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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    "description": "<p>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.\u00a0</p>", 
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    "title": "DOA ESTIMATION WITH HISTOGRAM ANALYSIS OF SPATIALLY CONSTRAINED ACTIVE INTENSITY VECTORS", 
    "notes": "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 Sk\u0142odowska- Curie grant agreement No 644283", 
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        "title": "Hands-free Voice-enabled Interface to Web Applications for Smart Home Environments", 
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    "keywords": [
      "direction of arrival, higher order active intensity vector, multiple sound sources, microphone arrays"
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    "publication_date": "2017-03-09", 
    "creators": [
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        "affiliation": "Aalto University, Department of Signal Processing and Acoustics, Espoo, FI-00076, Finland", 
        "name": "Symeon Delikaris-Manias"
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        "affiliation": "FORTH-ICS, Heraklion, Crete, GR-70013, Greece", 
        "name": "Despoina Pavlidi"
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      {
        "affiliation": "FORTH-ICS, Heraklion, Crete, GR-70013, Greece", 
        "name": "Athanasios Mouchtaris"
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      {
        "affiliation": "Aalto University, Department of Signal Processing and Acoustics, Espoo, FI-00076, Finland", 
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