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Personal Information Gea de Jong-Lendle

Official Name & Address

Dr. MPhil. Gea de Jong-Lendle

Philipps-Universität Marburg
Institut für Germanistische Sprachwissenschaft
Arbeitsgruppe Phonetik
Pilgrimstein 16
35032 Marburg

Link zum UMR-Verzeichnis

Academic posts

2017- Senior Lecturer/Scientist (Studien Rätin), Philipps-Universität Marburg
2016-

Head Forensic Phonetics, Philipps-Universität Marburg
Specialisation: speaker comparison, speaker profiling, transcription, and voice lineups.

2016-2017 Deputy-Professor (Vertretungsprofessur), Philipps-Universität Marburg
2010-2016 Senior Scientist/Lecturer (Akademische Rätin): Phonetics Department, Institut für Germanistische Sprachwissenschaft, Philipps-Universität Marburg
2006-2008 Senior Research Associate, Department of Linguistics, University of Cambridge
2000-2005 Researcher/Lecturer, Language and Communication Science Dept. City University, London.
2000-2005

Lecturer, M.Phil. Computer Speech and Language Processing, Engineering Dept, Cambridge University.

Academic Qualifications

  • 1998                     PhD. Linguistics, Linguistics Department, University of Florida, Gainesville, USA.
                                   Thesis: Earwitness Characteristics and Speaker Identification Accuracy 
  • 1993                     MPhil. Computer Speech and Language Processing, Engineering Department, University of Cambridge, UK.
  • 1992                     BSc. Computational Linguistics, Cum Laude (Artificial Intelligence), University of Groningen, NL.
  • 1988                     Propaedeutics Dutch Language, Dutch Department, University of Groningen, NL.

 Short biography

Since 2016 I am responsible for Forensic Phonetics in Marburg. 

Since 2010 I am a senior scientist/lecturer in phonetics at the University of Marburg in Germany. My main research interests focus on the area of forensic and perceptive phonetics. Other academic posts include Senior Research Associate at the University of Cambridge, Lecturer at City University in London and Guest-Lecturer at the University of Cambridge. 

In addition to my work as a lecturer/researcher at the University of Marburg, I actively participate in training programs for police/justice departments and educational institutions (Selm-Bork: Hessen LKA Fortbildungsgruppe, Münster: Deutsche Hochschule der Polizei, Wiesbaden: HLKA Beratergruppe). 

Since 2007, I provide consultancy for developing forensic laboratories as a forensic expert for the European Commission. 

I have undertaken forensic investigations since 1994, for both prosecution and defense. Currently, I am leading a forensic phonetics team in Marburg conducting forensic analyses in in civil cases and in criminal cases for different police forces in Germany. In the past, I have provided voice analysis services for a number of UK institutes/forces like the Forensic Science Service, Metropolitan Police and Liverpool Police and assisted the Dutch police. 

I hold a PhD in linguistics from the University of Florida, an M.Phil. in Computer Speech and Language Processing from the University of Cambridge and a BSc. in Computational Linguistics from the University of Groningen.

Native speaker of Frisian (West-Frisian: Wâldfrysk variety) and Dutch.

List of selected publications

  1. Hollien, H., Liljegren, K, Martin, C.A., DeJong, G., 1999 Prediction of intoxication levels by speech analysis, Zeitschrift für Dialectologie und Linguistik, Stuttgart, Steiner. 106:40-50.
  2. Hollien, H., DeJong, G., and Martin, C.A., Schwartz, R. and Liljegren, K., 2001 Effects of ethanol intoxication on speech suprasegmentals, J. Acoust.Soc.Amer.110(6), 3198-3206.
  3. DeJong, G. and Honess, T.  2002 The Perception of Speed-Modified Recordings. J. Forensic Linguistics, 44-57.
  4. DeJong, G., Newis, P.R. and Hunt, J. 2002 The effects of repeated copying and recording media on intelligibility, J. Forensic Linguistics, 58-73.
  5. F. Nolan, K. McDougall, G. de Jong and Hudson, T. 2006 A Forensic Phonetic Study of 'Dynamic' Sources of Variability in Speech: The DyViS Project. In: P. Warren and C.I. Watson (eds.), Proceedings of the 11th Australasian International Conference on Speech Science and Technology, 6-8 December 2006, Auckland: Australasian Speech Science and Technology Association, 13-18.
  6. DeJong, G., McDougall, K. and Nolan, F. 2007 Sound change and speaker identity: an acoustic study. In: Christian Müller and Susanne Schötz (eds.), Speaker Classification. Springer.
  7. Hudson, T., DeJong, G., McDougall, K., Harrison, P., and Nolan, F. 2007, F0 statistics for 100 young male speakers of standard southern British English, Proceedings of the 16th ICPhS, August, Saarbrucken, Germany.
  8. Nolan, N., McDougall, K., de Jong, G. and Hudson, T. 2009 The DyViS Database: Style-Controlled Recordings of 100 Homogeneous Speakers for Forensic Phonetic Research. International Journal of Speech, Language and the Law 16.2.
  9. Duckworth, M. McDougall, K., de Jong, G. and Shockey, L. 2011 Improving the Reliability of Formant Measurement. International Journal of Speech, Language and the Law, vol 18.1 2011 35–51.
  10. DeJong-Lendle, G., Nolan, F., McDougall, K., and Hudson, T., 2015, Voice lineups: a practical guide. Proceedings of the 17th ICPhS, August, Glasgow, UK.
  11. DeJong-Lendle, G. 2016 Book Review: M. Jessen, Phonetische und linguistische Prinzipien des forensischen Stimmenvergleichs, Zeitschrift für Dialektologie und Linguistik.
  12. DeJong-Lendle, G. 2016 Der Strafprozess des Jahrhunderts - Die Geschichte eines Piloten, eines deutschen Immigranten, einer skeptischen Wissenschaftlerin und des Beginns der forensischen Phonetik, Literaturkritik.de, August 2016, Marburg: LiteraturWissenschaft.de.
  13. Urke, F., Reetz, H., and De Jong-Lendle, G. 2016 Die Wahrnehmung reduzierter Sprache unter Rauschen, Conference Proceeding Phonetik & Phonologie (P&P), München.
  14. DeJong-Lendle G. (2022) Speaker Identification. In: Guillén-Nieto V., Stein D. (eds) Language as Evidence. Palgrave Macmillan, Cham. https://doi.org/10.1007/978-3-030-84330-4_9.

