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Relevant bibliographies by topics / Noise control

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Academic literature on the topic 'Noise control'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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Journal articles on the topic "Noise control"

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Rheem, JaeYeol. "Intelligent Adaptive Active Noise Control in Non-stationary Noise Environments." JOURNAL OF THE ACOUSTICAL SOCIETY OF KOREA 32, no. 5 (2013): 408. http://dx.doi.org/10.7776/ask.2013.32.5.408.

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SOUMA, ISAO. "Noise Control." Sen'i Gakkaishi 44, no. 9 (1988): P338—P339. http://dx.doi.org/10.2115/fiber.44.9_p338.

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ENAMITO, Akihiko. "Noise Control." Journal of the Society of Mechanical Engineers 103, no. 976 (2000): 160–63. http://dx.doi.org/10.1299/jsmemag.103.976_160.

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Paulo Fernandes Garcia, José, Edson dos Santos Bortoloto, Jean Marcos de Souza Ribeiro, and Lizete Maria Crnkowise Fernandes Garcia. "Active Noise Attenuation Using Lqg/ltr Control." Eletrônica de Potência 9, no. 2 (November 1, 2004): 23–27. http://dx.doi.org/10.18618/rep.2004.2.023027.

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Paulo Fernandes Garcia, José, Edson dos Santos Bortoloto, Jean Marcos de Souza Ribeiro, and Lizete Maria Crnkowise Fernandes Garcia. "Active Noise Attenuation Using Lqg/ltr Control." Eletrônica de Potência 9, no. 2 (November 1, 2004): 23–27. http://dx.doi.org/10.18618/rep.2005.2.023027.

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Chernyak, Mykola, and Roman Chornomorets. "Experimental studies of electrical noise in the aircraft control system." MECHANICS OF GYROSCOPIC SYSTEMS, no. 39 (May 20, 2020): 31–46. http://dx.doi.org/10.20535/0203-3771392020229073.

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Currently, the problem of reducing noise in electrical equipment is important, because a noise in the system affects its components and can cause unpredictable behavior of the electrical system. This is especially important onboard of unmanned aerial vehicle (UAV), where all components are located close to each other and their noise has a significant cross-effect. Conductors passing through a noisy environment can pick up a noise and direct it to another circuits, where it creates interference. Some examples of such noise problems are: degraded accuracy characteristics of microcontroller modules (Analog-to-Digital Converters (ADC), Phase-Locked Loops (PLL) and other) due to noise on supply and reference voltages, wrong acquisition of the digital signals and interference with global navigation satellite system (GNSS) or remote control system of UAV. This article is dedicated to the research of the influence of electrical noise, which is formed by the components of the UAV control system (engines, electric motor controllers, microcontroller etc.), on the performance and noise protection of electronic components of the UAV control system. After the research it was concluded that the main sources of elecrtrical noise in the UAV control system are: high currents, consumed by electronic speed controllers (with motors), high-speed toggling of clock signal of SPI / I2C communication, regulation by step-down voltage regulator and internal processes inside the microcontroller due to work of flight control firmware. The waveforms of generated noises, caused by each source was measured with oscilloscope and depicted in the article.

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Selvaraj, Poovarasan, and E. Chandra. "A variant of SWEMDH technique based on variational mode decomposition for speech enhancement." International Journal of Knowledge-based and Intelligent Engineering Systems 25, no. 3 (November 10, 2021): 299–308. http://dx.doi.org/10.3233/kes-210072.

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In Speech Enhancement (SE) techniques, the major challenging task is to suppress non-stationary noises including white noise in real-time application scenarios. Many techniques have been developed for enhancing the vocal signals; however, those were not effective for suppressing non-stationary noises very well. Also, those have high time and resource consumption. As a result, Sliding Window Empirical Mode Decomposition and Hurst (SWEMDH)-based SE method where the speech signal was decomposed into Intrinsic Mode Functions (IMFs) based on the sliding window and the noise factor in each IMF was chosen based on the Hurst exponent data. Also, the least corrupted IMFs were utilized to restore the vocal signal. However, this technique was not suitable for white noise scenarios. Therefore in this paper, a Variant of Variational Mode Decomposition (VVMD) with SWEMDH technique is proposed to reduce the complexity in real-time applications. The key objective of this proposed SWEMD-VVMDH technique is to decide the IMFs based on Hurst exponent and then apply the VVMD technique to suppress both low- and high-frequency noisy factors from the vocal signals. Originally, the noisy vocal signal is decomposed into many IMFs using SWEMDH technique. Then, Hurst exponent is computed to decide the IMFs with low-frequency noisy factors and Narrow-Band Components (NBC) is computed to decide the IMFs with high-frequency noisy factors. Moreover, VVMD is applied on the addition of all chosen IMF to remove both low- and high-frequency noisy factors. Thus, the speech signal quality is improved under non-stationary noises including additive white Gaussian noise. Finally, the experimental outcomes demonstrate the significant speech signal improvement under both non-stationary and white noise surroundings.

