ABSTRACT
This chapter shows how elusive is evidence for interaction between phonetic processes and morphological structure. It explains that morphonology is an interaction such that morphological structures contribute to the integration of phonetic processes into a language. Hypermetaphony refuses modes of representation which are appropriate either solely to phonetic processes or solely to morphological alternation. Since phonetic and morphological phenomena interact, one might be tempted to collapse them into a single representational format: either input-and-rule based, so that morphological alternants, like phonetic outputs, are derived by rules acting on unique underlying representations, or representation-based, with representation both of morphologized alternating outputs and inputs. Beyond the insights that morphonological phenomena can offer into the relationship between morphological structure and phonetic processes, they undermine the pervasive assumption that formal redundancy is an adequate criterion for the identification and characterization of meaningful sound differences.
