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Wearable Audio Monitoring: Content-Based Processing Methodology and Implementation

Lookup NU author(s): Dr Bin Gao, Dr Wai Lok Woo


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Developing audio processing tools for extracting social-audio features are just as important as conscious content for determining human behavior. Psychologists speculate these features may have evolved as a way to establish hierarchy and group cohesion because they function as a subconscious discussion about relationships, resources, risks, and rewards. In this paper, we present the design, implementation, and deployment of a wearable computing platform capable of automatically extracting and analyzing social-audio signals. Unlike conventional research that concentrates on data which have been recorded under constrained conditions, our data were recorded in completely natural and unpredictable situations. In particular, we benchmarked a set of integrated algorithms (sound speech detection and classification, sound level meter calculation, voice and nonvoice segmentation, speaker segmentation, and prediction) to obtain speech and environmental sound social-audio signals using an in-house built wearable device. In addition, we derive a novel method that incorporates the recently published audio feature extraction technique based on power normalized cepstral coefficient and gap statistics for speaker segmentation and prediction. The performance of the proposed integrated platform is robust to natural and unpredictable situations. Experiments show that the method has successfully segmented natural speech with 89.6% accuracy.

Publication metadata

Author(s): Gao B, Woo WL

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Human-Machine Systems

Year: 2014

Volume: 44

Issue: 2

Pages: 222-233

Print publication date: 01/04/2014

ISSN (print): 2168-2291

ISSN (electronic): 2168-2305

Publisher: IEEE


DOI: 10.1109/THMS.2014.2300698


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