Improving Children's Speech Recognition by HMM Interpolation with an Adults' Speech Recognizer

Steidl S, Stemmer G, Hacker C, Nöth E, Niemann H (2003)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2003

Original Authors: Steidl Stefan, Stemmer Georg, Hacker Christian, Nöth Elmar, Niemann Heinrich

Publisher: Springer-Verlag

City/Town: Berlin, Heidelberg, New York

Pages Range: 600-607

Conference Proceedings Title: Pattern Recognition, 25th DAGM Symposium, Magdeburg, Germany, September 2003, Proceedings

Event location: Magdeburg DE

URI: http://www5.informatik.uni-erlangen.de/Forschung/Publikationen/2003/Steidl03-ICS.pdf

Abstract

In this paper we address the problem of building a good speech recognizer if there is only a small amount of training data available. The acoustic models can be improved by interpolation with the well-trained models of a second recognizer from a different application scenario. In our case, we interpolate a children’s speech recognizer with a recognizer for adults’ speech. Each hidden Markov model has its ownset of interpolation partners; experiments were conducted with up to 50 partners. The interpolation weights are estimated automatically on a validation set using the EM algorithm. The word accuracy of the children’s speech recognizer could be improved from 74.6 % to 81.5 %. This is a relative improvement of almost 10 %.

Authors with CRIS profile

Stefan Steidl Lehrstuhl für Informatik 14 (Bild- und Sprachverarbeitung) Elmar Nöth Professur für Informatik (Mustererkennung) Heinrich Niemann Technische Fakultät

How to cite

APA:

Steidl, S., Stemmer, G., Hacker, C., Nöth, E., & Niemann, H. (2003). Improving Children's Speech Recognition by HMM Interpolation with an Adults' Speech Recognizer. In Michaelis Bernd, Krell Gerald (Eds.), Pattern Recognition, 25th DAGM Symposium, Magdeburg, Germany, September 2003, Proceedings (pp. 600-607). Magdeburg, DE: Berlin, Heidelberg, New York: Springer-Verlag.

MLA:

Steidl, Stefan, et al. "Improving Children's Speech Recognition by HMM Interpolation with an Adults' Speech Recognizer." Proceedings of the DAGM '03, 25th Pattern Recognition Symposium, Magdeburg Ed. Michaelis Bernd, Krell Gerald, Berlin, Heidelberg, New York: Springer-Verlag, 2003. 600-607.

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