French uvular /ʁ/ is usually considered as problematic due to its variability, especially in positions such as word initial and word final.
In this presentation, physiological and aerodynamic analyses allowed us to determine its major axes of variation as well as to validate the use of several acoustic measurements.
An acoustic study is then presented on large corpora of continuous speech, so as to test the variability of French /ʁ/ in terms of the aforementioned results. Finally, a parallel with perception is drawn.