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A Compact Spherical 170 Loudspeaker Array for Outdoors

Abstract Compact spherical loudspeaker arrays are useful devices to produce focused beams of sounds with controllable radiation direction and hereby offer interesting means of expression in electroacoustic music, especially for spatialized sound. As alternative to the elaborate and expensive designs of the 20-channel IKO, small-scale models such as the 393 loudspeaker array (15 channels) or the 170 loudspeaker array (8 channels) were designed and built for small spaces, rehearsals, or to be affordable private instruments. The utilization of loudspeaker arrays needs not to be restricted to indoor performances, however, outdoor applications may require weatherproof designs, regarding sunlight, moisture, and rain in particular with installations that are supposed to be operating for several days. In this project such a weatherproof design will be conceptualized, built and tested on the basis of the existing 170 design. Moreover, the extension by one bass loudspeaker will be simulated to find out whether a 171 design is superior in terms of maintaining a horizontal focus.
Authors Brands, B.
Supervisors Zotter, F.
Year of Publication 2022
Publication Type Audio Engineering project
Publication URL https://phaidra.kug.ac.at/o:127866
Note Spatial Audio
Status completed
Keywords Ambisonics,Hardware,compact spherical loudspeaker arrays,spherical harmonics,Spatial Audio