4th International Conference on Spoken Language Processing

Philadelphia, PA, USA
October 3-6, 1996

Word Boundary Detection using Pitch Variations

G. V. Ramana Rao, J. Srichand

Department of Computer Science and Engineering, Indian Institute of Technology, Madras, India

This paper proposes a method for detecting word boundaries. This method is based on the behaviour of the pitch frequency across the sentences. The pitch frequency (F0) is found to rise in a word and fall to the next word. The presence of this fall is proposed as a means of detecting word boundaries. Four major Indian languages are used and the results show that nearly 85% of the word boundaries were correctly detected. The same method used for German language shows that nearly 65% of the word boundaries were correctly detected. The implications of these result in the development of a continuous speech recognition system are discussed.

Full Paper

Bibliographic reference.  Rao, G. V. Ramana / Srichand, J. (1996): "Word boundary detection using pitch variations", In ICSLP-1996, 813-816.