The Autosegmental-Metrical Theory of Intonational Phonology
The chapter outlines the basic principles of the autosegmental-metrical (AM) theory of intonational phonology. AM posits that at the phonological level intonation consists of a string of L(ow) and H(igh) tones (i.e. a string of tonal autosegments) that associate with metrical heads and phrasal boundaries. Phonetically, tones are realized as tonal targets, specific f0 points defined by their scaling and alignment; scaling refers to the pitch height of the tonal target, and alignment to the synchronization of the target with the segmental material that reflects its phonological association (typically stressed syllables and boundary-adjacent syllables). The chapter explains these essential tenets of AM in some detail and discusses how they differ from those of other models of intonation and what consequences these differences have for modelling and predicting the realization of pitch contours. The chapter presents the basics of phonological representation and phonetic modelling in AM, and briefly touches on intonational meaning and AM applications.