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Artículos de revistas sobre el tema "Airborne sound insulation"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 18 de febrero de 2022

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1

Escuder Silla, E., J. Alba Fernández y J. Ramis Soriano. "Aislamiento acústico a ruido aéreo en acristalamientos de vidrio". Boletín de la Sociedad Española de Cerámica y Vidrio 46, n.º 4 (30 de agosto de 2007): 197–204. http://dx.doi.org/10.3989/cyv.2007.v46.i4.237.

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2

Ljunggren, Sten. "Airborne sound insulation of thin walls". Journal of the Acoustical Society of America 89, n.º 5 (mayo de 1991): 2324–37. http://dx.doi.org/10.1121/1.400971.

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3

Ljunggren, Sten. "Airborne sound insulation of thick walls". Journal of the Acoustical Society of America 89, n.º 5 (mayo de 1991): 2338–45. http://dx.doi.org/10.1121/1.400972.

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4

Bader Eddin, Mohamad, Sylvain Menard, Delphine Bard, Jean-Luc Kouyoumji y Nikolas-Georgios Vardaxis. "A Sound Insulation Prediction Model for Floor Structures in Wooden Buildings Using Neural Networks Approach". INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, n.º 2 (1 de agosto de 2021): 4166–76. http://dx.doi.org/10.3397/in-2021-2619.

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Recently, machine learning and its applications have gained a large attraction in different fields. Accurate predictions in building acoustics is vital especially in the design stage. This paper presents a sound insulation prediction model based on Artificial Neural Networks (ANNs) to estimate acoustic performance for airborne and impact sound insulation of floor structures. At an initial stage, the prediction model was developed and tested for a small amount of data, specifically 67 measurement curves in one third octave bands. The results indicate that the model can predict the weighted airborne sound insulation for various floors with an error around 1 dB, while the accuracy decreases for the impact sound especially for complex floor configurations due to large error deviations in high frequency bands between the real and estimated values. The model also shows a very good accuracy in predicting the airborne and impact sound insulation curves in the low frequencies, which are of higher interest usually in building acoustics. Keywords: building acoustics, airborne sound, impact sound, prediction model, neural networks

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5

Jung, Jae-Deok, Suk-Yoon Hong, Jee-Hun Song y Hyun-Wung Kwon. "Predictions of airborne noise between unit cabins by developing a cavity transfer matrix". Noise Control Engineering Journal 69, n.º 3 (1 de mayo de 2021): 229–42. http://dx.doi.org/10.3397/1/376923.

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The unit cabin has been used to construct internal ship space for improved efficiency and to reduce budgetary costs in shipbuilding. Because the cavity is placed between unit cabins, the noise of one room is transmitted through the sound insulating panel, the cavity, and the opposite sound-insulating panel. In this study, by developing a transfer matrix of the cavity between structures, airborne noise between unit cabins was predicted. A sandwich panel, which is usually used in ships, was employed to construct a double panel, and the sound insulation performance was confirmed by changing the thickness of the cavity. To improve the reliability of numerical results, they were compared with those from experiments conducted. The results showed that as the cavity size increases, the overall sound insulation performance improves. A parameter study was also conducted on the density, Young's modulus, thickness, and thickness ratio of the core of the sandwich panel. To improve the sound insulation performance, increasing the density of the core is preferable to increasing the core thickness. The panel thickness ratio should be increased to avoid performance degradation as a result of the resonance frequency.

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6

Ivanova, Yonka, Todor Partalin, Luben Lakov y Bojidar Jivov. "Airborne sound insulation of new composite wall structures". MATEC Web of Conferences 145 (2018): 05013. http://dx.doi.org/10.1051/matecconf/201814505013.

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Protection against noise is one of the essential requirements of the European Construction Product directive. In buildings, airborne sound insulation is used to define the acoustical quality between rooms. In order to develop wall structures with optimal sound insulation, an understanding of the physical origins of sound transmission is necessary. To develop a kind of knowledge that is applicable to the improvement of real walls and room barriers is the motive behind this study. The purpose of the work is to study the sound insulation of new composite wall structure.

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7

Hopkins, C. "The Effect of Foundation Details and Soil Types on the Airborne Sound Insulation of Masonry Cavity Walls". Building Acoustics 15, n.º 1 (enero de 2008): 1–20. http://dx.doi.org/10.1260/135101008784050205.

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Two important variables that affect the airborne sound insulation of cavity masonry separating walls in the field are the foundation detail and the soil type upon which the foundations are built. Vibration transmission was measured between cavity wall leaves on three different types of foundation: concrete deep trench fill, a strip footing and a strip footing with concrete infill. The results indicated that where a strip footing is used, higher sound insulation can be achieved without the concrete infill. Measurements of the dynamic properties of soils indicated significant differences between the compression stiffness per unit area and the loss factor of different soils. These different soil properties were seen to affect the airborne sound insulation of cavity walls. This explains some of the variation in airborne sound insulation between nominally identical masonry cavity separating walls in the field.

