... acoustic wave absorption acoustic wave propagation acoustic wave transmission discs (structures) elasticity finite element analysis noise abatement piezoelectric actuators plates (structures) porosity sandwich structures structural acoustics structural panels vibrations 24 02 2011...

... performance during live scans. The controller produced an overall reduction of 10.6 dBA across the full audible spectrum. 04 10 2010 01 06 2011 09 01 2012 09 01 2012 acoustic noise acoustic transducers acoustic wave absorption active noise control biomedical equipment...

... 24 05 2011 01 06 2011 28 12 2011 28 12 2011 acoustic impedance acoustic wave absorption boundary-elements methods finite element analysis shells (structures) structural acoustics underwater sound vibration control vibrations FRF coupled FE/BE method...

... and Wave Based Models for Mass Inclusions in Poro-Elastic Layers ,” Proc. ICSV 14 , Cairns , Australia . 27 04 2010 21 07 2011 25 07 2011 28 11 2011 28 11 2011 acoustic wave absorption acoustic wave transmission damping elastic constants inclusions noise...

... acoustic wave absorption automotive components damping exhaust systems silencers 18 01 2010 31 07 2010 25 03 2011 25 03 2011 2011 American Society of Mechanical Engineers ...

... reduction performance of the void decoupling layer. 21 07 2009 07 06 2010 16 09 2010 16 09 2010 acoustic impedance acoustic noise acoustic wave absorption acoustic wave transmission noise abatement plates (structures) structural acoustics underwater acoustic propagation...

..., the two-node and eight-DOF is adopted in this example. Reference 15 discussed this example with other methods, and gave the parameters of the damping material, which are listed in Table 5 . 30 10 2005 23 01 2007 vibrations acoustic wave absorption noise abatement viscoelasticity...

... simulations. acoustic porous materials fibrous material rigid frame finite element compression acoustic materials porous materials acoustic wave absorption acoustic wave propagation acoustic wave transmission finite element analysis architectural acoustics vibrations noise abatement...

... on rate of attenuation for circular duct with a = 0.10 m , c = 0.12 m , and M = 0 14 05 2004 20 07 2006 structural acoustics pipe flow acoustic wave propagation acoustic wave absorption acoustic wave velocity acoustic field Circular...

... are accommodated through admittance relation. Results show that impact of absorbent layers is frequency dependent while modifying structural damping has a better prospect. structural acoustics acoustic wave absorption laminates boundary-elements methods finite element analysis vibrations damping...

... . Physikalisch-Technische Bundesanstalt , Project 1.401: simulation of room acoustics, http://www.ptb.de/en/org/l/l7/173/roundrob2_l.htm 13 10 2004 09 10 2005 architectural acoustics reverberation acoustic wave reflection acoustic field acoustic wave absorption acoustic intensity...

... that the semi-active MR TVA offers larger performance gains as the structure mass increases. 08 04 2004 24 05 2005 vibration control vibrations structural acoustics acoustic wave absorption robust control control system analysis damping A vibration absorber is a vibratory...

... , pp. 429 – 436 . 28 04 2003 03 05 2005 active noise control acoustic wave absorption acoustic impedance acoustic resonators transfer functions robust control closed loop systems acoustic intensity acoustic field self-adjusting systems control...

... results in Ref. 4 (Fig. 13 (b)). Acceptable agreement can be confirmed. acoustic wave absorption architectural acoustics Galerkin method variational techniques linear algebra In terms of the cylindrical coordinates, the wave equation ( 3 ) and the boundary condition (6) are expressed...

...; Revised June 2002. Associate Editor: R. L. Clark. 01 Feb 2002 01 June 2002 06 01 2003 acoustic impedance state feedback piezoelectric actuators active noise control vibrations acoustic wave absorption aeroacoustics Throughout the operational lifetime of satellites...

... OF VIBRATION AND ACOUSTICS . Manuscript received August 2000; Revised April 2002. Associate Editor: R. L. Clark. 01 August 2000 01 April 2002 20 09 2002 damping vibrations acoustic wave absorption optimisation vibration isolation acoustic field tuning acoustic resonance...

... 2002 12 06 2002 acoustic wave absorption acoustic wave reflection porous materials surface acoustic waves differential equations acoustic materials acoustic impedance architectural acoustics The use of corrugated or ridgy absorbent surfaces usually presents two major...

... that the system achieved 17.2 dB maximal attenuation in the frequency band 300∼600 Hz. Physical insights and design considerations in implementation phase are also discussed in the paper. feedforward acoustic wave absorption active noise control acoustic signal processing FIR filters IIR filters...

... to track tonal disturbances of varying frequency and to maintain attenuation. resonators acoustic wave absorption noise abatement structural acoustics 01 Aug 1999 01 Aug 2000 Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL...

... in the area of feedback and hybrid control of noise can be found in 4 5 6 . active noise control feedback acoustic wave absorption 01 Oct 1998 01 May 2000 Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS...