Journal articles: 'Urban Acoustics'

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Kang, Jian. "Urban Acoustics." Applied Acoustics 66, no. 2 (February 2005): 121–22. http://dx.doi.org/10.1016/j.apacoust.2004.07.006.

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Nurzyński, Jacek. "Acoustical assessment of urban residential environment." Budownictwo i Architektura 13, no. 4 (December 9, 2014): 033–40. http://dx.doi.org/10.35784/bud-arch.1690.

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The quality of urban residential environment depends on several factors, acoustical conditions are among the most important. Outdoor noise affects conditions inside the building, determines required sound insulation of external walls and the whole building envelope. It defines the comfort level on balconies and terraces, and also the quality of the closest building surroundings. Recent tendencies in spatial planning, related to the sustainable development idea, as rational land use, densification of existing built-up areas, revitalization of city centers etc, have possible far-reaching acoustical consequences. Besides, the environmental management and spatial planning present quite different attitude towards assessment of residential areas in terms of acoustics. The paper examines the problem of noise just from the perspective of spatial planning and building industry. The acoustic classification scheme is proposed for residential areas. It gives clear rules for acoustical planning and appropriate urban development policy. It is also an applicable tool for investors, developes, local authorities, and above all a final user to assess real quality and adequate value of the premises.

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Lynch, James F., and Charles C. Church. "Introduction to the Special Issue on COVID-19." Journal of the Acoustical Society of America 153, no. 1 (January 2023): 573–75. http://dx.doi.org/10.1121/10.0017033.

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The COVID-19 pandemic has been a global event affecting all aspects of human life and society, including acoustic aspects. In this Special Issue on COVID-19 and acoustics, we present 48 papers discussing the acoustical impacts of the pandemic and how we deal with it. The papers are divided into seven categories which include: physical masking and speech production, speech perception, noise, the underwater soundscape, the urban soundscape, pathogen transmissibility, and medical diagnosis.

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Tsaligopoulos, Aggelos, and Yiannis G. Matsinos. "Approaching Quietness as an Urban Sustainability Opportunity." Environments 9, no. 2 (January 18, 2022): 12. http://dx.doi.org/10.3390/environments9020012.

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Quietness in an urban environment is vital for the well-being of city residents. Nevertheless, the ambiguity in the conceptualization of the terms noise and quietness as urban acoustic planning and design objectives, has resulted in two different approaches: the soundscape approach and the noise control approach. The main purpose of this research is to supplement the existing approaches by proposing a new ecological acoustics approach in order to identify quiet areas in the city of Mytilene (Lesbos Island, North Aegean, Greece). The use of the soundscape approach involved the participation of Mytilene’s residents and the collection of subjective and objective eligibility criteria. By means of Multi-Criteria Decision Making two urban green areas were highlighted as potential quiet areas. For the noise control approach, road noise maps have been created through a commercial noise mapping software, validated by trough measurements. As a result, two areas located in the outskirts of the city were highlighted. Finally, the novel ecological acoustics approach involved acoustic recordings and the extraction of the Composite Urban Quietness Index (CUQI). The outcome of this approach converged with the soundscape approach results. Quietness, as an urban acoustic planning and design goal, could be viewed as an opportunity for ecologically sustainable urban environments.

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Jablonska, Joanna, and Roman Czajka. "CAD Tools and Computing in Architectural and Urban Acoustics." Buildings 11, no. 6 (May 30, 2021): 235. http://dx.doi.org/10.3390/buildings11060235.

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Contemporary architectural and urban planning aims at optimal development of the environment, including in terms of acoustics. As such, support with computer-aided design (CAD) tools is, nowadays, obligatory. The authors present investigation outcomes of three different CAD and computing methods extracted for the study. The scope covers different scales of considerations from architectural acoustics to the urban level, which relates to the standard architect’s commissions field. The described approaches are applicable for both academics and professionals in the broadly understood building industry There were analysed and synthesized experiences from the use of two-dimensional and three-dimensional simulations, computing based on standardized formulas, and an acoustic meter (here: the SVAN 979 for RT60, LAeq measurement). The article concludes with an assessment, which shows possible uses of methods and confirmations of their usability.

