Intervocalic lenition is not phonological: evidence from Campidanese Sardinian

This paper develops a model of lenition in Campidanese Sardinian. The model treats lenition (and its inverse, fortition) as a predictable consequence of gradient changes in duration associated with prosodic structure. A more typical approach to lenition processes in Campidanese and other languages is to treat them as changes in phonological features. I show here that a phonetic model operating on the output of phonological computations avoids some of the analytical problems associated with such phonological analyses, unifies the phonetic and phonological description of lenition, and captures the relationship between prosody, lenition and duration. While the detailed simulations here are specific to Campidanese, I suggest that the model is broadly applicable to languages with intervocalic lenition processes such as voicing, spirantisation and tapping.