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8

Yeon, Jun Oh, Kyoung Woo Kim, Kwan Seop Yang y Myung Jun Kim. "Analysis of the Airborne Sound Insulation Performance of Floor Structures Based on the Intensity Method". Applied Mechanics and Materials 752-753 (abril de 2015): 796–99. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.796.

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Apartment buildings are constructed using box frame structures that integrate slabs and wall frames, and vibrations can easily travel through these integrated box frame structures. On the other hand, such a framed structure generates fewer gaps between structural elements, assuring a superior insulation performance of airborne sound compared to wooden houses. Vertically installed equipment running through different floor levels can serve as a transmission route for airborne sound of specific frequency bands. In this study, we sought to develop technical methods to improve the inter-floor airborne sound insulation performance. To this end, we measured the sound insulation performance of floor structures and intensity levels in noise penetration areas. The sound insulation performance of the living room floor structure was measured to exceed 51 dB, which was superior to that of the restroom floor by 2–7 dB. Intensity measurements identified the central and corner areas of the living room as high-level noise areas.

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9

Obadiah, Jason. "FIELD MEASUREMENT OF AIRBORNE SOUND INSULATION BETWEEN ROOMS". Ultimart: Jurnal Komunikasi Visual 12, n.º 1 (7 de enero de 2020): 24–33. http://dx.doi.org/10.31937/ultimart.v12i1.1397.

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Airborne sound can be a nuisance and a constant expose to the sound can in- troduced health problems to the people in the area especially areas where quiet environ- ment is a necessity. The objective of this measurement is to demonstrate the field mea- surement of the airborne sound insulation properties of interior walls. The measurement was done for determining the sound insulation properties of a partition between two rooms. This measurement will also determine the parameters and source of the prob- lems which are contributing to the airborne sound from the adjacent room. The results are that the volume of the room and the construction of the room (pipe construction and ceiling, etc.) have large effects to the sound transmitted between the rooms.

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10

Neubauer, Reinhard. "Advanced Rating Method of Airborne Sound Insulation". Applied Sciences 6, n.º 11 (26 de octubre de 2016): 322. http://dx.doi.org/10.3390/app6110322.

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11

Bradley, John. "Group subjective ratings of airborne sound insulation". Journal of the Acoustical Society of America 105, n.º 2 (febrero de 1999): 1175. http://dx.doi.org/10.1121/1.425561.

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12

Hongisto, Valtteri, David Oliva y Jukka Keränen. "Subjective and Objective Rating of Airborne Sound Insulation – Living Sounds". Acta Acustica united with Acustica 100, n.º 5 (1 de septiembre de 2014): 848–63. http://dx.doi.org/10.3813/aaa.918765.

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13

Fuchs, Andreas, Reinhard Wehr y Marco Conter. "Empirical study on the correlation between measurement methods under diffuse and direct sound field conditions for determining sound absorption and airborne sound insulation properties of noise barriers". INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, n.º 3 (1 de agosto de 2021): 3350–61. http://dx.doi.org/10.3397/in-2021-2383.

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In the frame of the SOPRANOISE project (funded by CEDR in the Transnational Road Research Programme 2018) the database of the European noise barrier market developed during the QUIESST project was updated with newly acquired data. This database gives the opportunity for an empirical study on the correlation between the different measurement methods for the acoustic properties of noise barriers (according to the EN 1793 series) to further investigate the interrelationships between these methods by using single-number ratings and third-octave band data. First a correlation of the measurement methods for sound absorption under diffuse field conditions (EN 1793-1) and sound reflection under direct sound field conditions (EN 1793-5) is presented. Secondly, a correlation of the measurement methods for airborne sound insulation under diffuse field conditions (EN 1793-2) and airborne sound insulation under direct sound field conditions (EN 1793-6) is shown. While for airborne sound insulation a distinct correlation is found due to the wide data range, for sound absorption no robust correlation can be found.

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14

Alba, Jesús, Jaime Ramis, Eva Escuder y Laura Berto. "Technical Note: Airborne Sound Insulation of Hollow Brickwork". Building Acoustics 14, n.º 3 (septiembre de 2007): 231–39. http://dx.doi.org/10.1260/135101007781998947.

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This paper reports on the uncertainty of in situ measurements of the airborne sound insulation of hollow-brick walls in different housing plans, with emphasis on the influence of expansion joints. The mean and standard deviation of multiple measurements are obtained, which show significant differences in insulation values despite the fact that the same construction was used in each case.

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15

Teslík, Jiří, Radek Fabian y Barbora Hrubá. "Determination of the Airborne Sound Insulation of a Straw Bale Partition Wall". Civil and Environmental Engineering 13, n.º 1 (1 de junio de 2017): 20–29. http://dx.doi.org/10.1515/cee-2017-0003.

