5th International Conference on Spoken Language Processing

Sydney, Australia
November 30 - December 4, 1998

A Forensic Phonetic Investigation into Non-contemporaneous Variation in the F-pattern of Similar-sounding Speakers.

Phil Rose

Department of Linguistics (Arts), Australian National University, Australia

A forensic phonetic experiment is described which investigates the nature of non-contemporaneous within-speaker variation for six similar-sounding speakers. Between 8 and 10 intonationally varying tokens of the naturally produced single word utterance hello were elicited from six similar-sounding adult Australian males in two repeats separated by a reading of the "rainbow" passage. Both repeats are compared with a single batch of intonationally varying hello tokens recorded at least one year earlier. Within-speaker variation is quantified by ANOVA on mean non-contemporaneous differences and Scheffe's F for centre frequencies of the first 4 formants at 7 well-defined points in the word. Values for non-contemporaneous within-speaker between-token differences are also given, and their contribution to a Bayesian Likelihood Ratio is exemplified.

Full Paper

Bibliographic reference.  Rose, Phil (1998): "A forensic phonetic investigation into non-contemporaneous variation in the f-pattern of similar-sounding speakers.", In ICSLP-1998, paper 0301.