Prosodic features of spoken dialogue were investigated by comparing them with those of read speech. Analyses were conducted on the fundamental frequency contours with a special focus on their relationship to the linguistic information. Results showed that the increase in the amplitude of accent command for word, usually observable in dialogue speech as compared with read speech, largely depends on the role of word in discourse. The increase were also showed to depend on other linguistic factors, such as the accent type and the position in the sentence. Analyses were conducted also for the speech rate and its dynamical change in a simple sentence was clarified. Prosodic rules were then derived for the synthesis of dialogue speech by modifying those formerly developed for read speech. Although all the findings were not incorporated yet in the rules, results of listening test indicated the appropriateness of the modification.
Bibliographic reference. Sakata, Mayumi / Hirose, Keikichi (1995): "Analysis and synthesis of prosodic features in spoken dialogue of Japanese", In EUROSPEECH-1995, 1007-1010.