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Kumar, Sanjay, and Heow Lee. "The Present and Future Role of Acoustic Metamaterials for Architectural and Urban Noise Mitigations." Acoustics 1, no. 3 (August 1, 2019): 590–607. http://dx.doi.org/10.3390/acoustics1030035.

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Owing to a steep rise in urban population, there has been a continuous growth in construction of buildings, public or private transport like cars, motorbikes, trains, and planes at a global level. Hence, urban noise has become a major issue affecting the health and quality of human life. In the current environmental scenario, architectural acoustics has been directed towards controlling and manipulating sound waves at a desired level. Structural engineers and designers are moving towards green technologies, which may help improve the overall comfort level of residents. A variety of conventional sound absorbing materials are being used to reduce noise, but attenuation of low-frequency noise still remains a challenge. Recently, acoustic metamaterials that enable low-frequency sound manipulation, mitigation, and control have been widely used for architectural acoustics and traffic noise mitigation. This review article provides an overview of the role of acoustic metamaterials for architectural acoustics and road noise mitigation applications. The current challenges and prominent future directions in the field are also highlighted.

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Sygulska, Anna. "SOUND IN URBAN PLANNING – SELECTED ISSUES." Space&FORM 2021, no. 47 (September 9, 2021): 165–78. http://dx.doi.org/10.21005/pif.2021.47.c-04.

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The issue of acoustics is still underappreciated both in interior design in public utility facilities and in urbanized spaces. As noise pollution is on the rise, acoustic ecology is a vital part of responsible urban planning. The article explores the issue of sound in an open space in terms of noise protection, but its primary goal is to discuss it in the context of shaping a soundscape consciously. Finally, the article points out that it is crucial to protect soundscape as cultural heritage.

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Kawazoe, Yoshiyuki, and Hiroyuki Tanabe. "Acoustic Analysis for Urban Design Evaluation." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 8 (November 30, 2023): 174–84. http://dx.doi.org/10.3397/in_2023_0043.

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Japanese townscapes have changed historically, and those changes have been inherited as distinctive streetscapes in various districts. This is a study that analyzes the characteristics of landscapes in each district based not on visual characteristics but on acoustic characteristics. Specifically, we analyzed the characteristics of each reverberation time and frequency in areas with historical landscapes such as Tsukishima and Nippori in Tokyo. We were able to grasp the finishing materials and architectural forms as acoustics, and were able to capture the characteristics of the street spaces in each city. We were able to verify the possibility as a method for evaluating urban design.

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Chambers, Derrick, Peiyao Li, Harpreet Sethi, and Jeffery Shragge. "Monitoring industrial acoustics with distributed acoustic sensing." Journal of the Acoustical Society of America 151, no. 4 (April 2022): A58. http://dx.doi.org/10.1121/10.0010648.

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True-phase distributed acoustic sensing (DAS), a technique which uses low-power laser pulses to monitor along-fiber strain in optical cable, has proven useful in many geophysical research areas, including down-hole monitoring in oil/gas extraction, near-surface characterization, detecting and locating regional and global earthquakes, urban monitoring. Most of the geophysical applications to date, however, have focused on recording elastic waves propagating through solid media. In this work, we explore the response of DAS for recording acoustic propagation in air, as a function of fiber type and configuration, over frequency bands useful for monitoring industrial environments. We also present methods of creating simple fiber-composite sensing units for improving sensitivity, and strategies for combining solid-earth and acoustic monitoring to create an effective seismoacoustic array with a single DAS interrogator.

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Novák, Josef. "The theoretical basis of urban acoustics." Applied Acoustics 18, no. 5 (1985): 381–83. http://dx.doi.org/10.1016/0003-682x(85)90056-8.

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Hornikx, Maarten. "Ten questions concerning computational urban acoustics." Building and Environment 106 (September 2016): 409–21. http://dx.doi.org/10.1016/j.buildenv.2016.06.028.

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Johnson, Simon D. "Estimation methodology for three-dimensional acoustic modeling: Predicting surf noise soundscapes in coastal urban environments." Journal of the Acoustical Society of America 154, no. 4_supplement (October 1, 2023): A226. http://dx.doi.org/10.1121/10.0023359.

