On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays

F. Jacob, R. Haeb-Umbach, in: 12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.

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This contribution investigates Direction of Arrival (DoA) estimation using linearly arranged microphone arrays. We are going to develop a model for the DoA estimation error in a reverberant scenario and show the existence of a bias, that is a consequence of the linear arrangement and limited field of view (FoV) bias: First, the limited FoV leading to a clipping of the measurements, and, second, the angular distribution of the signal energy of the reflections being non-uniform. Since both issues are a consequence of the linear arrangement of the sensors, the bias arises largely independent of the kind of DoA estimator. The experimental evaluation demonstrates the existence of the bias for a selected number of DoA estimation methods and proves that the prediction from the developed theoretical model matches the simulation results.
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12. ITG Fachtagung Sprachkommunikation (ITG 2016)
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Jacob F, Haeb-Umbach R. On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays. In: 12. ITG Fachtagung Sprachkommunikation (ITG 2016). ; 2016.
Jacob, F., & Haeb-Umbach, R. (2016). On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays. In 12. ITG Fachtagung Sprachkommunikation (ITG 2016).
@inproceedings{Jacob_Haeb-Umbach_2016, title={On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays}, booktitle={12. ITG Fachtagung Sprachkommunikation (ITG 2016)}, author={Jacob, Florian and Haeb-Umbach, Reinhold}, year={2016} }
Jacob, Florian, and Reinhold Haeb-Umbach. “On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays.” In 12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
F. Jacob and R. Haeb-Umbach, “On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays,” in 12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.
Jacob, Florian, and Reinhold Haeb-Umbach. “On the Bias of Direction of Arrival Estimation Using Linear Microphone Arrays.” 12. ITG Fachtagung Sprachkommunikation (ITG 2016), 2016.

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