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Naoe, Nobuyuki, Syohei Osaka, and Hirofumi Yamada. "Active Noise Control of Motor Noise." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 32, no. 5 (1997): 377–81. http://dx.doi.org/10.5988/jime1966.32.377.

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SASAKI, Yuichi, Yoichi KANEMITSU, Shinya KIJIMOTO, and Koichi MATSUDA. "Active Noise Control against incoming noise." Proceedings of the Symposium on Environmental Engineering 2003.13 (2003): 49–52. http://dx.doi.org/10.1299/jsmeenv.2003.13.49.

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Lee, Nokhaeng, and Youngjin Park. "Active Noise Control for Dishwasher noise." Journal of Physics: Conference Series 744 (September 2016): 012189. http://dx.doi.org/10.1088/1742-6596/744/1/012189.

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Dissertations / Theses on the topic "Noise control"

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Ma, Xuxin. "Ducted fan noise control." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B44143072.

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Ma, Xuxin, and 马旭鑫. "Ducted fan noise control." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B44143072.

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Belayat, Nadia Bousseksou. "Entertainment noise control in Algeria." Thesis, London Metropolitan University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523012.

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These last ten years, in Algeria noise pollution has become an environmental issue where people are exposed to unacceptable levels of noise. The main noise source is from traffic, from neighbourhood and domestic noise particularly {entertainment premises known as wedding halls}. Other significant sources of noise annoyance in Algeria include building construction and household noise as well as car alarms and even barking dogs. In this present study, my concern will be on one of the main noise source in Algeria which is noise from entertainment halls. In Algeria, there is no existing framework or enforceable code for noise control. In view of the absence of a proper noise control standard in Algeria, a large number of wedding halls have been built without any protection {insulation, double glazing ... } causing disturbance and annoyance in the neighbourhood. The noise from these wedding halls is badly affecting neighbours. Modern amplification and music styles make this an increasing problem. Therefore local people saw their lives disturbed by the noise caused by these kinds of recreational halls. As a result of the lack of standards, this study was conducted. A noise survey has never been previously attempted in Algeria. The aim of this survey is to establish noise level limits and measurements according to the WHO guidelines recommended to create the necessary set off regulations and guidelines on which we could rely in treating the different noise problems in Algeria. During my investigations in Algiers concerning this subject I have understood that all the entertainment premises I have visited in the centre of the capital and its suburbs have been working without applying any true ,clear regulations concerning noise in general . I have found out that unfortunately {for these premises neighbourhood} no serious standards or codes of practice have been written in Algeria for the purpose of giving guidance or an objective assessment methodology to assist officers investigating neighbour and neighbourhood noise when they happen to deal with noise complaints. Up to now the only body noise complainers could refer to solve their noise problem is the police who most of the time resolve to make the antagonists meet, to cut the matter short they usually order them to reach a mutual compromise and resolve the problem amicably. In fact, most of the wedding halls which have sprung up everywhere and everyday between 2000 and 2008 have opened up in centre of towns close to places of residence entailing extreme noise nuisance to the neighbourhood. The people affected by noise disturbance do not know who can settle their complaints, except of course, a legal action which of course involves a loss of time and money. The measurements show a considerable increase in the noise level when the 'weddings' are on. This would not prove acceptable in the UK. Arguments will need to be advanced as to the correct criteria to be used in the specific circumstances of Algeria and how they can be achieved using local materials and construction practices.

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Copley-Woods, Djuna S. (Djuna Sunlight) 1977. "Aircraft interior acoustic noise control." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9330.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
Includes bibliographical references (p. 45).
An experimental study was perfonned to determine which materials are best suited for internal aircraft noise reduction. An impedance tube with dimensions of a scaled aircraft was constructed and evaluated, and eleven materials were tested and compared based on their noise reduction properties, weight, and thickness. Polyvinylidene Fluoride was tested for use in active noise control for a large space.
by Djuna S. Copley-Woods.
S.B.

