ISCA Archive Interspeech 2014
ISCA Archive Interspeech 2014

Modeling coarticulation in continuous speech

Brian O. Bush, Alexander Kain

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 sentence-level 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.

doi: 10.21437/Interspeech.2014-51

Cite as: Bush, B.O., Kain, A. (2014) Modeling coarticulation in continuous speech. Proc. Interspeech 2014, 193-197, doi: 10.21437/Interspeech.2014-51

  author={Brian O. Bush and Alexander Kain},
  title={{Modeling coarticulation in continuous speech}},
  booktitle={Proc. Interspeech 2014},