ISCA Archive Eurospeech 1999
ISCA Archive Eurospeech 1999

Selective prosodic post-processing for improving recognition of French telephone numbers

Katarina Bartkova, Denis Jouvet

This study describes a selective prosodic post-processing procedure for improving the recognition of telephone numbers in French. The aim of the post-processing procedure is to recover recognition errors made by an HMM based ASR system. Instead of a global post-processing, this paper proposes a selective one. Post-processing is carried out only on some recognised numbers and only if its associated frequent confusion is also present in the N-best candidates. In such a case the discrimination between the solutions is carried out by checking the duration of a specific segment in a pertinent prosodic position. On the different data used in this study, about 23 % of the substitution errors are considered as being possible to recover with the selective duration post-processing and of this amount about 40 % of the errors are actually recovered.


doi: 10.21437/Eurospeech.1999-70

Cite as: Bartkova, K., Jouvet, D. (1999) Selective prosodic post-processing for improving recognition of French telephone numbers. Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999), 267-270, doi: 10.21437/Eurospeech.1999-70

@inproceedings{bartkova99_eurospeech,
  author={Katarina Bartkova and Denis Jouvet},
  title={{Selective prosodic post-processing for improving recognition of French telephone numbers}},
  year=1999,
  booktitle={Proc. 6th European Conference on Speech Communication and Technology (Eurospeech 1999)},
  pages={267--270},
  doi={10.21437/Eurospeech.1999-70}
}