Medical Physics

Dr. rer. nat. Christoph Völker

contact

Medical Physics Section
Carl von Ossietzky-Universität Oldenburg
D-26111 Oldenburg
Germany

 
e-mail: christoph.voelker(at)uni-oldenburg.de

phone: ---
fax:     +49 441 798-3902

office location: ---

 

 

research interests

  • comprehensive evaluation of hearing aid algorithms (also see TaPE):

  • parameter optimization of hearing aid algorithms
  • meta-controllers for algorithms
  • aided patient performance prediction (APPP):

  • binaural hearing aid algorithms
  • creating meaningful diagrams ;-)

associated projects

peer reviewed publications

  • Christoph Völker, Birger Kollmeier, Stephan M. A. Ernst (2016). Hearing aid fitting and fine-tuning based on estimated individual traits. Technical Report. International Journal of Audiology. (PDF-Download).
  • Christoph Völker, Giso Grimm, Matthias Vormann, Volker Hohmann, Birger Kollmeier, Stephan M. A. Ernst (2016). Development and evaluation of an unsupervised model-based multidimensional parameter optimization for hearing aid algorithms. International Journal of Audiology. In Minor Revision.
  • Christoph Völker, Thomas Bisitz, Rainer Huber, Birger Kollmeier, Stephan M. A. Ernst (2016). Modifications of the MUlti Stimulus test with Hidden Reference and Anchor (MUSHRA) for use in audiology. International Journal of Audiology. (PDF-Download)
  • Regina M. Baumgärtel, Martin Krawczyk-Becker, Daniel Marquardt, Christoph Völker, Hongmei Hu, Tobias Herzke, Graham Coleman, Kamil Adiloglu, Stephan M. A. Ernst, Timo Gerkmann, Simon Doclo, Birger Kollmeier, Volker Hohmann, and Mathias Dietz (2015). Comparing binaural signal processing strategies I: Instrumental evaluation. Trends in Hearing January-December 2015 19. First published on December 30, 2015. doi:10.1177/2331216515617916
  • Christoph Völker, Anna Warzybok, and Stephan M. A. Ernst (2015). Comparing binaural signal processing strategies III: Speech intelligibility of normal-hearing and hearing-impaired listeners. Trends in Hearing January-December 2015 19. First published on December 30, 2015. doi:10.1177/2331216515618609

conference proceedings, abstracts, posters

 

  • Christoph Völker, Thomas Bisitz, Rainer Huber, Matthias Vormann, Stephan M. A. Ernst. Perceptual Evaluation Methods – applicable for elder and technical inexperienced participants? The Journal of International Advanced Otology. 12th European Federation of Audiology (EFAS) Congress, Istanbul, Turkey, May 27-30th, 2015. Abstract Book.
  • Christoph Völker, Thomas Bisitz, Rainer Huber, Stephan M. A. Ernst. Adaptions for the MUlti Stimulus test with Hidden Reference and Anchor (MUSHRA) for elder and technical unexperienced participants. In: DAGA 2015, 41. Jahrestagung für Akustik, Nürnberg, 2015. (pdf)
  • Christoph Völker, Stephan M. A. Ernst. Evaluation of binaural hearing aid algorithms. Poster for H4a-Symposium, Oldenburg, 2014. (pdf)
  • Christoph Völker, Stephan M. A. Ernst. Objektive und subjektive Bewertung von binauralen Hörgeräte-Algorithmen in akustisch realistischen Testbedingungen. Abstract for DGA-Jahrestagung, Oldenburg, 2014. (pdf)
  • Christoph Völker, Stephan M. A. Ernst. Technical and subjective evaluation of binaural signal processing algorithms for hearing aids in realistic conditions. Poster for H4a-Symposium, Hannover, 2013. (pdf)
  • Christoph Völker, Giso Grimm, Stephan M. A. Ernst. Objective Evaluation of Binaural Noise Reduction Schemes. In: Proceedings AIA-DAGA 2013 Conference on Acoustics, 2013. (pdf)

grants and stipends

  • 2015: DGA e.V. Kongress-Stipendium (400,-)

theses

  • Christoph Völker. Instrumental and Perceptual Evaluation of Hearing Devices - Methods and Applications. PhD Thesis. Oldenburg, 2016. (pdf). (PhD defense talk).
  • Christoph Völker. Vorhersage höherer Formantfrequenzen aus f0, F1 und F2 unter Verwendung verschiedener sprecherspezifischer Vokaltraktmodelle. Magister-Thesis. Kiel, 2009. (pdf)
  • Christoph Völker. Beurteilende linguistische Analyse eines Systems zur Stimmenumwandlung im Hinblick auf die Natürlichkeit der transformierten Stimme. Bachelor-Thesis. Kiel, 2007. (pdf)

teaching

  • "LPC-Part" of Projektpraktikum Angewandte und medizinische Akustik (WS 2013/2014)
  • Tutor at Numerische Methoden der Physik / Numerics (SS 2013)
  • "LPC-Part" of Projektpraktikum Angewandte und medizinische Akustik (WS 2012/2013)

curriculum vita

since 02/2016Teacher at Landesberufsschule für Hörgeräteakustiker, Lübeck
07/2012-01/2016PhD Student at Medizinische Physik, University Oldenburg
04/2011–06/2012Projektingenieur at Akustik Busch, Kronshagen
07/2009–03/2011Research at Institut für Phonetik und digitale Sprachverarbeitung, University Kiel