Jürgens, V. Hohmann, A. Büchner, W. Nogueira, A Model of Individual Cochlear Implant User's Speech-in-Noise Performance, CIAP 2015, Lake Tahoe, 2015.
• R. Penninger, W. Nogueira, A. Büchner, Stimulating on multiple electrodes improves temporal pitch perception, CIAP 2015, Lake Tahoe, 2015.
• E. Kludt, W. Nogueira, A. Büchner, Individualization of a temporal masking parameter in a cochlear implant speech processing strategy: TPACE, CIAP 2015, Lake Tahoe, 2015.
• W. Nogueira, P. Herrera, Creation and Analysis of New Music Compositions for Cochlear Implant Users, European Symposium Pediatric Cochlear Implants, Tolouse, June, 2015.
• W. Nogueira, T. Rode, A. Büchner, Optimization of a Spectral Contrast Enhancement Algorithm for Cochlear Implants based on a Vowel Identification Model", International Symposium in Hearing (ISH), Groningen, Netherlands, June 2015.
• W. Nogueira, P. Herrera, Creation and Analysis of New Music Compositions for Cochlear Implant Users, Deutsche Gesellschaft für Audiologie (DGA) Conference, Bochum, February 2015.
• W. Nogueira, T. Lenarz, A. Büchner, A Personalized Model of the Cochlear Implant Electrode-Nerve-Interface and its Applications, Deutsche Gesellschaft für Audiologie (DGA) Conference, Bochum, 2015.
• T. Jürgens, V. Hohmann, A. Büchner, W. Nogueira, Individuelle Vorhersage der Sprachverständlichkeit von Cochleaimplantatträgern, Deutsche Gesellschaft für Audiologie (DGA) Conference, Bochum, 2015.
• S. Klawitter, B. Krüger, A. Büchner, W. Nogueira, Betrachtung der Tonhöhenwahrnehmung bei Cochlea-Implantat-Trägern mit einseitiger Taubheit über ein Jahr nach Erstanpassung, Deutsche Gesellschaft für Audiologie (DGA) Conference, Bochum, 2015.
• T. Rode, A. Büchner, W. Nogueira, Spectral Contrast Enhancement Improves Speech Intelligibility in NofM CI Coding Strategies,  Deutsche Gesellschaft für Audiologie (DGA) Conference, Bochum, 2015.
• B. Krüger, A. Büchner, W. Nogueira, Charakterisierung von ipsilateraler Maskierung zwischen akustischer und elektrischer Stimulation durch Cochlea Implantate, Deutsche Gesellschaft für Audiologie (DGA) Conference, Bochum, 2015.
• W. Nogueira, W. Würfel, T. Rode, A. Büchner, Optimization of a Spectral Contrast Enhancement Algorithm for Cochlear Implants based on an Individualized Electrode-Nerve-Interface Model, ARO 2015, Baltimore, USA, February 2015.

• S. Klawitter, A. Büchner, W. Nogueira, Development of electric-acoustic pitch comparisons in single-sided-deaf cochlear implant users, ARO 2015, Baltimore, USA, February 2015.

2014

• W. Nogueira, A. Büchner, A Model of Music Complexity for Cochlear Implants, EAONO 2014, Siena, 2014.
• W. Nogueira, P. Herrera, Towards a Model of Music Complexity for Cochlear Implants, CI2014, Munich, 2014.

• W. Nogueira, T. Rode, R. Penninger, E. Kludt, A, Büchner, Towards a Model Based Coding Strategy for Cochlear Implants based on Spectral Contrast Enhancement, CI 2014, Munich, June, 2014, Invited.
• T. Rode, A, Büchner, W. Nogueira,  Spectral Contrast Enhancement in CI coding Strategies: A Real Time Implementaion, CI 2014, Munich, June, 2014.
• W. Nogueira, W. Würfel, A. Büchner, A Model of the Electrically Stimulated Cochlea, DAGA 2014, Oldenburg, March 2014.

2013

• W. Nogueira, Finite element study on chochlear implant electrical activity, ICBT 2013 : International Conference on Biomedical Technology, Hannover, Germany, November 20-22, 2013.

• G. Roma, W. Nogueira, P.Herrera, Recurrence Quantification Analysis Features for Environmental Sound Recognition, IEEE WASPAA, New Paltz, USA 2013.

• W. Nogueira, New Music Compositions for Cochlear Implant Users, Conference on Implantable Auditory Protheses, Lake Tahoe, USA 2013.

2012

• A. Buechner, T. Lenarz, L. Gaertner, W. Nogueira,Spread of Excitation Measures using Current Steering stimuli, Objective Measures Conference 2012, Amsterdam, September 2012.
• W. Nogueira, J. Hidalgo, R, Marxer, J. Janer, A Low Latency Source Separation Algorithm for Cochlear Implants, Audis Workshop 2012, Aachen, September, Germany

• W. Nogueira, A. Büchner, Conveying Low Frequency information through analoge stimulation in Cochlear Implants, EUSIPCO 2012, Bucarest, August 2012.
• W. Nogueira, M. Haro, P. Herrera, X. Serra, Music Perception in Cochlear Implant Users, ISABEL 2011, Barcelona, 2012.

