PUBLIC ADDRESS SYSTEMS
PUBLIC ADDRESSING/SPEECH REINFORCEMENTS
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Hunter's comment
This is an electronic sound amplification and distribution system that comprises of a mic, amplifier & speakers.
They are essentially used for addressing a large public for announcements of movements at large and at noisy airports and railway stations or at a sports stadiums, bust terminals, auditoriums, buildings, town halls, receptions, hotels, cafes, restaurants, hospitals, theaters & cinemas, amusements parks, banquet lawns, discotheques, convention centres etc.
Link
http://techtree-inc.com/public#
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What are bust centres? Not innovative tech either.
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