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AbstractThis paper describes the results of a scientific project focused on determining of the Airborne Sound Insulation of a peripheral non-load bearing wall made of straw bales expressed by Weighted Sound Reduction Index. Weighted Sound Reduction Index was determined by measuring in the certified acoustic laboratory at the Faculty of Mechanical Engineering at Brno University of Technology. The measured structure of the straw wall was modified in combinations with various materials, so the results include a wide range of possible compositions of the wall. The key modification was application of plaster on both sides of the straw bale wall. This construction as is frequently done in actual straw houses. The additional measurements were performed on the straw wall with several variants of additional wall of slab materials. The airborne sound insulation value has been also measured in separate stages of the construction. Thus it is possible to compare and determinate the effect of the single layers on the airborne sound insulation.

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16

Nowoświat, Artur, Rafał Żuchowski, Michał Marchacz y Leszek Dulak. "Sound insulation of wooden floors". E3S Web of Conferences 49 (2018): 00077. http://dx.doi.org/10.1051/e3sconf/20184900077.

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The objective of the article is to assess acoustic insulation of a wooden floor structure between stories in a pre-war residential building. The measurements involved acoustic insulation against impact sounds and airborne sounds. The article presents the results of acoustic tests for noninsulated floors and then for floors insulated with mineral wool. First, the results of the research were analyzed in terms of single-number acoustic insulation rates. These results were compared to the standards and findings described by other researchers. Then, an analysis was carried out for the processes as a function of frequency. The conclusions described in this article allow us to assess the applied acoustic insulation system.

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17

Zamora Mestre, Joan Lluis y Andrea Niampira. "Lightweight ventilated façade: Acoustic performance in laboratory conditions, analysing the impact of controlled ventilation variations on airborne sound insulation". Building Acoustics 27, n.º 4 (11 de mayo de 2020): 367–79. http://dx.doi.org/10.1177/1351010x20916719.

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The use of double-sheet enclosures with an intermediate non-ventilated air cavity guarantees a higher airborne sound insulation. The insulation advantages depend on air tightness and the placement of sound absorbing material in the air cavity. The lightweight ventilated façade is a system constructed by the addition of an external light cladding on a heavy single wall to establish an intermediate air cavity. This air cavity can be ventilated under controlled cooling effects, because of Sun’s radiation, and to reduce the risk of dampness caused by rainwater. Owing to this ventilation, acoustic insulation of the lightweight ventilated façade could be less effective. However, some authors indicate that air cavity moderate ventilation does not necessarily lead to a significant reduction in the airborne sound insulation. The authors previously verified this situation in a real building where the existing façade of masonry walls was transformed into a lightweight ventilated façade. The preliminary results indicate the acoustic benefits can be compatible with the hygrothermal benefits derived from controlled ventilation. This article presents the next step, the evaluation of the lightweight ventilated façade acoustic performance under laboratory conditions to revalidate the previous results and refining aspects as the air cavity thickness or the state of openings ventilation. The main results obtained indicate that the airborne sound insulation in laboratory is aligned with the previous results in a real building. Air cavity thickness from 110 to 175 mm and ventilation openings from 0% to 3.84% of the façade area does not lead to a significant reduction in the airborne sound insulation.

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18

Cabrera, Densil, Nathan Ashmore y Cenc Kocer. "Airborne sound insulation of vacuum insulating glazing: General observations from measurements". Building Acoustics 23, n.º 3-4 (septiembre de 2016): 193–206. http://dx.doi.org/10.1177/1351010x16676811.

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19

Muhammad, Imran, Anne Heimes y Michael Vorländer. "Interactive real-time auralization of airborne sound insulation in buildings". Acta Acustica 5 (2021): 19. http://dx.doi.org/10.1051/aacus/2021013.

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Sound insulation auralization can be used as valuable tool to study the perceptual aspects of sound transmission in built environments for assessment of noise effects on people. It may help to further develop guidelines for building constructions. One advanced goal of real-time sound insulation auralization is to appropriately reproduce the condition of noise effects on the human perception and cognitive performance in dynamic and interactive situations. These effects depend on the kind of noise signal (i.e. speech, music, traffic noise, etc.) and on the context. This paper introduces a sound insulation auralization model. The sound insulation filters are constructed for virtual buildings with respect to complex sound propagation effects for indoor and outdoor sound sources. The approach considers the source room sound field with direct and diffuse components along with source directivity and position. The transfer functions are subdivided into patches from the source room to the receiver room, which also covers composite building elements, thus providing more detail to the actual building situations. Furthermore, the receiving room acoustics includes the reverberation of the room based on its mean free path, absorption and binaural transfer functions between its radiating walls elements and the listener. This more exact approach of sound insulation model agrees reasonably well with the ISO standard (i.e. diffuse field theory) under standard settings. It is also shown that the sound field significantly influences the transmitted energies via building elements depending on the directivity and position of the source. The proposed method is validated as a general scheme and includes more details for real-time auralization in specific situations especially in the cases where the simplified diffuse sound field approach fails. It is capable to be used in interactive Virtual Reality (VR) systems, which opens new opportunities for psychoacoustics research in noise effects on human.