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This research develops an estimation methodology for coastal surf noise soundscapes for implementation in three-dimensional acoustic modeling to improve communication of acoustic design and for assessment with sustainability, wellness and acoustic standards. As sustainability standards include more parameters relating to soundscapes, it is becoming increasing important to develop methods of communicating acoustics to designers in the built environment. Three-dimensional acoustic modeling provides a graphical tool for designers to engage with and understand the impacts multidisciplinary engineering and design decisions have on the soundscape of different parts of a project. As a nation with many coastal urban environments, the view, scents and sounds are all marketing and wellness points for residential and commercial projects. The methodology includes consideration of typical software-agnostic three-dimensional modeling inputs, capabilities and graphical outputs as well as the primary variables that influence measurement and prediction of coastal surf noise in relation to the constant environmental noise. Coast surf noise measurements have been collected and undertaken as part of this work and the data within the method may be updated for most locally measured data. This research aims to enhance the demonstration of soundscapes, facilitating more informed decision-making fostering sustainable development in acoustics, engineering and design.

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Meissner, Mirosław. "In Memoriam. Elżbieta Maria Walerian, Ph.D., D.Sc." Archives of Acoustics 39, no. 1 (March 1, 2015): 153–54. http://dx.doi.org/10.2478/aoa-2014-0017.

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Abstract Elżbieta M. Walerian, Ph.D., D.Sc., a retired employee of the Institute of Fundamental Technological Research of the Polish Academy of Sciences (IPPT PAN), passed away after a serious illness, on the 26th December 2013. She was one of the scientific leaders in the Section of Environmental Acoustics of IPPT PAN and her career, educational and organizational activities were inseparably linked with the acoustics. Elżbieta Walerian was born on August 9th 1950 in Poznań. She graduated from the Faculty of Mathematics, Physics and Chemistry of the Adam Mickiewicz University in Poznań, receiving her Master of Science degree in the environmental acoustics in 1973. Five years later, under the supervision of Professor Ignacy Malecki, she obtained her PhD title, in the physical acoustics, in IPPT PAN in Warsaw. In 1979 she began working at the Section of Environmental Acoustics of IPPT PAN, where she dealt with the diffraction of acoustic waves and a description of the sound field produced by vehicles moving in an urban area.

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Dreier, Christian, and Michael Vorländer. "Vehicle pass-by noise auralization in a virtual urban environment." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 6 (February 1, 2023): 1907–15. http://dx.doi.org/10.3397/in_2022_0269.

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Auralization is a suitable method for the subjective evaluation of environmental noise. Due to its complexity, the plausible and immersive acoustic representation of outdoor scenarios in urban environments is an ongoing field of research. This work presents the design and implementation of a vehicle pass-by noise model with application in a real-time environmental noise auralization. The pass-by noise sources are implemented by procedural audio syntheses of engine and road-tyre noise with according directivities. In an audiovisual demonstration, the resulting source model is auralized considering the sound propagation phenomena in a virtual urban environment using the Virtual Acoustics framework.

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Li, Jing, and Nan Zhang. "Numerical Simulation of the Vibration and Structure-Borne Noise of the Viaduct." Applied Mechanics and Materials 226-228 (November 2012): 401–5. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.401.

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Based on the combination of finite element software ANSYS and acoustics software LMS Virtual.Lab Acoustics, this paper makes an analysis of the Vibration and sound radiation of the viaduct of urban rail transit. First of all, transient dynamic analysis of three-dimensional model of box girder was made in ANSYS, with train passing bridge simulated as a moving load or a moving mass-spring system. Then vibration displacement response obtained is taken as boundary condition of outer sound field, which can achieve accurate acoustic response in Virtual.Lab Acoustics. According to comparing the results of the two different models, we can draw that the noise pressure with the moving mass-spring system is higher than the other, and the noise pressure range is from 70 to 95 in decibels. Using the transient boundary element module of LMS Virtual.Lab Acoustics can solve engineering problems in time domain, with simulating the vibration properly.

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Bort, Inès de, and Benoit Beckers. "Impact of multiple reflections on urban acoustics." Journal of Physics: Conference Series 2042, no. 1 (November 1, 2021): 012052. http://dx.doi.org/10.1088/1742-6596/2042/1/012052.

