A permanent large scale audio system for sound reinforcement and zoned announcements was installed in the 760 Hectare (1900 acre) Sydney Olympic Park precinct, the site of 14 major venues for 2000 Olympic Games events. During the Games, up to 450,000 people were present on the site at any time. Around the site, 550 distributed loudspeakers are driven from 56 adjacent dual channel amplifiers. Networked digital audio directly accesses loudspeaker amplifiers, carried across the site on both optic-fiber and copper data links. The paper discusses benefits of this approach, including flexible signal routing, distributed signal processing, direct to network digital message playout and centralized or local control alternatives.
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https://aes2.org/publications/elibrary-page/?id=9962
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