Underdetermined source separation with simultaneous DOA estimation without initial value dependency

Tomoya Tachikawa, Kohei Yatabe, Yasuhiro Oikawa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    In this paper, a sparsity-based method for solving an underde-termind source separation problem is proposed. The proposed method is formulated as a convex optimization problem with two kinds of sparsity priors: sparsity in time-frequency domain and direction-of-arrival (DOA). These priors enable simultaneous estimation of DOA and sound sources, while the estimation result does not depend on an initialization method thanks to the convexity. Experiments using 4 sound sources recorded by 2 microphones confirmed that every random initial value in the proposed method resulted in the same performance which was better than the conventional methods.

    Original languageEnglish
    Title of host publication16th International Workshop on Acoustic Signal Enhancement, IWAENC 2018 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages161-165
    Number of pages5
    ISBN (Electronic)9781538681510
    DOIs
    Publication statusPublished - 2018 Nov 2
    Event16th International Workshop on Acoustic Signal Enhancement, IWAENC 2018 - Tokyo, Japan
    Duration: 2018 Sep 172018 Sep 20

    Other

    Other16th International Workshop on Acoustic Signal Enhancement, IWAENC 2018
    CountryJapan
    CityTokyo
    Period18/9/1718/9/20

    Keywords

    • 1-norm
    • 2-norm
    • Convex optimization
    • Disjointness
    • Group sparsity
    • L1
    • L2
    • Primal-dual splitting

    ASJC Scopus subject areas

    • Signal Processing
    • Acoustics and Ultrasonics

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  • Cite this

    Tachikawa, T., Yatabe, K., & Oikawa, Y. (2018). Underdetermined source separation with simultaneous DOA estimation without initial value dependency. In 16th International Workshop on Acoustic Signal Enhancement, IWAENC 2018 - Proceedings (pp. 161-165). [8521359] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWAENC.2018.8521359