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Abstract Understanding how the urban form contributes to noise is important for the successful acoustic design of cities. The amplification of sound is mainly due to the multiple reflections that occur between the high and parallel walls of urban canyons. This study explores the use of ray tracing at the urban scale through the measurement and simulation of three configurations. These are referred to as “1D”, “2D” and “3D”. Impulse response measurements performed at points located on the top of the façades show an increase of 6 dB for the “2D” case and 11 dB for the “3D” case. These results are consistent with ray tracing simulations. This kind of simulation is useful to determine the influence of the street aspect ratio on the sound level. Since specular reflections are related to geometry, a spatialized representation is proposed and discussed.

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Wilson, D. Keith, Aaron C. Meyer, Matthew J. Kamrath, Rachel A. Romond, Cody M. Best, Chris L. Pettit, and Vladimir E. Ostashev. "Bayesian source localization in an urban environment using scattered signal distributions." Journal of the Acoustical Society of America 154, no. 4_supplement (October 1, 2023): A305. http://dx.doi.org/10.1121/10.0023613.

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Acoustic signals propagating in urban environments are influenced by rough-surface scattering, multipath reflections, and diffraction. Conventional source localization algorithms often perform poorly when these effects are present. Bayesian approaches, however, are particularly well suited to incorporating physics-based statistical models for the signal propagation. Previously, we found that the complex Wishart distribution, which describes fully saturated scattered signals across a network of receivers, can be readily employed in a Bayesian framework. This approach is very general, as it includes source triangulation and trilateration as special cases. Feasibility was initially demonstrated using simulations. In the present work, we describe an experimental demonstration of Bayesian source localization using data recorded in an urban-like environment. The experimental data were collected as part of a NATO urban acoustics-seismics experiment in Walenstadt, Switzerland, in May 2023. A network of four acoustic nodes, each with 12 microphones, was deployed and recorded emissions from a variety of sources. Initial results from the data processing and localization are described.

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Chen, Yong Guang, Wei Ming Cai, and Su Xiong Jian. "Simulation Analysis of Sound Insulation for Urban Traffic Noise." Applied Mechanics and Materials 684 (October 2014): 213–18. http://dx.doi.org/10.4028/www.scientific.net/amm.684.213.

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The sound barrier is one of the effective and economical engineering facilities to control the urban traffic noise. The characteristics of urban traffic noise are analyzed both in time-domain and frequency-domain. Then the noise reduction theory of sound barrier is introduced in detail. The determination of the influence factors in insertion loss is researched emphatically. The main procedure of the acoustics design of sound barrier is also systematically studied. According to the main design process of the acoustics design of sound barrier, simulation confirmation is conducted by acoustics software to confirm the noise reduction performance of the barrier.

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Huaquín, Mario. "ACOUSTIC PLANNING OF URBAN SPACE." Akustika 32 (March 1, 2019): 316–24. http://dx.doi.org/10.36336/akustika201932316.

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Urban planning requires multiple instruments to organize a city. The growth process requires adapt to political, economic, technological changes, incorporating urban factors, architectural design concepts, and also acoustic, for public and private space more friendly with the environment. Noise as pollutant of public and private space, generated mainly by vehicular traffic, increases noise by the presence of buildings on both sides of streets, depending on its shape, materiality, height, and distance between facades. Direct sound when reflected in facades returns as a secondary source. These multiple reflections added to the direct sound, produce a "residual noise". Then time variable, when the passage of vehicles is continuous, an observer can define a linear source in constant generation. The persistence of the noise can reach 3 seconds. Original source, residual noise and the persistence of noise over time its the phenomenon called environmental noise, associated with the design and shape of cities.

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Heimes, Anne, and Michael Vorlaender. "A new approach for auralization of scattering in urban spaces." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A183. http://dx.doi.org/10.1121/10.0018594.

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Absorption and scattering coefficients of surfaces are crucial for acoustic propagation simulations. The scattering coefficient according to ISO 17497-1, however, is the most uncertain standard metric applied in geometrical acoustics. In outdoor sound propagation simulation, the amount of scattered energy is crucial for the sound immission at the receiver. Standard random-incidence scattering coefficients are in use but with uncertain results. In contrast, specific reflection patterns are neither available nor implemented in simulation algorithms. In this paper, the scattering coefficient concept will be applied for building facades in an urban test environment. Furthermore, results from a new angle-dependent specific scattering metric, including sound steering and retro-reflection, will be compared with results from purely specular or mixed specular/random-incidence datasets.

