8th International Conference on Spoken Language Processing

Jeju Island, Korea
October 4-8, 2004

Language Recognition Using Phone Latices

Jean-Luc Gauvain, Abdel Messaoudi, Holger Schwenk

Spoken Language Processing Group, CNRS-LIMSI, France

This paper proposes a new phone lattice based method for automatic language recognition from speech data. By using phone lattices some approximations usually made by language identification (LID) systems relying on phonotactic constraints to simplify the training and decoding processes can be avoided. We demonstrate the use of phone lattices both in training and testing significantly improves the accuracy of a phonotactically based LID system. Performance is further enhanced by using a neural network to combine the results of multiple phone recognizers. Using three phone recognizers with context independent phone models, the system achieves an equal error rate of 2.7% on the Eval03 NIST detection test (30s segment, primary condition) with an overall decoding process that runs faster than real-time (0.5xRT).

Full Paper

Bibliographic reference.  Gauvain, Jean-Luc / Messaoudi, Abdel / Schwenk, Holger (2004): "Language recognition using phone latices", In INTERSPEECH-2004, 25-28.