Leemann, Adrian and Mixdorff, Hansjörg and O'Reilly, Maria and Kolly, Marie-José and Dellwo, Volker (2014) Speaker-individuality in Fujisaki model f0 features:implications for forensic voice comparison. International Journal of Speech, Language and the Law, 21 (2). pp. 343-370. ISSN 1748-8885
Full text not available from this repository.Abstract
Fundamental frequency (f0) is a highly speaker-specific feature. Consequently, practitioners often use f0 information in forensic casework. Current research principally examines the use of long-term f0 statistics such as f0 means and standard deviations for forensic voice comparison. The present study investigates how short-term f0 features such as measured by the Fujisaki intonation model capture speaker-individuality. Based on data of a homogeneous group of Zurich German speakers, we conducted an experiment on a large corpus of read speech and on a subset of sentences that included speaking style variability (spontaneous vs. read). The latter is characteristic of forensic casework. Speakers demonstrated high between-speaker variability and low within-speaker variability across the two speaking styles for a number of f0 features. Given this evidence of speaker-individuality, we discuss Fujisaki f0 features’ potential for forensic voice comparison.