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Sakagami, Kimihiro, Fumiaki Satoh, and Akira Omoto. "Revisiting Acoustics Education Using Mobile Devices to Learn Urban Acoustic Environments: Recent Issues on Current Devices and Applications." Urban Science 3, no. 3 (July 17, 2019): 73. http://dx.doi.org/10.3390/urbansci3030073.

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In this paper, we revisit the acoustics education program using mobile devices to better understand urban environments. We begin with a summary of our past projects to demonstrate a model case of the concept. In these projects, the output was mainly supposed to be a noise map with measured sound pressure levels (SPLs) and sound spectra. This methodology can obviously be applied to larger-scale urban studies. Including measured sound spectra can be another advantage. Next, current problems in measurement accuracy due to recent device developments are explained and the required examinations are stated. Finally, the accuracy of the current versions of the applications as well as recently available devices are discussed. The results of this study provide information regarding the measurement accuracy of mobile devices, and some suggestions for their practical use are given, which are also useful for additional studies pertaining to the urban acoustic environment.

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Alsina-Pagès, Rosa Ma, Gerardo José Ginovart-Panisello, Marc Freixes, and Antonella Radicchi. "A Soundwalk in the heart of Poblenou superblock in Barcelona: Preliminary study of the acoustic events." Noise Mapping 8, no. 1 (January 1, 2021): 207–16. http://dx.doi.org/10.1515/noise-2021-0016.

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Abstract The Poblenou Superblock, in Barcelona, is a crucial element in the development of the new city-planning within the framework of the Superblock (Superilles) concept, whose principal aim is to recover the cultural, economic and social exchanges once produced in streets and squares. People living in urban areas need a lower traffic density, more green spaces and cleaner air in order to restore the previous uses of public spaces in their day-today lives. The urban actions conducted at this Superblock to change its uses were completed about 3 years ago, and neighbours and workers have already taken over the new spaces. In an interdisciplinary work on urban planning and acoustics, we detail the preliminary results of the acoustic events found in the recordings in a soundwalk in the heart of the Poblenou Superblock. Fifteen people evaluate and record sound fragments with the Hush City App application, in order to establish comparisons between the different points of the route, observe the spaces arranged for people and perceive the soundscape. Meanwhile, several acoustic technicians record 5-min long audios in the different stops designed for the soundwalk. The points chosen to make the recordings are very different from each other, some of them in the middle of gardens and others are on pacific streets and finally, we also wanted to include Superblock borders where the traffic is still very present. The results of our study were promising and have encouraged us to further investigate acoustics events in superblocks and include all the perceptual information provided by the Hush City App.

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Pierucci, Mauro. "Urban Forest Acoustics Urban Forest Acoustics , Voichita Bucur , Springer, New York, 2006. $129.00 (181 pp.). ISBN 3-540-30783-4." Physics Today 60, no. 2 (February 2007): 66. http://dx.doi.org/10.1063/1.2711642.

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Benocci, Roberto, Alessandro Bisceglie, Fabio Angelini, Giovanni Zambon, Giovanni Brambilla, and H. Eduardo Roman. "Audio recording analysis in an urban park of the city of Milan (Italy)." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 3 (August 1, 2021): 3247–58. http://dx.doi.org/10.3397/in-2021-2350.

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A noise monitoring campaign has been performed in an urban park of Milan (Italy) called Parco Nord. The area of study is a large peri-urban park in the northern part of the city, characterized by wooded land rich in biodiversity and exposed to different sources and degrees of anthropogenic disturbances, such as road traffic noise and artificial light. The acoustic environment is rather complex due to the contemporary presence of different noise sources, leading to the difficult task of discriminating them in audio data. Due to these multifactorial characteristics, we evaluated different eco-acoustic indices in the attempt to derive a methodology to evaluate the potential of sound ecology indicators to discriminate the different types of sounds present in medium-large urban parks. Time series of about two-week recordings have been transformed into eco-acoustics indices and statistically analysed. The results show a redistribution of recordings into each cluster associated with different sound components and different period of the day. This allowed the identification of different degree of biophonic and/or anthropogenic activities throughout the day.

