Acoustic beamforming in front of a reflective plane

Nikolaos Stefanakis, Symeon Delikaris-Manias, Athanasios Mouchtaris

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    2 Citations (Scopus)
    263 Downloads (Pure)

    Abstract

    In this paper, we consider the problem of beamforming with a planar microphone array placed in front of a wall of the room, so that the microphone array plane is perpendicular to that of the wall. While this situation is very likely to occur in a real life problem, the reflections introduced by the adjacent wall can be the cause of a serious mismatch between the actual acoustic paths and the traditionally employed free-field propagation model. We present an adaptation from the free-field to the so-called reflection-aware propagation model, that exploits an in-situ estimation of the complex and frequency-dependent wall reflectivity. Results presented in a real environment demonstrate that the proposed approach may bring significant improvements to the beamforming process compared to the free-field propagation model, as well as compared to other reflection-aware models that have been recently proposed.

    Original languageEnglish
    Title of host publication2018 26th European Signal Processing Conference, EUSIPCO 2018
    PublisherIEEE
    Pages26-30
    Number of pages5
    Volume2018-September
    ISBN (Electronic)978-9-0827-9701-5
    ISBN (Print)978-1-5386-3736-4
    DOIs
    Publication statusPublished - 29 Nov 2018
    MoE publication typeA4 Conference publication
    EventEuropean Signal Processing Conference - Rome, Italy
    Duration: 3 Sept 20187 Sept 2018
    Conference number: 26

    Publication series

    NameEuropean Signal Processing Conference
    ISSN (Print)2219-5491
    ISSN (Electronic)2076-1465

    Conference

    ConferenceEuropean Signal Processing Conference
    Abbreviated titleEUSIPCO
    Country/TerritoryItaly
    CityRome
    Period03/09/201807/09/2018

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