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Audio Network Based Massive Multichannel Loudspeaker System for Flexible Use in Spatial Audio Research

"One of the main research areas in the field of spatial audio is sound field synthesis. These techniques use arrays of loudspeakers to (re)create the sound field of a virtual source in a desired listening area. They are often termed as massive multichannel systems, because of the number of loudspeakers in practical applications is quite large. Such systems require an individual computed signal for each loudspeaker. In this paper we present a massive multichannel system consisting of 640 loudspeakers. The system is based on an audio network distributing the audio signals to a grid of amplifiers. It will be shown that the use of the audio network allows control of error-free operation for the entire system. The paper starts with a discussion about the concept and design-related decisions for such a system. After that, the realization will be described in detail. The features of the system are illustrated with an example application."

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