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Intentional Voice Command Detection for Trigger-Free Speech Interface

Yasunari OBUCHI, Takashi SUMIYOSHI

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Summary :

In this paper we introduce a new framework of audio processing, which is essential to achieve a trigger-free speech interface for home appliances. If the speech interface works continually in real environments, it must extract occasional voice commands and reject everything else. It is extremely important to reduce the number of false alarms because the number of irrelevant inputs is much larger than the number of voice commands even for heavy users of appliances. The framework, called Intentional Voice Command Detection, is based on voice activity detection, but enhanced by various speech/audio processing techniques such as emotion recognition. The effectiveness of the proposed framework is evaluated using a newly-collected large-scale corpus. The advantages of combining various features were tested and confirmed, and the simple LDA-based classifier demonstrated acceptable performance. The effectiveness of various methods of user adaptation is also discussed.

Publication
IEICE TRANSACTIONS on Information Vol.E93-D No.9 pp.2440-2450
Publication Date
2010/09/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E93.D.2440
Type of Manuscript
Special Section PAPER (Special Section on Processing Natural Speech Variability for Improved Verbal Human-Computer Interaction)
Category
Robust Speech Recognition

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