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Farooqui, Maaz. "Innovative noise control in ducts." Doctoral thesis, KTH, Farkost och flyg, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192927.

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The objective of this doctoral thesis is to study three different innovative noise control techniques in ducts namely: acoustic metamaterials, porous absorbers and microperforates. There has been a lot of research done on all these three topics in the context of duct acoustics. This research will assess the potential of the acoustic metamaterial technique and compare to the use of conventional methods using microperforated plates and/or porous materials. The objective of the metamaterials part is to develop a physical approach to model and synthesize bulk moduli and densities to feasibly control the wave propagation pattern, creating quiet zones in the targeted fluid domain. This is achieved using an array of locally resonant metallic patches. In addition to this, a novel thin slow sound material is also proposed in the acoustic metamaterial part of this thesis. This slow sound material is a quasi-labyrinthine structure flush mounted to a duct, comprising of coplanar quarter wavelength resonators that aims to slow the speed of sound at selective resonance frequencies. A good agreement between theoretical analysis and experimental measurements is demonstrated. The second technique is based on acoustic porous foam and it is about modeling and characterization of a novel porous metallic foam absorber inside ducts. This material proved to be a similar or better sound absorber compared to the conventional porous absorbers, but with robust and less degradable properties. Material characterization of this porous absorber from a simple transfer matrix measurement is proposed.The last part of this research is focused on impedance of perforates with grazing flow on both sides. Modeling of the double sided grazing flow impedance is done using a modified version of an inverse semi-analytical technique. A minimization scheme is used to find the liner impedance value in the complex plane to match the calculated sound field to the measured one at the microphone positions.

QC 20160923

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Tu, Yifeng. "Multiple Reference Active Noise Control." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36790.

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The major application of active noise control (ANC) has been focused on using a single reference signal; the work on multiple reference ANC is very scarce. Here, the behavior of multiple reference ANC is analyzed in both the frequency and time domain, and the coherence functions are provided to evaluate the effectiveness of multiple reference ANC. When there are multiple noise sources, multiple reference sensors are needed to generate complete reference signals. A simplified method combines those signals from multiple reference sensors into a single reference signal. Although this method could result in satisfactory noise control effects under special circumstances, the performance is generally compromised. A widely adopted method feeds each reference signal into a different control filter. This approach suffers from the problem of ill-conditioning when the reference signals are correlated. The problem of ill-conditioning results in slow convergence rate and high sensitivity to measurement error especially when the FXLMS algorithm is applied. To handle this particular problem, the decorrelated Filtered-X LMS (DFXLMS) algorithm is developed and studied in this thesis. Both simulations and experiments have been conducted to verify the DFXLMS algorithm and other issues associated with multiple reference ANC. The results presented herein are consistent with the theoretical analysis, and favorably indicate that the DFXLMS algorithm is effective in improving the convergence speed. To take the maximum advantage of the TMS320C30 DSP board used to implement the controller, several DSP programming issues are discussed, and assembly routines are given in the appendix. Furthermore, a graphical user interface (GUI) running under Windows' environment is introduced. The main purpose of the GUI is to facilitate parameters modification, real time data monitoring and DSP process control.
Master of Science

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Mitchell, Morgan Adrienne. "Passive Noise Control in Incubators." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51603.

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Incubators in the Neonatal Intensive Care Unit (NICU) are known to produce high Sound Pressure Levels (SPL) that can have detrimental effects on infants. Currently measured SPL in NICU's using traditional incubators are above the recommended 45 dB[A] threshold value [1]. Due to operating equipment and environmental noise, the sound level that is perceived by the developing newborn can cause both short and long term hearing loss as well as psychological damage [1].This thesis presents a study on how passive noise control devices can be used to reduce SPL levels in incubator NICU environments. A combination of experimental testing coupled with Finite Element simulations were performed for a modern incubator. In the experimental portion, porous mattresses were analyzed to reduce SPL values. These same test scenarios were modeled using the FE software. Using this model, extensive studies were performed on an arrangement of porous mattress materials with simple foam shapes to determine sound absorbing characteristics of several designs. Data was collected and studied at a NICU at Children\'s Hospital in Norfolk, Va. Experimental work showed improvement in reducing SPL with multiple thicknesses for different sound absorbing mattresses. The experimental outcomes validated the FE simulation model by showing similar trends at the baby\'s ears. In simulation work, polyimide foam had the best low frequency performance while polyurethane had the greatest performance in middle and high frequencies. Designs that used full-width foam treatments across the incubator produced the overall greatest reduction in noise around the baby control volume by approximately 26%.
Master of Science

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Yip, Ying-ling. "Review of road traffic noise control." Click to view the E-thesis via HKUTO, 1998. http://sunzi.lib.hku.hk/hkuto/record/B42128523.

