Robust Speech/Non-Speech Classification in Heterogeneous Multimedia Content

Huijbregts, Marijn and Jong de, Franciska (2011) Robust Speech/Non-Speech Classification in Heterogeneous Multimedia Content. Speech Communication, 53 (2). pp. 143-153. ISSN 0167-6393

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Abstract:	In this paper we present a speech/non-speech classification method that allows high quality classification without the need to know in advance what kinds of audible non-speech events are present in an audio recording and that does not require a single parameter to be tuned on in-domain data. Because no parameter tuning is needed and no training data is required to train models for specific sounds, the classifier is able to process a wide range of audio types with varying conditions and thereby contributes to the development of a more robust automatic speech recognition framework. Our speech/non-speech classification system does not attempt to classify all audible non-speech in a single run. Instead, first a bootstrap speech/silence classification is obtained using a standard speech/non-speech classifier. Next, models for speech, silence and audible non-speech are trained on the target audio using the bootstrap classification. The experiments show that the performance of the proposed system is 83% and 44% (relative) better than that of a common broadcast news speech/non-speech classifier when applied to a collection of meetings recorded with table-top microphones and a collection of Dutch television broadcasts used for TRECVID 2007.
Item Type:	Article
Copyright:	© 2010 Elsevier
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Human Media Interaction (HMI)
Link to this item:	http://purl.utwente.nl/publications/75066
Official URL:	http://dx.doi.org/10.1016/j.specom.2010.08.008
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