INTERSPEECH 2004 - ICSLP
This study investigates how phonotactics and position affect the realization of Guoyu T2. 10 speakers read sentences containing syllables of different types in isolation and in various sentential positions. Results showed that N-initial syllables had relatively high onsets, turning points, and offsets while G-initial syllables had low values for all three. V-initial syllables had high turning points and offsets while obstruent-initial syllables had low offsets. In general, offsets were higher than onsets when syllables were read in isolation or sentence-finally. However, in sentence-initial and -medial positions, onsets were be higher in pitch than offsets. V-initial syllables had higher offsets than onsets regardless of positions. In terms of duration, the falling ratio was the highest sentence-medially, especially with L-initial and N-initial syllables. There was no difference in the degree of steepness between the falling and the rising portions of the tone, but female speakers in general showed steeper slopes than male.
Bibliographic reference. Hsu, Hui-ju / Fon, Janice (2004): "Positional and phonotactic effects on the realization of taiwan Mandarin tone 2", In INTERSPEECH-2004, 501-504.