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Gulsrud, Tim. "Acoustics improvements to an outdoor music venue in an urban setting: A case study." Journal of the Acoustical Society of America 151, no. 4 (April 2022): A26. http://dx.doi.org/10.1121/10.0010540.

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This paper presents a case study of acoustics improvements made to the Number 38 Social Hall located in Denver's RiNo Arts District. The venue includes an outdoor music stage which is close to adjacent residential buildings, resulting in concerns about noise impact on the residences. During the summer of 2021, improvements were made to the stage area to reduce these noise impacts. We will review the changes made to the construction of the stage area, discuss sound level measurements made both before and after the improvements, and comment on the overall acoustical results of the improvements.

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Moraes, Roberto Barreto de, and Deise Miranda Vianna. "The articulation between the STS Approach and Environmental Education for the contextualization of Acoustics in Physics Teaching." Journal of Physics: Conference Series 2727, no. 1 (March 1, 2024): 012019. http://dx.doi.org/10.1088/1742-6596/2727/1/012019.

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Abstract Noise pollution presents itself in an invisible, dangerous, and permanent way, with long-lasting consequences. Acoustic discomfort within the school environment affects not only human health but also the quality of verbal communication and student performance. An appropriate acoustic environment contributes to the improvement of the teaching and learning process in addition to enhancing the interpersonal relationships involved in the educational process. Moreover, it is important to introduce acoustics-related subjects, such as environmental noise, into high school science and physics syllabi. As urban noise is a global concern and scope, students may face the need to make decisions related to environmental practices in their future lives, such as those concerning comfortable sound levels. Articulating the STS Approach with Environmental Education, we seek to combine the interdisciplinary content of Acoustics with an environmental awareness that goes beyond mere conservationist reductionism. In addition to the mandatory curricular knowledge, STS Education adopts a scientific and technological education based on a social construction that is culturally and socially contextualized.

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Brown, A. L., and K. C. Lam. "Urban noise surveys." Applied Acoustics 20, no. 1 (1987): 23–39. http://dx.doi.org/10.1016/0003-682x(87)90081-8.

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Luzzi, Sergio, and Andrey Vasilyev. "ACOUSTICAL MONITORING, PLANNING AND DESIGN OF URBAN TERRITORIES." Akustika 34 (November 1, 2019): 152–56. http://dx.doi.org/10.36336/akustika201934152.

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The problems connected with acoustical monitoring, planning and design of urban territories are considered. Approaches to acoustical monitoring of urban territories are described. Peculiarities of acoustical planning and design of urban territories are described taking to account European and Russian experience. The holistic approach to planning and acoustical design of landscapes is suggested. Smart solutions are considered as a part of the global comfort scheme: smart urban planning shows various connections with smart noise action plans. Examples of smart solutions are presented. The results of work are allowing to make more comfortable acoustical environment in urban territories and to reduce negative impact of noise to the human health more efficiently.

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Okoye, Peter Uchenna, Kevin Chuks Okolie, Christian Ifeanyi Ohaedeghasi, and Chukwuemeka Ngwu. "Ecomusicology: A socioecological dimension towards acoustically sustainable residential buildings." Sustinere: Journal of Environment and Sustainability 4, no. 3 (December 31, 2020): 172–88. http://dx.doi.org/10.22515/sustinere.jes.v4i3.123.

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This study examined the socioecological roles of music sounds towards achieving acoustically sustainable residential building. The study adopted a survey research approach where questionnaires were distributed to the occupants of different types of residential buildings in three urban cities of Anambra State Nigeria. The survey data were analysed using Statistical Package for the Social Science (SPSS) Software. The results revealed that music plays significant roles towards acoustically sustainable building performance with the overall average mean score index of 4.36 and a range of 3.64 to 4.87. But the three most outstanding roles played by music towards acoustically sustainable building performance were: Enabling pleasant sound environment (4.87), improving quality of relaxation and resting (4.83), and increasing acoustic comfort and satisfaction (4.79). The result of one-way ANOVA revealed that music sounds significantly influence acoustical sustainability performance of residential buildings (p-value (.000) < α (0.05); F-ratio (148.377) > F-critical (3.020)); and that there was no significance difference between opinions of residents of the three urban cities in this regard (p-value (0.713) > α (0.05); F-ratio (0.338) < F-critical (3.020)). This study therefore, canvassed for integration of music principles and acoustics into sustainable building design processes as a way of achieving a sustainable building.

