Time delay estimation in a reverberant environment by low rate sampling of impulsive acoustic sources

Abstract
This paper presents a new method of time delay estimation (TDE) using low sample rates of an impulsive acoustic source in a room environment. The proposed method finds the time delay from the room impulse response (RIR) which makes it robust against room reverberations. The RIR is considered a sparse phenomenon and a recently proposed sparse signal reconstruction technique called orthogonal clustering (OC) is utilized for its estimation from the low rate sampled received signal. The arrival time of the direct path signal at a pair of microphones is identified from the estimated RIR and their difference yields the desired time delay. Low sampling rates reduce the hardware and computational complexity and decrease the communication between the microphones and the centralized location. The performance of the proposed technique is demonstrated by numerical simulations and experimental results. © 2012 IEEE.

Citation
Omer M, Quadeer AA, Sharawi MS, Al-Naffouri TY (2012) Time delay estimation in a reverberant environment by low rate sampling of impulsive acoustic sources. 2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA). Available: http://dx.doi.org/10.1109/isspa.2012.6310445.

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
2012 11th International Conference on Information Science, Signal Processing and their Applications (ISSPA)

Conference/Event Name
2012 11th International Conference on Information Science, Signal Processing and their Applications, ISSPA 2012

DOI
10.1109/isspa.2012.6310445

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