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Kaymak, Erkan. "Noise reduction and active noise control of high frequency narrow band dental drill noise." Thesis, Brunel University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445923.

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Peng, Dandan, and 彭丹丹. "Compact environmental noise absorber." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/209491.

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With the development of the industry and the society, noise pollution becomes increasingly severe, especially in large cities. Generally, there are three major noise sources, namely industrial noise, traffic noise and community noise. In response, several measurements have been developed to achieve effective noise control. Examples of noise control methods are reduction of noise at source and abatement of noise during the transmission. Since noise sources are more difficult to control, and sometimes already fixed, noise control during sound transmission is more broadly applied. Traditional passive noise control techniques include Helmholtz resonators and noise absorption materials like felt, glass mineral. The sound absorption materials (SAM) are found to be efficient in attenuating noise in high frequency domain, but their performance at low frequencies is quite poor. On the other hand, the Helmholtz resonator works perfect at any target frequency but suffers from its narrow absorption bandwidth, so that it’s only effective within a limited frequency band. As an innovative solution to passive noise control problem, micro-perforated panel absorber (MPPA) has attracted great interest in recent years. It turns out to be a competitive alternative to sound absorption materials and Helmholtz resonator. The parallel and series arrangement of MPPAs backed with cavities of different depths allows them to obtain decent noise absorption performance over a relatively broad frequency range. However, the performance of MPPA is restricted by its volume, as large volume is demanded for decent low-frequency absorption, which is also the case for noise absorption materials. In this thesis, a potential way to improve the low-frequency performance of the MPPA without occupying extra volume is proposed and implemented to tests. The focus is the adjustment of speed of sound and it is beneficial in different applications such as the following. In low frequency noise control, the size of the absorber in at least one dimension is often related to the wavelength and it is often too long. With a reduced speed of sound one can reduce this size while keeping the overall volume constant. Along this line of thinking, the effect of cavity configuration on its acoustic properties is investigated by two steps. Firstly, the property of a waveguide consisting of several identical elements is studied. The number of element is chosen to magnify the effect of the configuration. It turns out the irregularity of the duct shape can slow down the speed of sound of the plane wave by increasing the acoustic mass. Secondly, the absorption performance of an MPPA backed with an irregular cavity is evaluated. The shape of the cavity is the same as the element in the first step. In advance, the parallel arrangement of two MPPAs backed with irregular cavities is investigated, in order to look into the effect of cavity shape on inter-resonator interaction. The final results indicate that cavity design is an effective method to enhance the noise absorption performance of the MPPA arrays in the low-frequency domain.
published_or_final_version
Mechanical Engineering
Master
Master of Philosophy

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Books on the topic "Noise control"

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Taherzadeh, Shahram, ed. Noise Control. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118863848.

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Wilson, Charles E. Noise control. Malabar, FL: Krieger, 2005.

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Brüel & Kjaer., ed. Noise control. 2nd ed. Naerum, Denmark: Brüel & Kjaer, 1986.

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Garg, Naveen. Environmental Noise Control. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87828-3.

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Harris, David A., ed. Noise Control Manual. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4757-6009-5.

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R, Leitch R., ed. Active noise control. Oxford [England]: Clarendon Press, 1992.

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Pelton, Howard K. Noise control management. New York: Van Nostrand Reinhold, 1993.

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Vance, Mary A. Noise control: Monographs. Monticello, Ill: Vance Bibliographies, 1986.

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Corporation, Owens-Corning Fiberglas. Noise control design guide. Toledo, Ohio: Owens-Corning Fiberglas Corp., 1990.

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Snyder, Scott D. Active Noise Control Primer. New York, NY: Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4419-8560-6.

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Book chapters on the topic "Noise control"

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Hansen, Colin H., and Kristy L. Hansen. "Sound-Absorbing Materials: Properties and their Measurement." In Noise Control, 213–50. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-5.

