Robust Time-Delay Estimation in Highly Adverse Acoustic Environments

Simon Doclo, Marc Moonen

To appear at Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA01), Mohonk Mountain Resort, NY, 21-24 October 2001


This paper describes an algorithm for robust time-delay estimation (TDE) in situations where a large amount of additive noise and reverberation is present. In [1] an adaptive eigenvalue decomposition algorithm has been developed for TDE between two microphones in highly reverberant acoustic environments. In this paper we extend this algorithm to highly noisy and reverberant environments, by using a generalized eigenvalue decomposition or by prewhitening the noisy microphone signals. It is shown that time-delays can be robustly estimated for SNRs down to -5 dB.

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