Studies that quantify speech tempo on acoustic grounds typically use one of various rate measures. Explicit comparisons of the distributions generated by these measures are rare, although they help assess the robustness of generalisations across studies; moreover, for forensic purposes it is valuable to compare measures in terms of their discriminating power. We compare five common rate measures-canonical and surface syllable and phone rates, and CV segment rate-calculated over fluent stretches of spontaneous speech produced by 30 English speakers. We report deletion rates and correlations between the five measures and assess discriminating powers using likelihood ratios. Results suggest that in a sizeable English corpus with normal deletion rates, these five rates are closely inter-correlated and have similar discriminating powers; therefore, for common analytical purposes the choice between these measures is unlikely to substantially affect outcomes.
|Title of host publication||Proceedings of International Congress of Phonetic Sciences, August 2019, Melbourne|
|Editors||Sasha Calhoun, Paola Escudero, Marija Tabain, Paul Warren|
|Place of Publication||Canberra|
|Publisher||Australasian Speech Science and Technology Association Inc.|
|Number of pages||5|
|Publication status||Published - Aug 2019|
|Event||19th International Congress of the Phonetic Sciences - Melbourne Convention and Exhibition Centre, Melbourne, Australia|
Duration: 5 Aug 2019 → 9 Aug 2019
|Conference||19th International Congress of the Phonetic Sciences|
|Abbreviated title||ICPhS 2019|
|Period||5/08/19 → 9/08/19|
Lennon, R., Plug, L., & Gold, E. (2019). A Comparison of Multiple Speech Tempo Measures: Inter-Correlations and Discriminating Power. In S. Calhoun, P. Escudero, M. Tabain, & P. Warren (Eds.), Proceedings of International Congress of Phonetic Sciences, August 2019, Melbourne (pp. 785-789). Canberra: Australasian Speech Science and Technology Association Inc..