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20

Thaden, Rainer. "An algorithm for auralization of airborne sound insulation". Journal of the Acoustical Society of America 105, n.º 2 (febrero de 1999): 1259. http://dx.doi.org/10.1121/1.426026.

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21

Ling, M. K. "Measurement of Sound Insulation of Automotive Body Components Using Sound Intensity". Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 206, n.º 2 (abril de 1992): 137–41. http://dx.doi.org/10.1243/pime_proc_1992_206_169_02.

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A small-scale test facility is described which enables manufacturers to assess the sound insulation of noise reduction treatments. Designed to provide a cheap and quick alternative to standard test methods, the technique uses sound intensity to measure the insertion loss of noise reduction treatments when subjected to airborne noise.

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22

Tămaş-Gavrea, Daniela-Roxana, Tünde-Orsolya Dénes, Raluca Iştoan, Ancuţa Elena Tiuc, Daniela Lucia Manea y Ovidiu Vasile. "A Novel Acoustic Sandwich Panel Based on Sheep Wool". Coatings 10, n.º 2 (7 de febrero de 2020): 148. http://dx.doi.org/10.3390/coatings10020148.

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The aim of this paper is to propose a novel sandwich panel, which would be suitable for sound absorption and airborne sound insulation, used as applied cladding or independent lightweight partition wall. As far as the authors are concerned, this is the first sheep wool-based sandwich panel using only natural materials. The structure was prepared using hydrated lime-based composite face sheets and a sheep wool-based core. Several parameters of the sandwich panel were determined, including sound absorption coefficient, airborne sound insulation, thermal conductivity, thermal resistance, compressive strength, and bending strength, respectively. The results indicate that the maximum sound absorption value of 0.903 was obtained at the frequency of 524 Hz in the case of the unperforated sample, 0.822 at 536 Hz in the case of the sample with 10% perforations, 0.780 at 3036 Hz in the case of the sample with 20% perforations, and 0.853 at 3200 Hz in the case of the sample with 30% perforations. The registered airborne sound insulation index of the panel was 38 dB. Based on the obtained data, it can be concluded that the studied panel recorded comparable values with other synthetic noise control solutions, which are suitable as applied cladding or an independent lightweight partition wall, with good acoustic properties.

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23

Szudrowicz, Barbara y Elżbieta Nowicka. "Factors affecting the sound insulation in the prefabricated buildings". Budownictwo i Architektura 13, n.º 4 (9 de diciembre de 2014): 049–56. http://dx.doi.org/10.35784/bud-arch.1692.

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The sound insulation in buildings is affected by many factors related to various sound transmission paths between rooms. Among them the following paths can be distinguished: the so called direct path dependent on the sound insulation of the partition between rooms, the structural flanking transmission paths and additional airborne paths due to sound transmission though leaks and ducts linking the rooms (e.g. ventilation ducts). The paper analyzes the influence of these factors on sound insulation in multifamily, prefabricates buildings. Laboratory and field measurement results made by ITB’s Acoustic Department in the period of 1975-85 are presented.

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24

del Rey, Romina, Jesús Alba, Juan Rodríguez y Laura Bertó. "Characterization of New Sustainable Acoustic Solutions in a Reduced Sized Transmission Chamber". Buildings 9, n.º 3 (7 de marzo de 2019): 60. http://dx.doi.org/10.3390/buildings9030060.

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In order to assess the airborne sound insulation of a new material or building solution, access to standardized laboratories, large and expensive facilities, and a sample area of at least 10 m2 are required. At the research and development stages of new sustainable acoustic materials for construction, it is not easy to make large sample areas available. Moreover, the financial investment in acoustic testing of materials during the research stage in standardized laboratories is excessive. In this work, the assessment of the airborne sound insulation of multi-layer partitions designed with new sustainable materials is presented. The assessed solutions are formed by green composite fiber boards as lightweight elements and a new material designed from sheep wool as absorbent material. The results of these 100% recyclable solutions are compared with lightweight element based solutions, which are commonly used for acoustic insulation. Characterization of those new sustainable solutions for building is leveraged in a reduced sized transmission chamber. The design, construction, and validation of this kind of laboratory are provided. This laboratory enables the assessment of the airborne sound insulation of a material in its research stage.

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25

Sipari, Pekka. "Sound Insulation of Multi-Storey Houses — A Summary of Finnish Impact Sound Insulation Results". Building Acoustics 7, n.º 1 (marzo de 2000): 15–30. http://dx.doi.org/10.1260/1351010001501471.

