Sixth European Conference on Speech Communication and Technology
(EUROSPEECH'99)

Budapest, Hungary
September 5-9, 1999

Navigating German Cities by Spontaneous French Queries

Harouna Kabré, Alexander Waibel

Interactive Systems Laboratories, ILKD, Department of Computer Science, University of Karlsruhe, Germany

This paper reports our efforts on the adaptation of a baseline system trained on clean speech to a task for which French native speakers uttered some Spontaneous French queries while driving a car. When the system is retrained on the new task acoustic data the Word Error Rate (WER) is decreased by 60% compared to our baseline system initial performance on the new task. We show that on spontaneous queries, L of this improvement could be achieved without prior system retraining by a more accurate Language Modelling which takes into account the noises and spontaneous speech effects and by a carefull grapheme/phoneme transcription of foreign words. We also describe the integration of this French system in our Multilingual Navigation System.


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Bibliographic reference.  Kabré, Harouna / Waibel, Alexander (1999): "Navigating German cities by spontaneous French queries", In EUROSPEECH'99, 487-490.