The sound of silence.

airbase... [1630Kb]
Brister A
ventilation system, duct, noise pollution
Year:
1993
Bibliographic info:
UK, Building Services, July 1993, pp 43-44

As active noise control systems begin to penetrate the market place, are the days of the passive attenuator numbered? Andrew Brister looks at the likely future for anti-noise.

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