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Truong, K.P. and Poppe, R.W. and Heylen, D.K.J.
(2010)
A rule-based backchannel prediction model using pitch and pause information.
In: Proceedings of Interspeech 2010, 26-30 September 2010, Makuhari, Chiba, Japan.
pp. 3058-3061.
International Speech Communication Association (ISCA).
ISSN 1990-9772
Full text available as:
 AbstractWe manually designed rules for a backchannel (BC) prediction model based on pitch and pause information. In short, the model predicts a BC when there is a pause of a certain length that is preceded by a falling or rising pitch. This model was validated against the Dutch IFADV Corpus in a corpus-based evaluation method. The results showed that our model performs slightly better than another well-known rule-based BC prediction model that uses only pitch information. We observed that the length of a pause preceding a BC is one of the important features in this model, next to the duration of the pitch slope at the end of an utterance. Further, we discuss implications of a corpus-based approach to BC prediction evaluation.
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