Louisa Stevens (BA MA) is an affiliate of J P French Associates. She worked at J P French Associates from 2004 – 2014 and is a specialist in speaker comparison, transcription and disputed utterance analysis and carries out research into voice quality and individual speaker characteristics. Louisa Stevens was also a Teaching Fellow at the University of York and lectured in forensic speech science at postgraduate level.
Louisa Stevens is a member of the British Association of Academic Phoneticians (BAAP) and sits on the executive committee of the International Association for Forensic Phonetics and Acoustics (IAFPA).
Louisa Stevens has worked for over nine years on hundreds of cases in the areas of forensic speaker comparison, transcription and disputed utterance analysis as well as other miscellaneous cases. She regularly produced reports and gave evidence in the witness box in the UK and abroad.
2004 – 2014 J P French Associates, York.
2004 – Research assistant, ESRC project studying child and child-directed speech.
2007 – present – Teaching Fellow, University of York.
Executive committee member of the International Association for Forensic Phonetics and Acoustics
Member of the British Association of Academic Phoneticians
Publications and presentations
French, P. & Stevens, L. (2013) Forensic speech science. In Jones, M. & Knight, R. (eds.) The Bloomsbury Companion to Phonetics. London: Continuum.
Stevens, L. & French, P. (2012a) Voice quality in studio quality and telephone transmitted recordings. BAAP conference, Leeds, United Kingdom.
Stevens, L. & French, P. (2012b) Voice Quality in Standard Southern British English: distribution of features, inter-speaker variability and the effect of telephone transmission. IAFPA conference, Santander, Spain.
Nolan, F., French, P. McDougall, K., Stevens, L. & Hudson, T. (2011) The role of voice quality ‘settings’ in perceived voice similarity, IAFPA conference, Vienna, Austria.
French, P., Harrison, P., Cawley, L. (now Stevens), Bhagdin, A. & Clermont, F. (2009) Evaluation of the Batvox automatic speaker recognition system for use in UK-based forensic speaker comparison casework. IAFPA conference, University of Cambridge.
Alongside providing expert reports in English and foreign language cases, Louisa Stevens has provided advice and staff training for the Netherlands Forensic Institute.