Transactions of the Philological Society Volume 107:1 (2009) 31–65
PHONETICS AND PHONOLOGY IN GALLO-ROMANCE PALATALISATION
By EUGENE BUCKLEY University of Pennsylvania
ABSTRACT Palatalisation of the velars ⁄ k, g ⁄ in Gallo-Romance applied not just before the usual front vowels ⁄ i, e, e ⁄ but also, famously, before the low vowel ⁄ a ⁄ . Various scenarios have been proposed regarding the phonetic realisation of ⁄ a ⁄ and its relation to palatalisation. I argue that ⁄ a ⁄ was allophon- ically fronted to [æ] in stressed open syllables, where the vowel eventually merged with ⁄ e,e⁄ . Here the palatalisation was phonetically motivated. But due to the relationship of fronted [æ] to the phonemic category ⁄ a ⁄ , the triggering environment was extended to other tokens of ⁄ a ⁄ , including non-fronted instances in closed syllables. Here the motivation was the abstract phonological connection between the different sur- face realisations of ⁄ a ⁄ .
In this paper I discuss the relationship between two sound changes in Gallo-Romance: the fronting of ⁄ a ⁄ in stressed open syllables, and the palatalisation of ⁄ k, g ⁄ before ⁄ a ⁄ in addition to ⁄ i, e, e ⁄ . I argue that allophonic fronting created the original phonetic conditions for palatalisation, but that the phonological structure of the language led to extension of palatalisation to non-fronted tokens of ⁄ a ⁄ , despite the lack of phonetic motivation in that context. The explanation for the change is therefore partly phonetic and partly phonological. Section 1 provides basic background on the relevant sound changes in Romance and French. Section 2 focuses on the reflexes of Latin ⁄ a ⁄ , in particular the contexts in which it eventually led to front mid ⁄ e,e⁄ . Section 3 discusses the palatalisation of velars before this vowel, and theories about the relationship (if any) to the