2011

• W. Nogueira, A. Buechner, T. Lenarz, L. Gaertner,Spread of Excitation Measures for Virtual Channels Stimuli in Cochlear Implant Users, IEARSG 2011, Moscow, June 2011
• W. Nogueira, A. Foerstel, A. Saoji, L. Litvak, V. Hamacher,T. Rottmann, T. Lenarz, A. Buechner Evaluation of a new signal processing strategy including a partial bipolar channel to transmit low frequency information,CIAP 2009, Asylomar, USA, July 2011.

• W. Nogueira, L. Hopner , V. Hamacher , Th. Lenarz, A. Büchner, Use of hearing aid preprocessing techniques with cochlear implant users, 10th European symposium on Paediatric Cochlear Implantation, Athens, May 2011
• L. M. Litvak, A.  Saoji, A.Bhattacharya, Smita Agrawal, W. Nogueira, C. Frohne-Büchner , A. Büchner, Charles Finley, and D.M. Landsberger, Functionally Extending The Electrode Array Longitudinally Using Phantom Stimulation Protocols, CIAP 2009, Asylomar, USA, July 2011.
• C. Frohne-Büchner, W. Nogueira, L. Hoeppner, T. Rottmann, V. Hamacher, T. Lenarz, A. Büchner, Benefit Of Directional Microphone Systems From Hearing Aids For Cochlear Implant Users, CIAP 2009, Asylomar, USA, July 2011.
• W. Nogueira, A. Foerstel, A. Saoji, L. Litvak, V.r Hamacher, T. Rottmann, T. Lenarz, A. Buechner, Evaluation Of A New Signal Processing Strategy Including A Partial Bipolar Channel  To Transmit Low Frequency Information, CIAP 2009, Asylomar, USA, July 2011.
• W. Nogueira, L. Hoepnner, T. Rottmann, V. Hamacher, T. Lenarz, A. Büchner, Nutzen der Richtmikrofontechnik von Hörgeräten bei Cochlea-Implantat-Trägern, DGA Jena, 2011.
• A. Büchner, L. Hoepner, W. Nogueira, V. Hamacher, T. Lenarz, Einsatz von Hörgeräte-Vorberarbeitungs-Techniken bei Cochlea-Implantat-Trägern, DGA Jena, 2011.
• L. Hoepner, W. Nogueira, T. Rottmann, V. Hamacher, T. Lenarz, A. Büchner, Nutzen eines Algorithmus zur Unterdrückung transienter Störgeräusche in Cochlea-Implantat-Systeme, DGA Jena, 2011.
• L. Gärtner, A. Büchner, T. Lenarz, W. Nogueira, Spread-of-Excitation-Messungen mit virtuellen Stimulationskanälen bei Cochlea-Implantat-Patienten, DGA Jena, 2011.

2010

• W. Nogueira, et.al, Parameterization of individual’s neural interface, Objective Measures in Auditory Implants -6th International Symposium, St. Louis, USA, Sept 2010.

2009 

• W. Nogueira, P. Dyckmans, F. Vanpoucke, HRStream: The High resolution streaming interface, CIAP 2009, Lake Tahoe, USA, July 2009.

• W. Nogueira, P. Dyckmans, F. Vanpucke, Speech Recognition Technology in cochlear implant rehabilitation, ESCPI 2009,Warshaw, Poland, March 2009.

2008

• W. Nogueira, A. Buechner, J. Ostermann, B. Edler, Signal Processing Strategies for Current Steering strategies in Cochlear Implants, itg 2008, Aachen, Germany, October 2008.

2007

• W. Nogueira, T. Harzcos, A. Buechner, J. Ostermann, B. Edler, Automatic Speech Recognition with a Cochlear Implant Front-End, Interspeech 2007, Antwerp, Belgium, August 2007.

• W. Nogueira, A. Katai, Tamas Harzcos, F. Klefenz, B. Edler, A. Buechner, An Auditory Model Based Strategy for Cochlear Implants, IEEE EMBC 2007, Lyon, France, August 2007.

2006

• W. Nogueira, A. Giese, B. Edler, A. Buechner, 
  Wavelet Packet Filterbank for Speech Processing Strategies in Cochlear Implants, Int. Conf. on Acoustics, Speech, and Signal Processing, Toulouse, France, May 2006.

2005

• W. Nogueira, A. Buechner, B. Edler, 
  Fundamental Frequency Coding in NofM Strategies for Cochlear Implants
  118th AES Convention, p. Preprint 6515, Barcelona, May 2005.

Challenge Submissions
2016

• W. Nogueira, ​Sound Scene Classification based on Monaural and Binaural Features, IEEE DCASE 2016 Challenge: Acoustic Scene Classification.

2014

• W. Nogueira, EEG Sound Browser, Maker Faire Hannover, 2014

2013

• Waldo Nogueira, Gerard Roma and Perfecto Herrera, Automatic Event Classification Using Front End Single Channel Noise Reduction, MFCC features and a Support Vector Machine Classifier, IEEE AASP Challenge, IEEE WASPAA, October 2013.
• G. Roma, W. Nogueira, P.Herrera, Recurrence Quantification Analysis Features for Environmental Sound Recognition, IEEE AASP Challenge, IEEE WASPAA, October 2013.
• Waldo Nogueira, Gerard Roma and Perfecto Herrera, Sound Scene Classification  based on MFCC features and a Support Vector Machine Classifier, IEEE AASP Challenge, IEEE WASPAA, October 2013.