Possible theoretical relevance of subphonemic vowel reduction in Hungarian

This paper deals with the question whether subphonemic phenomena like phonetically measureable constistent reduction processes have any theoretical, or phonological relevance. The answer may be yes if there is a theoretical background that sees phonological patterns in languages as emergent from the nature of diachronic processes that have been so far explained as consequences of universal innate rules or constraints. The subphonemic process used in the discussion is vowel reduction in Hungarian, for which experimental evidence will be shown.