tonit, tunit

• In tonal languages (such as mandarin), tone is lexical, meaning that (a)a  tone is associated with a segment and that (b) a change in the tone of the segment changes the meaning of the word. This is called a"tone unit (tonit)" (cf. Charles-James N. Bailey).  Pitch accent languages fall in the same category.
• In intonational languages (like English), the tone is suprasegmental, meaning that tone spreads across segments. This is called a "tune unit (tunit)"

C-J.N Bailey Intonation:

• tunit =  anacruis (which exists in the first tunit) + head + tail
• tunit + tunit + tunit  = anacrusis + head + tail + head + tail  + head + tail
• cadence, a concept is abused by the naive in dialect training =  the tail of the tune
• tunit = precadence + cadence
• the head of a tunit =  a stressed syllable of a focus [ +focus] word
• stressed syllables of [-focus] words are NOT tunit heads.
• the anacrutic tone: mid-toned (neutral); otherwise, low or high tone
• check

Discourse Intonation

• Tone units, similar to tunits above.
• tone unit = proclictic segment + tonic segment + enclictic segment
• tonic segment =  1 or 2 prominent syllables
• in 2-prominent syl tone unit = onset (1st prom. syl) + tonic syl (pitch change or tone) (TOBI pitch accent fits the tonic syl)
• proclictic, enclitic segments = no prom. syl
• unique to DI = sub-components in tone units (prominence, tone, key, termination) and speaker options
• prominence sub-system: " Where the speaker chooses to say something he believes the hearer cannot take for granted from the existential paradigm, he makes it prominent. Whenever this paradigm is reduced to a choice of one however, the item becomes non-prominent."

British School:

• tone unit = pre-head  + head + tonic syl + tail
• pre-head = all unstressed syl preceding the first stressed syl
• head = part of a tone unit that extends from the first syl up to (not including) the tonic syl
• tail = any syl b/w the tonic syl and the end of the tone unit

Luciano Canepari:

• intonation group = pre-intoneme + intoneme
• intoneme = pretonic syl + tonic syl + one or two posttonic syl
• preintoneme = one or more stressed (protonic) and unstressed syl (intertonic)
• preintoneme = antetonic + 1st pro + 1st  inter + pro + inter + last  pro +  last inter 
• antetonic = initial unstressed syl
• intertonic = unstressed syl
• protonic/tonic = stressed syl

Same at