NDLI: Real-Time Implementation of a Particle Filter with Integrated Voice Activity Detector for Acoustic Speaker Tracking

Content Provider	IEEE Xplore Digital Library
Author	Johansson, A.M. Lehmann, E.A. Nordholm, S.
Copyright Year	2006
Description	Author affiliation: Western Australian Telecommun. Res. Inst., Perth, WA (Johansson, A.M.)
Abstract	In noisy and reverberant environments, the problem of acoustic source localisation and tracking (ASLT) using an array of microphones presents a number of challenging difficulties. One of the main issues when considering real-world situations involving human speakers is the temporally discontinuous nature of speech signals: the presence of silence gaps in the speech can easily misguide the tracking algorithm, even in practical environments with low to moderate noise and reverberation levels. This work focuses on a realtime implementation of the ASLT algorithm, which circumvents this problem by integrating measurements from a voice activity detector (VAD) within the tracking algorithm framework. The algorithm is here optimized for low computational complexity, and is implemented on a PC based real-time system. The resulting computational load is calculated and is presented along with real measurements of the true execution speed for the considered algorithm implementation. The results show that the algorithm is suitable for implementation in currently existing low-power embedded systems
Starting Page	1004
Ending Page	1007
File Size	140847
Page Count	4
File Format	PDF
ISBN	1424403871
DOI	10.1109/APCCAS.2006.342257
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-04
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Particle filters Acoustic signal detection Detectors Loudspeakers Particle tracking Working environment noise Microphone arrays Speech enhancement Acoustic noise Acoustic arrays
Content Type	Text
Resource Type	Article

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