active sound attenuator
McGraw-Hill Dictionary of Architecture & Construction:
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active sound attenuator
A special type of sound attenuator that incorporates a sound source which generates sound waves intended to cancel some of the noise generated by the fans in an HVAC system.
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McGraw-Hill Dictionary of Architecture & Construction
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.
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