Test materials
This study focuses on the performance of lexical tone identification
by CI users. Lexical tones are carried by syllables that correspond
to meaningful words in the language, and therefore the task of
tone identification essentially becomes a task of word identification.
In our previous study on acoustic simulation of a tone-enhanced
processing method, Cantonese disyllabic words were used for tone
identification by normal-hearing listeners (Yuan et al, 2009). In
each test trial, the subject was presented with a disyllabic word.