Abstract
Previous studies have suggested that there is a difference between the Czech trills /r ̝/ and /r/ with respect to the airflow required to produce each trill. This study examines this question using an airflow meter. Five speakers of Czech produced /r ̝/ and /r/ in the real words řád “order,” pařát “talon,” tvař “face,” rád “like,” paráda “great,” and tvar “shape.” Airflow data were recorded using Macquirer. The data indicate a higher airflow during the production of /r ̝/ compared to /r/. /r ̝/ was produced with approximately 3 l/s more than /r/. The increased airflow is necessary to cross the boundary of laminar flow into turbulent flow and supports previous findings that /r ̝/ is produced with breathy voice, which facilities trilling during frication. The data also suggests that one of the factors that makes the plain trill /r/ difficult to produce is that the airflow required to produce a sonorous trill is tightly constrained. The boundaries between trill production and the production of frication are only a few l/s apart and thus requires careful management of the laryngeal mechanisms, which control airflow.
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