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Evidently a wooden house can be built so that modern requirements for both airborne and impact sound insulation are met with sufficient margins. However, low-frequency impact sounds produced by walking may be either audible to the building occupants or felt by them as non-audible vibrations. It is clear that the present rating methods and also perhaps the tapping machine are inadequate where wooden floors are concerned, because the results may be subjectively confusing. The present situation, where internationally there are several rating systems leading to different numerical results for the same building element, needs to be addressed. Existing methods should be developed into a single international method covering all types of floors. The question of how to rate low-frequency (32-100 Hz) footfall noises, which may not be simulated adequately by a tapping machine and rated with present methods, must be considered as a special problem separate from the general rating system. It is generally recommended to add to the mass and stiffness of the wooden floor (for example, by adding a concrete layer) to improve its overall vibration and impact sound insulation behaviour. Such floors are believed to better satisfy the requirements of building occupants.

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26

Mickaitis, Marius, Aleksandras Jagniatinskis y Boris Fiks. "AIRBORNE SOUND INSULATION IMPROVEMENT ON MASONRY PARTITIONS USING ADDITIONAL PLASTERBOARD LAYERS". Engineering Structures and Technologies 3, n.º 1 (21 de marzo de 2011): 33–40. http://dx.doi.org/10.3846/skt.2011.04.

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For the purposes of accumulating knowledge of how to comply with requirements for new buildings of obligatory sound class C or enhanced acoustic comfort sound classes A and B (Lithuanian Building Technical regulations STR 2.01.07:2003), the article discusses improvement on airborne sound insulation of partitions between dwellings using additional plasterboard layers. The results of an empirical approach were obtained performing in situ measurements of the partitions of masonry from silicate blocks and expanded-clay concrete blocks. Theoretical calculations without the evaluation of flanking paths are added. The paper looks at the peculiarities of in situ measurement methods and the estimation of the limiting uncertainty of the sound reduction index. It is showed that the values of the in situ measurements of the airborne sound reduction index in accordance with requirements EN ISO 140 and EN ISO 717 series for rooms having volume higher than 50 m3 varies depending on frequency range. It has been stated, that improvement on the weighed airborne sound reduction index in the frequency range from 100 Hz to 3150 Hz depends on the properties of additional layers and on the characteristics of the main constructions. Resonance in the low frequency range arising due to additional layers may reduce the weighed airborne sound reduction index defined in the frequency range from 50 Hz to 3150 Hz. This fact must be taken into account when designing improvement on masonry wall insulation using an additional layer in dwellings.

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27

Bondan Dwisetyo, Maharani Ratna Palupi y Fajar Budi Utomo. "UNCERTAINTY ANALYSIS OF LABORATORY MEASUREMENT OF AIRBORNE SOUND INSULATION". Spektra: Jurnal Fisika dan Aplikasinya 5, n.º 2 (31 de agosto de 2020): 97–108. http://dx.doi.org/10.21009/spektra.052.02.

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The evaluation and analysis of the uncertainty of laboratory measurement of airborne sound insulation have been carried out by Research Group for Acoustics and Vibration – National Standardization Agency of Indonesia (BSN). The aims of this work are to evaluate and analyze the uncertainty measurement of airborne sound insulation by pressure method, where it is focused only for the determination of sound transmission loss (STL) as a major product of this measurement according to ASTM, and guide to the expressions of Uncertainty in Measurement (GUM) provided by JCGM. The supplied parameter of uncertainty budgets includes measurement of sound pressure level (SPL) in a source room (L1), and measurement of some parameters in a receiver room such as SPL (L2), reverberation time (RT60), background noise (B), test opening area (S), and volume of receiver room (V). From the result of the case study, the source of uncertainty that has a top contribution for obtaining expanded uncertainty is considered as the repeated measurement of the measured parameter such as L1, L2, and RT60 at the frequency range 250 Hz – 315 Hz. Meanwhile, the standard uncertainty that provided by the calibration certificate also contributes to the final result, where it is supplied by an acoustic calibrator and sound analyzer, respectively. Furthermore, the sources obtained from the readability parameter has a slight effect on this whole result. Therefore, the maximum and minimum value of expanded uncertainty is determined that their values are 0.70 dB and 0.43 dB for the frequency of 315 Hz and 1600 Hz, respectively.

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28

Zdražilová, Naďa, Denisa Donová y Iveta Skotnicova. "Analysis of Predictive Calculation Methods of Airborne Sound Insulation". Applied Mechanics and Materials 835 (mayo de 2016): 573–78. http://dx.doi.org/10.4028/www.scientific.net/amm.835.573.

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Acoustic properties of building structures are currently very actual theme with regard to the development of new building and insulating materials, while the methods for estimating the airborne sound reduction index evolve mainly from the second half of the 20th century. For mutual comparison of selected prediction methods and for determination of their suitability it has been provided a calculation of weighted sound reduction index RW [dB] from the input parameters of materials identified by laboratory measurements, calculation of weighted apparent sound reduction index R ́W [dB] and these values were compared with in-situ measurements. The aim of this paper is to determine the most appropriate method to calculate RW [dB] and R ́W [dB] values of lightweight building constructions with regard to their practical applicability, accuracy of estimation and complexity of the calculations.

