Experimental study for control of sound transmission through double glazed window using optimally tuned Helmholtz resonators

Mao, Qibo; Pietrzko, Stanislaw

doi:10.1016/j.apacoust.2009.07.007

Cited by 42 publications

(24 citation statements)

References 13 publications

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“…In engineering practice, however, it is difficult to embed a complicated control circuit into a shallow gap from the implementation point of view. As an alternative, passive control using Helmholtz resonators (HRs) has been adopted extensively due to its low cost and no need for external power [16][17][18][19][20][21]. By properly arranging tuned HRs, the acoustical damping level inside the cavity between the double panels, i.e., air gap, can be increased, and consequently the noise attenuation is achieved [16,20].…”

Section: Introductionmentioning

confidence: 99%

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

2010

Applied Acoustics

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Section: Introductionmentioning

confidence: 99%

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

2010

Applied Acoustics

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“…Mason and Fahy 1 have analyzed transmitted sound field through an infinite spreading double-leaf partition under normal incidence, and confirmed by measuring the effects of Helmholtz resonators. Mao and Pietrzko 2,3,4 have analyzed transmitted sound field through double-leaf rectangular windows. Sugie, Yoshimura and Iwase 5,6,7 have measured and discussed effects of Helmholtz resonators as absorbing materials on sound insulation of double-leaf partition at low frequencies, and have studied optimization of construction of the resonators to recover less sound insulation caused by the mass-air-mass resonance.…”

Section: Introductionmentioning

confidence: 99%

Structures of resonators in a cavity for improving a sound insulation of a thin double-leaf panel

Nakanishi¹

2013

Proceedings of Meetings on Acoustics

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The specific acoustic problem of a double-leaf panel is a less sound insulation caused by a mass-air-mass resonance. For improving the sound insulation, many studies have suggested Helmholtz resonators in the cavity, which are tuned at the resonant frequency. They have measured and analyzed this problem of double-walls spaced with 100 mm thickness of air gap. They have suggested that the resonators improve the sound insulation to the resonant transmission, and discussed its optimization for a gain by the resonators and structures set in the cavity. But it is unclear that those results can apply to sound insulation by a double grassing with 5 mm thickness of air gap, which is often seen even as a thermal insulated window, and whose air gap is quite thinner than that of the walls. Then, this study measured effects of various resonators in the cavity for improving the sound insulation of thin double-leaf panels, and discusses effects of structures and perforation ratio to the sound insulation.

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“…The HR is one of the most common devices for passive control of noise at low frequencies. Mao and Pietrzko [13] developed a fully coupled system of structural-acoustic-HRs for double-wall structures by the modal coupling method. The simulations were confirmed by their experimental work [14].…”

Section: Introductionmentioning

confidence: 99%

“…Mao and Pietrzko [13] developed a fully coupled system of structural-acoustic-HRs for double-wall structures by the modal coupling method. The simulations were confirmed by their experimental work [14]. With optimally tuned HRs, it is possible to achieve sound reduction of up to 18 dB at certain low frequencies (to 100 Hz).…”

Section: Introductionmentioning

confidence: 99%

Application of piezoelectric macro-fiber-composite actuators for the suppression of noise transmission through curved glass plates

Nováková

Mokrý

2011

2011 International Symposium on Applications of Ferroelectrics (ISAF/PFM) and 2011 International Symposium on Piezoresponse For

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An investigation on the application of the piezoelectric Macro-Fiber-Composite (MFC) actuators for the suppression of the noise transmission through the curved glass plates is presented. It is known that when the incident sound wave in the air hits the glass plate or curved plate or shell, part of the acoustic wave is reflected, which makes the plate vibrate, and part of the wave is transmitted. It is easy to understand that the higher the flexural rigidity of the glass plate the bigger part of the acoustic sound wave is reflected than transmitted. This simple physical phenomenon can be profitably used for the suppression of the noise transmission through glass plates. The noise suppression effect is achieved using the MFC actuator, which is attached to the vibrating glass plate. When the piezoelectric MFC actuator is shunted by the active electronic circuit, which has a negative capacitance, it is possible to greatly suppress the vibration of the glass plate and also the noise transmission through the glass plate. The sound shielding efficiency of the glass plate is measured by the acoustic transmission loss (TL), which is expresed in decibel scale. If the amplitude of the window vibrations decreases, the value of TL increases. The effect of the glass plate geometry, and the electrical properties of the active shunt circuit on the enhancement of TL is analyzed using Finite Element Method numerical simulations. The comparison of the results of numerical simulations with acoustic measurements is presented. The possibility of the use of this method for the suppression of the noise transmission through the glass window plates is discussed.

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Experimental study for control of sound transmission through double glazed window using optimally tuned Helmholtz resonators

Cited by 42 publications

References 13 publications

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

Noise control of an acoustic enclosure covered by a double-wall structure with shallow gap: Design of resonator-like cavities

Structures of resonators in a cavity for improving a sound insulation of a thin double-leaf panel

Application of piezoelectric macro-fiber-composite actuators for the suppression of noise transmission through curved glass plates

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