Rhythmic adjustments and structural effects on accentuation in complex noun phrases are potentially a source of difficulty for a left-to-right phonological approach to synthetic intonation. Rhythmic adjustments can be handled by creating accentual alternations; durational aspects of rhythm are treated without recourse to an overall rhythmic structure, by assigning different durations to different syllable types defined by the rules. Structural effects, though more of a problem, can be incorporated into the existing model as more sophisticated real-time grammatical and pragmatic analyses become possible.