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29

Park, H. K., J. S. Bradley y B. N. Gover. "Evaluating airborne sound insulation in terms of speech intelligibility". Journal of the Acoustical Society of America 123, n.º 3 (marzo de 2008): 1458–71. http://dx.doi.org/10.1121/1.2831736.

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30

Rodríguez-Molares, Alfonso. "A new method for auralisation of airborne sound insulation". Applied Acoustics 74, n.º 1 (enero de 2013): 116–21. http://dx.doi.org/10.1016/j.apacoust.2012.06.017.

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31

Neubauer, Reinhard O. y Jian Kang. "Airborne sound insulation in terms of a loudness model". Applied Acoustics 85 (noviembre de 2014): 34–45. http://dx.doi.org/10.1016/j.apacoust.2014.03.024.

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32

Machimbarrena, María, Carolina Rodrigues A. Monteiro, Stefano Pedersoli, Reine Johansson y Sean Smith. "Uncertainty determination of in situ airborne sound insulation measurements". Applied Acoustics 89 (marzo de 2015): 199–210. http://dx.doi.org/10.1016/j.apacoust.2014.09.018.

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33

Neubauer, Reinhard O. y Jian Kang. "Airborne sound insulation as a measure for noise annoyance". Journal of the Acoustical Society of America 133, n.º 5 (mayo de 2013): 3553. http://dx.doi.org/10.1121/1.4806457.

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34

Michalski, Ranny L. X., Daiana Ferreira, Marco Nabuco y Paulo Massarani. "Uncertainty evaluation in field measurements of airborne sound insulation". Journal of the Acoustical Society of America 123, n.º 5 (mayo de 2008): 3503. http://dx.doi.org/10.1121/1.2934384.

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35

Lundberg, Karl-Ola. "An Alternative Method for Measurement of Airborne Sound Insulation". Building Acoustics 8, n.º 1 (marzo de 2001): 57–74. http://dx.doi.org/10.1260/1351010011501731.

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A method for determination of the transmission coefficient from Complex Modulation Transfer Functions CMTF:s based on measured impulse-responses is shown. In the method a separate measurement of the equivalent sound absorption area is not needed in contrast to in the standardised measurement. By averaging over a number of estimates of the impulse-response the influence of background noise can be reduced substantially, implying that low-power sources can be used. A model for the power balance in the receiving room with time-varying power is considered. In the model the quotient of the receiving room intensity and the source room intensity has one pole, which is proportional to the equivalent sound absorption area in the receiving room, and a gain, proportional to the transmission coefficient. In the physical system the power can be time-varied by letting the system excitation signal consist of random noise modulated with a deterministic time-varying function. However, since the ensemble average of the squared response is proportional to the squared impulse-response convolved with the squared modulating function, random excitation is avoided and replaced by impulse-response measurements. The quotient of intensities in the model is in the physical system a quotient of CMTF:s. Experiments are carried out in an airborne sound insulation laboratory. For comparison, standardised measurements are also carried out. It is found that the presented method gives as result comparatively small transmission coefficients, though the relative differences are small. By refining the power balance model by introducing an energy propagation time delay, and selecting an appropriate delay, the differences were diminished.

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36

Gerretsen, E. "Calculation of airborne and impact sound insulation between dwellings". Applied Acoustics 19, n.º 4 (1986): 245–64. http://dx.doi.org/10.1016/0003-682x(86)90001-0.

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37

Guidorzi, Paolo y Massimo Garai. "Advancements in Sound Reflection and Airborne Sound Insulation Measurement on Noise Barriers". Open Journal of Acoustics 03, n.º 02 (2013): 25–38. http://dx.doi.org/10.4236/oja.2013.32a004.

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38

Dlhý, Dušan. "Types of Doors and its Impact on Airborne Sound Insulation". Advanced Materials Research 855 (diciembre de 2013): 225–28. http://dx.doi.org/10.4028/www.scientific.net/amr.855.225.

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Acoustically speaking, a door as a part of a wall cladding or internal wall partition is usually the weakest element of such a structure [1,2]. The less effective sound insulation properties of a door, in comparison with the main wall structure, results in the fact that the sound reduction index of the door is one of the most important factors affecting the total sound isolation properties of a complex wall.

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39

Frescura, Alessia, Pyoung Jik Lee, Jeong-Ho Jeong y Yoshiharu Soeta. "Electroencephalogram (EEG) responses to indoor sound sources in wooden residential buildings". INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, n.º 4 (1 de agosto de 2021): 1989–98. http://dx.doi.org/10.3397/in-2021-2021.

