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The Quiet Office - Noise Abatement in Office Buildings by Means of Smart Structures

: Bein, Thilo; Heuss, Oliver; Klaus, Tim Bastian; Bös, Joachim; Thyes, Christian


Journal of the Acoustical Society of America : JASA 131 (2012), No.4, Nr.3509
ISSN: 0001-4966
ISSN: 1520-8524
Acoustics Conference <2012, Hong Kong>
Fraunhofer LBF ()
smart structures; adaptronic

Noise is a serious form of environmental pollution believed to affect the lives of some 100 million European citizens. The cost of the associated damage is estimated at more than ten billion euro per year. Noise leads to serious health problems, limits the capability to learn and effects the occupant comfort and performance in buildings. In this context, advanced noise abatement concepts are being developed in the demonstration project “Quiet Office” within the LOEWE-Center AdRIA (Adaptronics – Research, Innovation, Application), a large interdisciplinary research project funded by the German federal state of Hessia. As underlying principle for noise reduction concepts, Active Structural Acoustic Control (ASAC) is primarily being considered. Applying ASAC concepts, the noise radiation is controlled either by controlling the structural vibration of the radiating structure or by controlling the structure borne sound path. This paper will present the most recent concepts and results from the “Quiet Office”. Starting from more generic concepts, concepts specifically designed for office applications including smart windows will be discussed. Examples presented will include distributed absorbers, shunt technologies with piezoelectric ceramics, smart Helmholtz resonators and fully active noise and vibration control.