ISCA Archive IberSPEECH 2022
ISCA Archive IberSPEECH 2022

Analysis of iterative adaptive and quasi closed phase inverse filtering techniques on OPENGLOT synthetic vowels

Marc Freixes, Joan Claudi Socoró, Francesc Alías

Three-dimensional source-filter models allow for the articulatory-based generation of voice but with limited expressiveness yet. From the analysis of expressive speech corpora through glottal inverse filtering techniques, it has been observed that both the vocal tract and the glottal source play a key role in the generation of different phonation types. However, the accuracy of the source-filter decomposition depends on the considered technique. Current Quasi Closed Phase (QCP) and Iterative Adaptive Inverse Filtering (IAIF) based approaches present pretty good results, despite difficult to compare as they are obtained from different experiments. This work aims at evaluating the performance of these stateof- the-art methods on the reference OPENGLOT database, using its repository with synthetic vowels generated with different phonation types and fundamental frequencies. After optimizing the parameters of each inverse filtering approach, their performance is compared considering typical glottal flow error measures. The results show that QCP-based techniques attain statistically significant lower values in most measures. IAIF variants achieve a significant improvement on the spectral tilt error measure with respect to the original IAIF, but they are surpassed by QCP when spectral tilt compensation is applied.


doi: 10.21437/IberSPEECH.2022-4

Cite as: Freixes, M., Socoró, J.C., Alías, F. (2022) Analysis of iterative adaptive and quasi closed phase inverse filtering techniques on OPENGLOT synthetic vowels . Proc. IberSPEECH 2022, 16-20, doi: 10.21437/IberSPEECH.2022-4

@inproceedings{freixes22_iberspeech,
  author={Marc Freixes and Joan Claudi Socoró and Francesc Alías},
  title={{Analysis of iterative adaptive and quasi closed phase inverse filtering techniques on OPENGLOT synthetic vowels }},
  year=2022,
  booktitle={Proc. IberSPEECH 2022},
  pages={16--20},
  doi={10.21437/IberSPEECH.2022-4}
}