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The present study aimed to explore relationships between physiological and subjective responses to indoor sounds. Specifically, The electroencephalograms (EEG) responses to neighbour sounds in wooden dwellings were investigated. Listening tests were performed to collect EEG data in distinct acoustics scenarios. Experimental work was carried out in a laboratory with a low background noise level. A series of impact and airborne sounds were presented through loudspeakers and subwoofer, while participants sat comfortably in the simulated living room wearing the EEG headset (B-alert X24 system). The impact sound sources were an adult walking and a child running recorded in a laboratory equipped with different floor configurations. Two airborne sounds (a live conversation and a piece of classical piano music) were digitally filtered to resemble good and poor sound insulation performances of vertical partitions. The experiment consisted of two sessions, namely, the evaluation of individual sounds and the evaluation of the combined noise sources. In the second session, pairs of an impact and an airborne sound were presented. During the listening test, electroencephalography alpha reactivity (α-EEG) and electroencephalography beta reactivity (β-EEG) were monitored. In addition, participants were asked to rate noise annoyance using an 11-point scale.

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40

Xu, Nan. "Research and Application of Building Enclosing Structure Used in Equipment Noise Control". Applied Mechanics and Materials 423-426 (septiembre de 2013): 1272–78. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.1272.

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Porous material has a function of sound absorption, dense hard material can prevent the spread of airborne sound. The building envelope which is made up of different properties of materials, with good effects on sound insulation, sound absorption and noise elimination, can be widely used in noise control engineering.

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41

Kosała, Krzysztof, Leszek Majkut y Ryszard Olszewski. "Application of Statistical Energy Analysis Method for modelling sound insulation of baffles". AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, n.º 12 (31 de diciembre de 2018): 106–9. http://dx.doi.org/10.24136/atest.2018.364.

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The article presents the model of sound insulation of single homo-geneous baffles based on the Statistical Method of Energy Analysis. The determined frequency characteristics of airborne sound insulation of the baffles obtained from the calculation model with the results of experimental tests were compared. Calculations using the Statistical Method of Energy Analysis and laboratory tests were performed for plates made of plexiglass and acrylic.

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42

Saltykov, Ivan P. "Sound insulation design of the thin partitions on the base of concentrated parameters model". Vestnik MGSU, n.º 3 (marzo de 2020): 353–67. http://dx.doi.org/10.22227/1997-0935.2020.3.353-367.

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Introduction. The theoretical and practical approach on the base of the discrete parameter's method to the acoustic insulation of the thin partitions by Candidate of Science, Prof. Zakharov A.V. is given in this issue. The method allowed to develop a logically conclusive and consistent physical airborne sound insulation model for one-layered massive and light partitions either. This issue concentrates on providing of the engineer calculation technique of the sound insula-tion for the thin partitions and, also, on comparison of the technique's results with the computations by the current normative documents. Materials and methods. The application of the same “Mass Action Law's” formula both for the normal and the oblique noise wave's incidence on the sound isolating plate, regardless the sound waves angles, is mathematically and physically approved. The essence of the concentrated parameters, such as concentrated and reduced material's mass, is revealed. The equations of momentum conservation law and kinetic energy conservation are used to obtain the coefficient of the oscillation velocity transmission. The formulas for airborne sound insulation at the diapasons before and after the sound wave's coincidence frequency are written. Results. The damping air property's influence on the thin partition's sound insulation is considered, and it's formulas are represented. The formulas for taking into account the reduction of sound insulation at the resonances in sound protective slab or in a partition are also given. The general equation for the thin partition's sound insulation by the method of localized (discrete) parameters are derived. The example of detailed calculation of the sound isolation of the thin asbestos-cement partition is demonstrated. The comparison between the medial three octave deviations of the sound isolation values and the experimental results in case of the SP (Russian normative document) method and in case of the introduced author's method for the different construction materials is represented. Conclusions. The proposedsound insulation calculation method for the thin light partitions, which is based on the concentrated parameters model, gives very close to experiments results. So, it enables to find the insulation figures across the entire standard frequency range, according to the initial physical and technical materials' and constructions' features.

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43

Kümmel, Julian. "Effects of thermal insulation on the airborne sound insulation of AAC masonry walls". ce/papers 2, n.º 4 (septiembre de 2018): 89–95. http://dx.doi.org/10.1002/cepa.888.

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44

Kolářová, Zuzana y Lubor Kalousek. "Sound Insulation Properties of the Facade Elements - The Influence of Filling Cavities of Facade Elements on the Values of Laboratory Airborne Sound Insulation". Advanced Materials Research 899 (febrero de 2014): 509–12. http://dx.doi.org/10.4028/www.scientific.net/amr.899.509.

