Experimental research on the prominence of prosodic phrases in Putonghua

In this research, three experiments, which are closely related logically, have been completed. Basing on the experimental results, the exist of prosodic phrase prominence in Putonghua has been proved. These experiments also proved that the prominence of prosodic phrase falls on the semantically focal word of the phrase typically, and the duration lengthening of the stressed syllable of the word is one of important acoustic cues of phrase prominence.