Modeling coarticulation in continuous speech

Brian O. Bush, Alexander Kain

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Modeling coarticulation in speech has been largely limited to short sequences and/or limited phonetic context. We introduce a methodology for modeling both formant frequency and bandwidth in continuous speech, allowing examination of sentencelevel coarticulation. The model represents continuous trajectories as a combination of overlapping local trajectories, which are represented by a weighted-addition of acoustic event targets by sigmoidal coarticulation functions characterized by slope and position. Estimation is achieved using a combination of hill-climbing and grid-search, with global target, joint slope for identical contexts, and local position parameters. We evaluate model performance for two speakers using an intelligibility test that compares vocoded model output to a purely vocoded and a natural condition.

Original languageEnglish (US)
Pages (from-to)193-197
Number of pages5
JournalProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
StatePublished - 2014
Externally publishedYes
Event15th Annual Conference of the International Speech Communication Association: Celebrating the Diversity of Spoken Languages, INTERSPEECH 2014 - Singapore, Singapore
Duration: Sep 14 2014Sep 18 2014


  • Coarticulation
  • Continuous speech
  • Formants

ASJC Scopus subject areas

  • Language and Linguistics
  • Human-Computer Interaction
  • Signal Processing
  • Software
  • Modeling and Simulation


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