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Hansen, Colin H., and Kristy L. Hansen. "Sound Propagation Outdoors." In Noise Control, 169–212. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-4.

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Hansen, Colin H., and Kristy L. Hansen. "Fundamentals." In Noise Control, 1–60. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-1.

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Hansen, Colin H., and Kristy L. Hansen. "Loudness, Descriptors of Noise, Noise Criteria and Instrumentation." In Noise Control, 61–118. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-2.

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Hansen, Colin H., and Kristy L. Hansen. "Sound Sources and Sound Power Measurement." In Noise Control, 119–68. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-3.

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Hansen, Colin H., and Kristy L. Hansen. "Partitions, Enclosures and Barriers." In Noise Control, 279–342. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-7.

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Hansen, Colin H., and Kristy L. Hansen. "Sound in Rooms." In Noise Control, 251–78. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-6.

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Hansen, Colin H., and Kristy L. Hansen. "Muffling Devices." In Noise Control, 343–438. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9780429428876-8.

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Turner, J. D., and A. J. Pretlove. "Noise control." In Acoustics for Engineers, 174–87. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-21267-5_8.

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Spellman, Frank R., and Kathern Welsh. "Noise Control." In Safe Work Practices for Wastewater Treatment Plants, 101–9. Third edition. | Boca Raton : Taylor & Francis, CRC Press, 2017.: CRC Press, 2018. http://dx.doi.org/10.1201/9781351246989-8.

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Conference papers on the topic "Noise control"

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ATTENBOROUGH, K. "NATURAL NOISE CONTROL." In Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19553.

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NONAMI, K., QU FAN, and M. NAKANO. "ACTIVE NOISE CONTROL OF ONE-DIMENSIONAL DUCT USING H∞ CONTROL THEORY." In Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19566.

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Gillespie, Philip, Daniel Gaida, Peter Hung, Robert Kee, and Sean McLoone. "Noise resilient discrete-time cross-relation sensor characterisation." In 2016 UKACC 11th International Conference on Control (CONTROL). IEEE, 2016. http://dx.doi.org/10.1109/control.2016.7737558.

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COONEY, PA. "NOISE CONTROL AND THE USE OF THE CONTROL OF POLLUTION ACT 1974." In Local Government Noise Problems and Construction Industry Noise 1983. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/23039.

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Ursyn, Anna. "Noise control." In ACM SIGGRAPH 2004 Art gallery. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1185884.1185964.

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PROBST, W., and B. HUBER. "INTEGRATION OF AREA NOISE CONTROL PROGRAMMES INTO A CITYWIDE NOISE CONTROL STRATEGY." In Noise in London 2001. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/18490.

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CHOU, CS, and CC WU. "VIBRATION CONTROL USING COLOCATED ACTUATOR/SENSOR." In Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19337.

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BOUCHER, CC, SJ ELLIOTT, and K.-H. BAEK. "ACTIVE CONTROL OF HELICOPTER ROTOR TONES." In Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19328.

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WRIGHT, SE, and B. VUKSANOVIC. "ACTIVE CONTROL OF HIGH FREQUENCY NOISE." In Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19826.

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HONDA, S., and H. HAMADA. "ACTIVE NOISE CONTROL BASED ON ADAPTIVE PREDICTION." In Inter-Noise 1996. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/19796.

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Reports on the topic "Noise control"

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Frank. L51733 Noise Control Guidelines For Compressor Stations. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2009. http://dx.doi.org/10.55274/r0010256.

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A regulatory requirement exists for pipeline companies to maintain noise control policies and procedures for compressors and compressor stations. The Pipeline Industry requires guideline� to help individual companies to prepare such policies and procedures. This report contains a series of standardized Guidelines that could be used by gas transmission companies to develop their own specifications for noise control, applicable for new compressor package design as well as existing compressor station retrofit. The context of the work is to identify each party's responsibilities towards achieving the intended results, which should inherently lead to more successful noise control projects. The specification strategy is to maintain traditional vendor/sub-vendor roles between compressor packagers and component manufacturers. The content of the Guidelines request guaranteed acoustical performance for compressor packages, supported by field performance testing for certification of compliance to guarantees. This can be achieved during the specification process by having the purchaser establish specific design criteria, and be pre-establishing field performance testing methods.

