Active control of aircraft fly-over sound transmission through an open window

Pàmies, Teresa; Garbí, Jordi Romeu; Genescà, M.; Villamarín, Robert Arcos

doi:10.1016/j.apacoust.2014.02.018

Cited by 36 publications

(21 citation statements)

References 22 publications

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“…Pàmies presented an experimental work on active control of sound transmission through a restricted opening bottom hinged window and its application to aircraft fly-over incident noise. The result showed that an increase of almost 3 dB of transmission loss in the low frequency range [3].…”

Section: Introductionmentioning

confidence: 69%

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Performance Evaluation of Active Windows Using Speech Intelligibility

2016

International Conference on Engineering Technologies and Big Data Analytics (ETBDA’2016) Jan. 21-22, 2016 Bangkok (Thailand)

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Abstract-This paper presents an experimental work on the performance assessment of windows equipped with the active noise control technology. Recently, several active windows have been studied and proved to reduce the transmitted exterior noise through an open window. However, the performance of the systems has been evaluated only in terms of the sound pressure level or the power spectrum. In this paper, the speech intelligibility is adopted to assess the performance of the active windows for more practical measurements. The results of scale-model experiments show that the active window can improve the intelligibility as well as reduce the noise level.

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Section: Introductionmentioning

confidence: 69%

“…However, this solution is less effective in summer times or in southern countries where the windows need to be frequently opened. Several active noise control (ANC) systems have been applied to the open windows to solve this problem [1]- [3]. The systems were proved to reduce the transmitted exterior noise when the windows were open.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Active Windows Using Speech Intelligibility

2016

International Conference on Engineering Technologies and Big Data Analytics (ETBDA’2016) Jan. 21-22, 2016 Bangkok (Thailand)

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“…Several diseases occurred by the aircraft noise such as hypertension, cardiovascular, and sleeping disturbance were most prevalent problems that needed to be both anticipated and decreased. In addition, studies conducted by several researchers have revealed active and passive noise control in buildings [23][24][25]. As the means of aviation capacity growths by 10% every year in China and at about 3% hearing loss exposure to aircraft noise, Xie et al [23] observed the aircraft noise impact to the psychological system and cardiovascular in human.…”

Section: Noise Control On the Aircraft Noisementioning

confidence: 99%

Establishing Grounds for Building Orientation Mapping and Validation of Noise Level Correlation Modeling on Aircraft Take-off and Landing

2019

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This research highlights correlation modeling between residential buildings orientation toward the runway as noise source and noise level. Many studies used noise mapping to identify noise performance in cities, but none of them discussed building orientation as an effort to reduce noise. This research aims to resolve the noise exceeding threshold of 55 dB for landed residential area. The method used was empirical experiments based on ISO 1996-1 using a 1:1-scaled building block model that was rotatable on its axis on various orientation angles. To examine the difference in sound reduction patterns, measurements were carried out during aircraft take-off and landing in three measurement conditions: outside the building model (OS), inside the model with both closed (CW) and open window (OW). The relative values of sound reduction in every angle were mapped and a Correlation Modeling was then empirically developed and theoretically validated by origin-8 software. As a result, the empirical validation formula deviation averaged only 1.20% and 1.13% during take-off and landing respectively from the actual noise and the theoretical validation. Furthermore, the new modeling was verified as a derivation from the grand theory of inverse square law and could be applied for master plan design.

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“…The noise due to aircraft sound sources, modified by atmospheric [297][298][299][300][301][302][303][304][305][306][307][308][309][310] and ground effects and also housing and vegetation [311][312][313][314][315][316][317][318][319][320][321], is experienced outdoors by the occasional passer-by near an airport and by the near airport resident outside the home. When inside the outdoor-to-indoor sound transmission provides a simple and effective way to mitigate noise effects.…”

Section: Outdoor-to-indoor Noise Transmissionmentioning

confidence: 99%

On Physical Aeroacoustics with Some Implications for Low-Noise Aircraft Design and Airport Operations

Campos

2015

Aerospace

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Air traffic is growing at a steady rate of 3% to 5% per year in most regions of the world, implying a doubling every 15-25 years. This requires major advances in aircraft noise reduction at airports, just not to increase the noise exposure due to the larger number of aircraft movements. In fact it can be expected, as a consequence of increased opposition to noise by near airport residents, that the overall noise exposure will have to be reduced, by bans, curfews, fines, and other means and limitations, unless significantly quieter aircraft operations are achieved. The ultimate solution is aircraft operations inaudible outside the airport perimeter, or noise levels below road traffic and other existing local noise sources. These substantial noise reductions cannot come at the expense of a degradation of cruise efficiency, that would affect not just economics and travel time, but would increase fuel consumption and emission of pollutants on a global scale. The paper reviews the: (i) current knowledge of the aircraft noise sources; (ii) the sound propagation in the atmosphere and ground effects that determine the noise annoyance of near-airport residents; (iii) the noise mitigation measures that can be applied to current and future aircraft; (iv) the prospects of evolutionary and novel aircraft designs towards quieter aircraft in the near term and eventually to operations inaudible outside the airport perimeter. The 20 figures and 1 diagram with their legends provide a visual summary of the review.

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Active control of aircraft fly-over sound transmission through an open window

Cited by 36 publications

References 22 publications

Performance Evaluation of Active Windows Using Speech Intelligibility

Performance Evaluation of Active Windows Using Speech Intelligibility

Establishing Grounds for Building Orientation Mapping and Validation of Noise Level Correlation Modeling on Aircraft Take-off and Landing

On Physical Aeroacoustics with Some Implications for Low-Noise Aircraft Design and Airport Operations

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