Prosody segmentation;
The Head? is not mandatory. It is the part of the Tone unit(TU) that extend from the first stressed syllable up to, but not including the nucleus.
Pre Head? is made of al the unstressed syllables in the TU preceding the first stressed syllable.
Tail? All the syllables stressed or unstressed found after the nucleus.
Prosody segmentation;
The Head? is not mandatory. It is the part of the Tone unit(TU) that extend from the first stressed syllable up to, but not including the nucleus.
Pre Head? is made of al the unstressed syllables in the TU preceding the first stressed syllable.
Tail? All the syllables stressed or unstressed found after the nucleus.