Modeling gradient processes in Polabian vowel chain shifting and blocking
This paper presents an analysis of two interacting sound changes in the extinct West Slavic language Polabian. Polabian is
known to have two types of vowel innovations: (i) the incorporation of acoustic properties from consonant secondary co-articulations (either
palatalization or velarization) and (ii) a systematic rotation of vowels (
Timberlake 1995). This
paper argues that the innovation in (ii) is a vowel chain shift similar to those analyzed in
Labov
(1994). Unlike the other languages surveyed in
Labov (1994), Polabian has phonologically
predictable exceptions to the general direction of vowel movement through the acoustic space. Unlike previous work on Polabian, this paper
proposes that the vowel chain shift operated simultaneously with the innovation in (i) resulting in phonologically predictable exceptions.
This paper tests
Timberlake’s (1995) proposal and the current proposal in a Harmonic Grammar
(
Flemming 2001) which uses
Purcell’s (1979) acoustic
data from Russian as a proxy. The model only captures the correct distribution of vowel reflexes under the assumption that co-articulatory
based innovations and vowel chain shifting were active at the same time.
Article outline
- 1.Introduction
- 1.1The structure of co-articulation as a sound change
- 2.The Polabian data
- 2.1From Late Common Slavic to Polabian
- 2.2Previous accounts of Polabian vowel innovations
- 2.3Towards a new account
- 2.4Summary of proposals
- 3.Modeling vowel chain shifting
- 3.1Previous chain shift models
- 3.2A Harmonic Grammar of Polabian
- 4.Analysis
- 4.1Harmonic Grammar implementation
- 4.2Harmonic Grammar summary
- 5.Conclusion
- Acknowledgments
- Notes
-
References