Conference paper Open Access

DOA ESTIMATION WITH HISTOGRAM ANALYSIS OF SPATIALLY CONSTRAINED ACTIVE INTENSITY VECTORS

Symeon Delikaris-Manias; Despoina Pavlidi; Athanasios Mouchtaris; Ville Pulkki


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    <subfield code="c">2017-03-09</subfield>
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    <subfield code="a">This research has been partly funded by the Aalto ELEC Doctoral School and the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska- Curie grant agreement No 644283</subfield>
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    <subfield code="a">&lt;p&gt;The active intensity vector (AIV) is a common descriptor of the sound field. In microphone array processing, AIV is commonly approximated with beamforming operations and uti- lized as a direction of arrival (DOA) estimator. However, in its original form, it provides inaccurate estimates in sound field conditions where coherent sound sources are simultane- ously active. In this work we utilize a higher order intensity- based DOA estimator on spatially-constrained regions (SCR) to overcome such limitations. We then apply 1-dimensional (1D) histogram processing on the noisy estimates for mul- tiple DOA estimation. The performance of the estimator is shown with a 7-channel microphone array, fitted on a rigid mobile-like device, in reverberant conditions and under dif- ferent signal-to-noise ratios. &lt;/p&gt;</subfield>
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    <subfield code="a">Despoina Pavlidi</subfield>
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    <subfield code="a">Athanasios Mouchtaris</subfield>
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    <subfield code="u">Aalto University, Department of Signal Processing and Acoustics, Espoo, FI-00076, Finland</subfield>
    <subfield code="a">Ville Pulkki</subfield>
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    <subfield code="u">Aalto University, Department of Signal Processing and Acoustics, Espoo, FI-00076, Finland</subfield>
    <subfield code="a">Symeon Delikaris-Manias</subfield>
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    <subfield code="a">direction of arrival, higher order active intensity vector, multiple sound sources, microphone arrays</subfield>
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    <subfield code="a">10.1109/ICASSP.2017.7952211</subfield>
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