Sound reinforcement for large venues is a challenging task. Up to now most of the systems and concepts are focused on a more or less stereophonic reproduction. Beside these concepts a promising technology exists, which enables a spatial sound reinforcement for larger audience. Spatial sound reinforcement is an important aspect especially in high quality applications like opera houses and venues for classical music. This paper presents an innovative system and multi-user interface concept for dynamic automation and interactive control of sound source position and other properties for variable sound reproduction systems in live sound reinforcement applications. The system has been designed in close cooperation with experts in sound reinforcement for opera houses. Beside a detailed view on the practical realisation and audio processing in such a system the developed user interfaces are described.
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