ISCA Archive Interspeech 2008
ISCA Archive Interspeech 2008

Tree grammars as models of prosodic structure

Joseph Tepperman, Shrikanth S. Narayanan

The common ToBI system of transcription assumes a sequential model of prosody. Many linguists argue for a tree structure explaining the synchronization and interaction among prosodic units. Could tree grammars, used previously in syntax-based language modeling, be used to model prosodic trees? We present a method of converting sequential transcripts into trees, and then demonstrate that modeling trees rather than sequences of prosodic tags results in lower perplexity as well as lower error rates when classifying pitch accents and boundaries on the Boston University Radio News Corpus. This finding could benefit areas like speech synthesis, speech understanding, and pronunciation evaluation.


doi: 10.21437/Interspeech.2008-561

Cite as: Tepperman, J., Narayanan, S.S. (2008) Tree grammars as models of prosodic structure. Proc. Interspeech 2008, 2286-2289, doi: 10.21437/Interspeech.2008-561

@inproceedings{tepperman08b_interspeech,
  author={Joseph Tepperman and Shrikanth S. Narayanan},
  title={{Tree grammars as models of prosodic structure}},
  year=2008,
  booktitle={Proc. Interspeech 2008},
  pages={2286--2289},
  doi={10.21437/Interspeech.2008-561}
}