Syncopes in Australian English

Syncope in informal speech

Various sorts of colloquial reductions might be called "syncope" (the loss of one or more sounds from the interior of a word; especially, the loss of an unstressed vowe)l. It is also called compression.

• English [Au]stra[lia]n > colloquial Strine [stray-an]
• English I [woul]d [ha]ve > I'd've

Source: http://en.wikipedia.org/wiki/Syncope_(phonetics)