Extraction of exterior field from a mixed sound field for 2D height-invariant sound propagation

Abdullah Fahim, Prasanga Samarasinghe, Thushara D. Abhayapala

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

    8 Citations (Scopus)

    Abstract

    Any sound field caused by one or more sound sources takes the form of an interior, exterior or a mixed sound field based on the source locations. The recording and reproduction of interior or exterior sound fields in terms of harmonic decomposition has been extensively studied in the literature, however the challenging task of separating them in a mixed field remains largely unexplored. But in nature, the interior and exterior sound fields often co-exist, hence their isolation can be very useful in many acoustic processes. In this paper, we discuss a method to extract the exterior field from a mixed sound field for 2D height-invariant sound propagation. Such an extraction method can be employed to record a sound field in a noisy or interfered room or to perform dereverberation in a reverberant room where the sound fields due to the source signal and its reflections superimpose each other. We demonstrate two practical uses of the proposed method in the forms of (i) an exterior sound field recording in a mixed wave field and (ii) speech dereverberation in a simulated reverberant room.

    Original languageEnglish
    Title of host publication2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781509020072
    DOIs
    Publication statusPublished - 19 Oct 2016
    Event15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016 - Xi'an, China
    Duration: 13 Sept 201616 Sept 2016

    Publication series

    Name2016 International Workshop on Acoustic Signal Enhancement, IWAENC 2016

    Conference

    Conference15th International Workshop on Acoustic Signal Enhancement, IWAENC 2016
    Country/TerritoryChina
    CityXi'an
    Period13/09/1616/09/16

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