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Siren Issues in Cincinnati/Hamilton County

Apr 28, 2010 3:12 pm

re: re: Siren Issues in Cincinnati/Hamilton County

Richard Weisenberger

My units run off available power or could have a backup generator or battery backup. As whistles respond instantly to changes in pressure, they can be modulated via a tremulant (an industrial strength version of the tremulants on pipe organs) to produce steady tones or warbling sounds.

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