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Enhanced diffuse field model for ad hoc microphone array calibration
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DOI：10.1016/j.sigpro.2014.02.012.png)
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Abstract
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In this paper, we investigate the diffuse field coherence model for microphone array pairwise distance estimation. We study the fundamental constraints and assumptions underlying this approach and propose evaluation methodologies to measure the adequacy of diffuseness for microphone array calibration. In addition, an enhanced schemebased on coherence averaging and histogramming, is presented to improve the robustness and performance of the pairwise distance estimation approach. The proposed theories and algorithms are evaluated on simulated and real data recordings for calibration of microphone array geometry in an ad hoc set-up. (C) 2014 Elsevier B.V. All rights reserved.
Keywords:
Ad hoc microphone array calibration
Diffuse field coherence model
Adequacy of diffuseness
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