The design of ambisonic decoders for the itu 5.1 layout with even performance characteristics

David Moore, Jonathan Wakefield

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

    8 Citations (Scopus)


    All previously published Ambisonic decoders for irregular loudspeaker layouts have localisation performance which varies significantly by angle around the listener. This contrasts with decoders designed for evenly spaced arrangements of loudspeakers where performance characteristics are isotropic. Furthermore even localisation performance around the listener is desirable for a number of application areas of 5.1 surround sound. New decoder design criteria are presented which aim to reduce this variation in localisation performance. These criteria are added to a multiobjective fitness function, based on auditory localisation theory, which guides a heuristic search algorithm to derive decoder parameter sets for the ITU 5.1 layout. The derived decoders exhibit a significant improvement in localisation performance variation by angle around the 360º sound stage.
    Original languageEnglish
    Title of host publication124th Audio Engineering Society Convention 2008
    PublisherCurran Associates Inc
    Number of pages10
    ISBN (Print)9781605602950
    Publication statusPublished - 1 May 2008


    • audio engineering
    • ambisonics
    • spatial sound
    • ITU 5.1


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