...Jie Duan; Mingfeng Li; Teik C. Lim; Ming-Ran Lee; Ming-Te Cheng; Wayne Vanhaaften; Takeshi Abe 1 Corresponding author. Fig. 6 Comparison of active noise control results between EE virtual secondary path algorithm and the EE-CE virtual secondary path algorithm: ( a ) error 1; ( b ) error...

... have been proposed to reduce noise exposure with limited success. This work is directed at the application of an active noise control system which generates a secondary sound signal fed into a set of headphones that could be worn by the patient. To this end, prior studies have been conducted in a sound...

... of secondary sources without considering error transducers, or selecting the best positions of secondary sources and error transducers of an initial set of candidate locations for these elements. The strategy presented here for tonal global active noise control of steady states comprises two steps; the first...

... emission testing active noise control machine bearings statistics acoustic emission condition monitoring denoising DWT SANC spectral subtraction rolling bearing Acoustic emission (AE) results from the release of energy in the form of transient elastic waves in the material ( 1...

...Tom C. Waite; Qingze Zou; Atul Kelkar In this article, an inversion-based feedforward control approach to achieve broadband active-noise control is investigated. Broadband active-noise control is needed in many areas, from heating, ventilation and air conditioning (HVAC) ducts to aircraft cabins...

...Yesim Sabah; Masaaki Okuma; Minoru Okubo The purpose of this paper is to investigate a modified adaptive step-size algorithm and implement an active noise control (ANC) system. It is well known that there is a tradeoff between steady state error and convergence rate depending on the step size...

...Mingsian R. Bai; Jianliang Lin This paper seeks to enhance the quality of spatial sound reproduction by integrating two advanced signal processing technologies, active noise control (ANC) and three-dimensional (3D) audio, to a headset. The ANC module of the headset is designed based...

... ). In this paper, the main aim is to explore the mechanism of PVDF actuator and its feasibility of application in active noise control (ANC). So a simple cost function named squared pressure is chosen as the control aim 28 ∣ P ( r e ) ∣ 2 = P ( r e ) * P ( r e...

... , G. , and Neise , W. , 1982 , “ The Use of Resonators to Silence Centrifugal Blowers ,” J. Sound Vib. 0022-460X 10.1016/0022-460X(82)90539-9 , 82 , pp. 17 – 27 . Kostek , T. M. , 1997 , “ Combining Adaptive-Passive and Fully Active Noise Control in Ducts ,” ASME IMECE 1997...

...Jesse B. Bisnette; Adam K. Smith; Jeffrey S. Vipperman; Daniel D. Budny An active noise control device called active noise absorber or ANA, which is based upon damped, resonant filters is developed and demonstrated. It is similar to structural positive position feedback (PPF) control, with two...

... of the complementary control mechanisms. 23 July 2002 08 October 2004 18 05 2005 vibrations structural acoustics acoustic noise vibration control dynamic response finite element analysis composite materials buckling damping active noise control acoustic wave transmission Shape Memory...

.... 9 , demonstrate significant damping of the resonant peaks. This was achieved by an active resonator with a depth of l = 30 cm that is less than the depths of most passive anechoic wedges. 28 04 2003 03 05 2005 active noise control...

.... Ginsberg. 01 September 2001 01 Dec 2003 30 07 2004 vibration measurement vibrations sensors organic compounds beams (structures) displacement measurement design active noise control attenuators The focus of this research is in part to that of a larger study aimed...

... and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS . Manuscript received April 2001; Revised August 2002. Associate Editor: R. Ohayon. 01 April 2001 01 August 2002 06 01 2003 active noise control feedforward least mean squares methods comb filters acoustic...

...; 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...

... on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS . Manuscript received Aug. 2000; Revised Aug. 2001; Associate Editor: R. L. Clark. 01 Aug 2000 01 Aug 2001 active noise control robust control feedback actuators genetic algorithms According...

... capability and a large surface area (for example 1.5 m×1.8 m) which is made by combining nine standard EMFi panel loudspeakers 10 11 12 . The EMFi actuator has already been used successfully in limited active noise control applications. It has been shown that this kind of planar acoustic source...

...Zhang Qizhi; Jia Yongle The nonlinear active noise control (ANC) is studied. The nonlinear ANC system is approximated by an equivalent model composed of a simple linear sub-model plus a nonlinear sub-model. Feedforward neural networks are selected to approximate the nonlinear sub-model. An adaptive...

... can potentially reduce structural vibration 1 2 3 4 5 6 7 8 9 10 11 12 . damping piezoceramics piezoelectric devices vibration control active noise control structural acoustics 01 January 2000 01 May 2001 Contributed by the Technical Committee on Vibration...

... of the FXLMS algorithm has been developed. Computer simulations were carried out to investigate the performance of acoustical feedback and feedback neutralization as well as the effect of boundary conditions on the performance of active noise control (ANC) systems. Comparisons of the simulation results were...