Selection of recent talks

  1. Rinke, P, Beier, K., Kaul, R. Schmidt, T., Scharinger, M. and DeJong-Lendle, G., 2021 ` Neurophysiological evidences for automatic speaker recognition: Neural correlates of voice familiarity´, Talk presented at the International Association for Forensic Phonetics and Acoustics Annual Conference, Marburg, 22-25 August.
  2. Martin, S., DeJong-Lendle, G., Kehrein, R. and Duckworth, M. 2021 ‚The variability of stuttering: A forensic phonetic study’, Poster presented at the International Association for Forensic Phonetics and Acoustics Annual Conference, Marburg, 22-25 August.
  3. DeJong-Lendle, G., Wack, H., Kehrein, R., Kaul, R., Rinke, P., Beier, K., Schmidt, L. 2021 ` Auditory motorcycle recognition: Experts vs Non-Experts´, Poster presented at the International Association for Forensic Phonetics and Acoustics Annual Conference, Marburg, 22-25 August.
  4. DeJong-Lendle, G., 2021 "Die Stimme der Täter: Was forensische Phonetiker_innen machen. Möglichkeiten und Grenzen”, Heinrich-Heine-Universität Düsseldorf, Oktober 1.
  5. DeJong-Lendle, G., 2021 ‘The voice of crime. An introduction to forensic phonetics. The Chinese University of Hongkong, November 26.
  6. DeJong-Lendle, G., 2022 ‘Forensic phonetics: past and present. Conference: Forensic Linguistics. The University of Verona & The free university of Bozen/Bolzano, May 20.
  7. Moeller, S. and De Jong-Lendle, G. 2022 ‘When singing becomes illegal’, Poster presented at the International Association for Forensic Phonetics and Acoustics Annual Conference, Prague, 10-13 July 2022.
  8. Siewert, M., Gerlach, L., Alexander, A., DeJong-Lendle, G., Lameli, A. and Kehrein, R., 2023 ‘Automatic Speaker Recognition – Does Dialect Switching matter?’, Poster presented at the International Association for Forensic Phonetics and Acoustics Annual Conference, Zürich, 9-12 July 2023.
  9. Lieb, A. and DeJong-Lendle, G. 2023 ‘The Vocal Parameters of Dissociative Identity Disorder’, Poster presented at the International Association for Forensic Phonetics and Acoustics Annual Conference, Zürich, 9-12 July 2023.
  10. DeJong-Lendle, G. 2023 Voice lineups: a comparative study of current methods, International Language and Law Association (ILLA) 19-22 September, Krakow, Polen.
  11. DeJong-Lendle, G., 2023 "The voice of crime, an introduction to forensic phonetics”, the Language, Intersensory Perception, and Speech (LIPS) Lab, Psychological and Brain Sciences University of Massachusetts Amherst, October 11.
  12. DeJong-Lendle, G. and Kehrein, R. 2024 "Wer bin ich? Was Sprache und Aussprache über Menschen verraten”, Ringvorlesung „Dem Verbrechen auf der Spur“. Rechtsmedizin und Kriminaltechnik, Institut für Strafrecht und Strafprozessrecht, Universität zu Köln, 30 Januar.
  13. DeJong-Lendle, G., 2024 ‘Tatort Marburg: forensische Phonetik, Philipps-Universität Marburg, Forum 09. 31 Januar.
  14. DeJong-Lendle, G. 2024 "Alles was Sie sagen...kann gegen Sie verwendet werden. Die Rolle der forensischen Phonetik in Kriminalverfahren”, das Norddeutsche Linguistische Kolloquium zum Thema „Von der Theorie zur Praxis: Linguistik und ihre Relevanz für die Gesellschaft“, Leibniz Universität Hannover, 21 März.