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The paper is focused on the issues of sound insulation properties of the facade elements which are currently applied mainly at industrial hall buildings. Requirements for the sound insulation properties of these buildings are requested not only from users themselves, but also from residents of surrounding objects, who are often disturbed by operation of the halls. In the paper are presented outcomes from laboratory measurements of the specific samples of external cladding. These measurements were performed by the mutual cooperation between the laboratory of the Brno University of Technology and the firm of civil engineering practice, which develops and produces these constructions. Presented data are focused particularly on the influence of filling cavities of facade elements just with regard to the sound insulation properties, i.e. the values of laboratory airborne sound insulation.

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45

Dlhý, Dušan. "Verification of Calculating Sound Insulation of Building Structures According to EN 12354 with the Results of Measurements in Site". Advanced Materials Research 855 (diciembre de 2013): 229–32. http://dx.doi.org/10.4028/www.scientific.net/amr.855.229.

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Currently, different computing programs, such as Bastian, SONarchitect, etc., which are designed to estimate (calculate) airborne / impact sound insulation of dividing constructions, sound insulation of building envelopes, sounds levels of acoustic powers emitted from building envelopes and other parameters, are being increasingly used in the project preparation phase of buildings. These programs, in most cases, carry out the calculation according to EN 12354 - 1, 2, 3, 4, 5. The computational model is based on the measured values characterizing the direct or indirect transfer through side paths of building constructions (by using laboratory measurements) and on theoretically derived methods of sound propagation in building constructions [. The result of proper modelling of the structure, or the entire object, should give the best estimate of acoustic parameters compared with the measured values carried out directly at the site under EN ISO 140 [2].

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46

Dimitrijević, Stefan M., Miomir M. Mijić y Dragana S. Šumarac Pavlović. "Indoor sound level spectra of public entertainment premises for rating airborne sound insulation". Journal of the Acoustical Society of America 147, n.º 3 (marzo de 2020): EL215—EL220. http://dx.doi.org/10.1121/10.0000800.

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47

Dodd, George. "Rating the impact sound insulation of flooring from its airborne sound reduction index". Journal of the Acoustical Society of America 131, n.º 4 (abril de 2012): 3320. http://dx.doi.org/10.1121/1.4708421.

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48

Tsukernikov, Ilya y Alexandr Fadeev. "RESULTS OF A SERIES OF ACOUSTIC MEASUREMENTS OF NOISE PENETRATING THROUGH THE PARTITION BETWEEN TWO CINEMAS". Akustika 32 (1 de marzo de 2019): 195–200. http://dx.doi.org/10.36336/akustika201932195.

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The number of cinemas has increased over the past 10 - 15 years in Russia. The main part of new cinemas is multiplex cinemas in the shopping and entertainment malls. It is mean that in multiplex two cinemas may show the movies at the same time. The problem of airborne sound isolating by a partition/slab between two multiplex cinemas halls is considered. The analysis of the regulatory and technical documents (the International Standard, and the national documents of the Russian Federation, as well as the corporative standards of international cameramen) is done. The levels of penetrating noise through a partition between two cinemas halls are measured for two cinemas. The discrepancy between the estimated sound insulation parameters and the requirements of the current regulatory documents are shown. A series of field measurements of acoustic parameters is carried out. The discrepancy of the airborne sound insulation parameters by partition is shown. The case of one-number estimation of airborne of sound isolation in the law frequency range is considered. The influence of acoustic finishing on the levels of penetrating noise from one cinema hall to another is estimated.

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49

Demirkale, Sevtap Yilmaz y Mine Ascigil-Dincer. "Retrofitting masonry and cavity brick façades for different noise zones using laboratory measurements". Building Acoustics 24, n.º 2 (1 de marzo de 2017): 77–100. http://dx.doi.org/10.1177/1351010x17693399.

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Façade airborne sound insulation is crucial for protection of indoor environment from environmental noise. In Turkey, sound insulation in new buildings is bound by law, but 6 million pre-1980 dwellings with thin brick walls and single-glazed windows used in highly transparent façades should be retrofitted. In this study, sound reduction index of masonry and cavity exterior walls which consist of brick, mortar, gypsum board and mineral wool and of common window types is measured in sound insulation test rooms. The study compares and evaluates the effects of plaster, brick thickness, cavity depth, mineral wool thickness and mineral wool placement on sound reduction index values, using traditional materials and building techniques. Traditional brick wall façades and possible retrofitting of these façades are evaluated for sound insulation of bedrooms and living rooms in different noise zones, 55, 60, 65, 70 and 75 dBA, with various transparency ratios, 0%, 30%, 40%, 50% and 70%. The analysis shows that window types and single-layer walls are the deterministic factors in evaluating sound insulation in retrofitting projects and that it is not possible to provide proper aural comfort in high noise zones.

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50

Samiilenko, N. O. "Calculation of sound insulation of airborne noise of indirect action". Electronics and Communications 17, n.º 5 (12 de noviembre de 2012): 56–61. http://dx.doi.org/10.20535/2312-1807.2012.17.5.218363.

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