Active control of sound transmission through a double panel partition

Sas, Paul; Bao, Chaoeng; Augusztinovicz, Fulop; Desmet, Wim

doi:10.1006/jsvi.1995.0102

Cited by 76 publications

(49 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The structure of a double glazed plate was often employed in ANC field. Two type of approaches were taken; one is 'cavity control' applying acoustic control sources in the air gap between the two plates (Sas et al, 1995;Jakob & Möser, 2003a, 2003bKaiser et al, 2003), and the other is 'panel control' applying vibration control sources on the radiating plate (Bao & Pan, 1997Pan, , 1998. In the cavity control approaches in which microphones and loudspeakers are usually used to sense and actuate sounds, there must be some large space to place them.…”

Section: Sound Selection Systemmentioning

confidence: 99%

Adaptive Signal Selection Control Based on Adaptive FF Control Scheme and Its Applications to Sound Selection Systems

Okumura¹,

Sano²

2011

Numerical Simulations of Physical and Engineering Processes

View full text Add to dashboard Cite

Section: Sound Selection Systemmentioning

confidence: 99%

Adaptive Signal Selection Control Based on Adaptive FF Control Scheme and Its Applications to Sound Selection Systems

Okumura¹,

Sano²

2011

Numerical Simulations of Physical and Engineering Processes

View full text Add to dashboard Cite

“…The latter is usually the acoustic pressure, which yields non-symmetrical mass and stiffness matrices, posing a disadvantage to FE solvers [3,4].…”

Section: Vibro-acoustic Modelingmentioning

confidence: 99%

A State-Space Modeling Approach for Active Structural Acoustic Control

Oliveira

Varoto

Sas

et al. 2009

Shock and Vibration

View full text Add to dashboard Cite

Abstract. The demands for improvement in sound quality and reduction of noise generated by vehicles are constantly increasing, as well as the penalties for space and weight of the control solutions. A promising approach to cope with this challenge is the use of active structural-acoustic control. Usually, the low frequency noise is transmitted into the vehicle's cabin through structural paths, which raises the necessity of dealing with vibro-acoustic models. This kind of models should allow the inclusion of sensors and actuators models, if accurate performance indexes are to be accessed. The challenge thus resides in deriving reasonable sized models that integrate structural, acoustic, electrical components and the controller algorithm. The advantages of adequate active control simulation strategies relies on the cost and time reduction in the development phase. Therefore, the aim of this paper is to present a methodology for simulating vibro-acoustic systems including this coupled model in a closed loop control simulation framework that also takes into account the interaction between the system and the control sensors/actuators. It is shown that neglecting the sensor/actuator dynamics can lead to inaccurate performance predictions.

show abstract

“…Extensive experimental study [5,6,26,34] has also been carried out and active control strategies [71][72][73][74] for noise reduction proposed.…”

Section: Introductionmentioning

confidence: 99%

Transmission of Sound Through Finite Multiple-Panel Partition

Xin

2014

Springer Tracts in Mechanical Engineering

View full text Add to dashboard Cite

This chapter is organized as three parts: in the first part, the vibroacoustic performance of a rectangular double-panel partition with enclosed air cavity and simply mounted on an infinite acoustic rigid baffle is investigated analytically. The sound velocity potential method rather than the commonly used cavity modal function method is employed, which possesses good expandability and has significant implications for further vibroacoustic investigations. The simply supported boundary condition is accounted for by using the method of modal function, and double Fourier series solutions are obtained to characterize the vibroacoustic behaviors of the structure. Results for sound transmission loss (STL), panel vibration level, and sound pressure level are presented to explore the physical mechanisms of sound energy penetration across the finite double-panel partition. Specifically, focus is placed upon the influence of several key system parameters on sound transmission, including the thickness of air cavity, structural dimensions, and the elevation angle and azimuth angle of the incidence sound. Further extensions of the sound velocity potential method to typical framed double-panel structures are also proposed.In the second part, the air-borne sound insulation performance of a rectangular double-panel partition clamp mounted on an infinite acoustic rigid baffle is investigated both analytically and experimentally, and compared with that of a simply supported one. With the clamped (or simply supported) boundary accounted for by using the method of modal function, a double series solution for the sound transmission loss (STL) of the structure is obtained by employing the weighted residual (Galerkin) method. Experimental measurements with Al double-panel partitions having air cavity are subsequently carried out to validate the theoretical model for both types of the boundary condition, and good overall agreement is achieved. A consistency check of the two different models (based separately on clamped modal function and simply supported modal function) is performed by

show abstract

Active control of sound transmission through a double panel partition

Cited by 76 publications

References 0 publications

Adaptive Signal Selection Control Based on Adaptive FF Control Scheme and Its Applications to Sound Selection Systems

Adaptive Signal Selection Control Based on Adaptive FF Control Scheme and Its Applications to Sound Selection Systems

A State-Space Modeling Approach for Active Structural Acoustic Control

Transmission of Sound Through Finite Multiple-Panel Partition

Contact Info

Product

Resources

About