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Deryabin, I. V. Noise-absorbing panel with bypass channels. FORGING AND STAMPING PRODUCTION. MATERIAL WORKING BY PRESSURE, August 2023. http://dx.doi.org/10.12731/kshpomd62023-deryabin.

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Noise, having a harmful effect on humans and the environment, forces us to search and conduct research on the development of new methods and means of noise protection. Currently, with an increasing increase in the flow of vehicles in residential areas, with the development of industrial production, the issue of noise control is becoming particularly relevant. A well-known and effective technical solution for blocking the transmission of acoustic energy is the use of noise-absorbing panels, both as part of various soundproof structures, and in the form of separate acoustic elements installed in noisy rooms. The article discusses the design of a noise-absorbing panel containing through bypass channels. Such a panel has a broadband sound absorption effect in frequency composition due to the use of porous sound-absorbing structures of structural materials with the integration of bypass channels into their composition.

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Tinney, Charles E., Mark N. Glauser, and Lawrence S. Ukeiley. Low Dimensional Methods for Jet Noise Control. Fort Belvoir, VA: Defense Technical Information Center, February 2005. http://dx.doi.org/10.21236/ada433156.

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Matsuoka, Takanori, Yoshinori Hirano, and Tetsuya Kawakami. Control Method of Rear Axle Gear Noise. Warrendale, PA: SAE International, September 2005. http://dx.doi.org/10.4271/2005-08-0574.

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Maidanik, G., and K. Becker. Multiple-Sprung Masses for Wideband Noise Control. Fort Belvoir, VA: Defense Technical Information Center, August 1998. http://dx.doi.org/10.21236/ada354042.

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Lewis, P. S., and S. Ellis. Active noise and vibration control for vehicular applications. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/562543.

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Bodson, Marc. Adaptive Algorithms for Active Noise and Vibration Control. Fort Belvoir, VA: Defense Technical Information Center, July 2000. http://dx.doi.org/10.21236/ada390623.

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Jay. L51710 Active Noise Silencing. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 1994. http://dx.doi.org/10.55274/r0010333.

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Abstract:

Many natural gas compressor stations which were previously located away from residential areas are now being encroached upon by surrounding building developments. Furthermore, an increased awareness of community noise issues has proved to be the impetus for investigating and developing more effective noise control methods and treatments for natural gas compressor facilities. This project investigates the feasibility of applying Active Noise Cancellation (ANC) to the exhaust of a large, internal-combustion reciprocating type engine. Large reciprocating internal combustion engines pose significant challenges for the noise control engineer. In the case of the engines employed at Tennessee Gas Pipeline Company Compressor Station 229, these engines radiate extremely low frequency exhaust noise into the surrounding environs. These engines produce discrete frequencies in the exhaust spectra with a particularly strong component at 26.5 Hz, which corresponds to the fundamental firing frequency (the 5.0 rotational order) of the engine; significant attenuation of the raw exhaust noise can be particularly difficult due to the sound power and spectral content. Traditional methods would necessitate a very large silencer in order to realize improved attenuation of the exhaust noise, relative to the existing silencer. Measurements were conducted at the error microphone location, at 1.0 meter from the exhaust outlet and at the property line. At a distance of 1.0 meter the WNCT integrated active / passive silencer yielded 84.5 dBA (92.3 dBL) while the original equipment silencer yielded 92.7 dBA (98.8 dBL). Band-limited (DC - 200 Hz) measurements were taken at the error microphone location; control off (WNCT passive - only): 109.8 dBL overall, 107.7 dBL 26.5 Hz component. With control on (WNCT active + passive) at the same position overall noise was 99.7 dBL with the 26.5 Hz component reading 89.1 dBL. Far-field A-weighted reductions were inconclusive due to the presence of other contributing noise sources possessing similar noise characteristics. Flow resistance measurements indicated that back pressure had been reduced by 95% relative to the original equipment silencer through the use of the integrated WNCT active / passive silencer.

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Murray, Nathan E., Charles Tinney, Brian Thurow, and Raj Sinha. Toward Active Control of Noise from Hot Supersonic Jets. Fort Belvoir, VA: Defense Technical Information Center, May 2012. http://dx.doi.org/10.21236/ada561763.

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Murray, Nathan E. Toward Active Control of Noise from Hot Supersonic Jets. Fort Belvoir, VA: Defense Technical Information Center, November 2012. http://dx.doi.org/10.21236/ada570494.

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