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Spatial transformations for the alteration of ambisonic recordings

Authors Kronlachner, M.
Year 2014
Thesis Type Master's thesis
Topic Spatial Audio
Keywords signal processing, Ambisonics, audio reproduction
Abstract The production and reproduction of sound scenes in the Ambisonic domain offers flexibility regarding the loudspeaker placement around the listening area. Correct decoding should result in a spatial audio perspective that is independent of the loudspeaker configuration. In case a modification of this perspective is needed, or directional alterations of the amplitude, applying such transformations in the Ambisonic domain is more challenging than directly modifying the production objects or loudspeaker placement. Nevertheless, for closing an important gap in flexibility and consistency, making available such algorithms in the Ambisonic domain is beneficial and their development is presented in this work. Most publications are restricted to modifications of first-order Ambisonics. One publication even claims that a dominance transform only works for first order. Nevertheless, this thesis takes the existing approaches, extends them, and makes them available to a broader audience.
Supervisors Zotter, F.