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Line-source loudspeaker arrays for immersive sound reinforcement

Authors Gölles, L.
Year 2020
Thesis Type Master's thesis
Topic Spatial Audio
Keywords acoustics, Ambisonics, directivity, Spatial Audio, audio reproduction
Abstract The properties of sound systems for three-dimensional sound material are already relatively well understood, as long as the size of the audience remains manageable, i.e. up to about 200 people. For example, the sweet area size for Ambisonic playback systems as usable audience area was examined for direct sound and reverberation. However, such sound systems are already reaching their limits. The sound propagation over longer distances are hardly taken into account by the know studies. According to the current state of the art, sound transmission over large distances is mostly solved by the use of a progressively curved line-source loudspeaker array. This thesis deals with the realization of optimally curved line-source loudspeaker arrays for immersive sound reinforcement in order to guarantee an optimally enveloping/immersive soundscape for the majority of the audience. To this end, this work elaborates a theory of optimally curved line source arrays at different heights and investigates the achievable sound pressure level contour depending on the distance, on the one end. On the other hand, the new theory is evaluated in concluding practical experiments.
Supervisors Zotter, F., Höldrich, R.