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Slabbekoorn, Hans, Pamela Yeh, and Kimberly Hunt. "Sound Transmission and Song Divergence: A Comparison of Urban and Forest Acoustics." Condor 109, no. 1 (February 1, 2007): 67–78. http://dx.doi.org/10.1093/condor/109.1.67.

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AbstractAbstractDegradation of acoustic signals during transmission presents a challenging selection pressure for animals dependent on vocal communication. Sound transmission properties differ among habitats and may drive the evolution of vocal signals in different directions. Urban habitat is expanding worldwide and an increasing number of species, including many birds, must now communicate around buildings and over concrete. Urban habitats are evolutionarily new, although to some extent they may acoustically resemble rocky habitat such as cliffs and canyons. Neither urban nor these natural habitats have been studied in any detail for the selection pressure they may exert on animal communication. Dark-eyed Juncos (Junco hyemalis) commonly inhabit montane pine forests across North America, but for about 25 years an isolated population has been successfully breeding in an urban environment in southern California. We investigated potentially divergent selection pressures on junco songs, using sound transmission experiments with artificial sound stimuli, in natural forest habitat and in this urban habitat. Transmission properties differed significantly, resulting in tails of reflected sound with gradually declining amplitude in the forest and in multiple discrete echoes in the urban environment. We expected environmental selection in urban habitat to favor shorter songs with higher frequencies and slower trill rates. Despite the presence of relatively short urban songs, there was no significant shortening overall. There were also no differences in trill rates, but we did find a significantly higher minimum frequency in the urban junco population compared to three of four forest populations. Although the pattern of song divergence was not consistent and it is difficult to draw firm conclusions from this single urban population, our transmission results suggest that echoes could be important in shaping urban birdsong.

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Nathaniel, Steve. "Virginia Woolf, Anechoic Architecture, and the Acoustic Hermeneutic." Novel 54, no. 1 (May 1, 2021): 1–18. http://dx.doi.org/10.1215/00295132-8868743.

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Abstract This article describes Virginia Woolf's preoccupation with acoustics and its relationship both to her writing process and to the development of sensibility that she narrativizes in The Waves. It situates Woolf's theoretical and fictional models of listening with respect to the rising science of architectural acoustics and to the social imperative to control sound in urban spaces. It argues that Woolf responds to the psychological and social exigencies of modern sound by integrating textual and architectural listening modes in an acoustic hermeneutic: a listening practice common to the objects of architecture and text, one that accommodates both scientific and aesthetic ends. The acoustic hermeneutic marks the convergence of oft-estranged listening practices—one that apprehends the silent materiality of the text as if it were an audible room and, conversely, one that apprehends architecture with the auditory imagination traditionally exerted toward literature. While the article explores Woolf's particular invocations of auditory science in her formal innovation, it also aims toward a widely applicable critical approach to the inaudibilities of the novel.

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NIKOLOV, N., D. BENOV, D. BENOVA, A. DENCHEVA, and I. L. SHUBIN. "Application of the Monte Carlo Method in Urban Acoustics." Zhilishchnoe Stroitel'stvo, no. 7 (2019): 25–34. http://dx.doi.org/10.31659/0044-4472-2019-7-25-34.

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Miller, Gregory A., and Daniel R. Raichel. "Modeling urban noise pollution as an architectural acoustics problem." Journal of the Acoustical Society of America 97, no. 5 (May 1995): 3392. http://dx.doi.org/10.1121/1.412577.

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Jongman, Allard, Wendy Herd, Mohammad Al-Masri, Joan Sereno, and Sonja Combest. "Acoustics and perception of emphasis in Urban Jordanian Arabic." Journal of Phonetics 39, no. 1 (January 2011): 85–95. http://dx.doi.org/10.1016/j.wocn.2010.11.007.

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Tinney, Charles, John Valdez, and Irene Zhao. "The acoustics of multirotor platforms for urban air mobility." Journal of the Acoustical Society of America 154, no. 4_supplement (October 1, 2023): A292. http://dx.doi.org/10.1121/10.0023567.

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The sound field of hovering rotors has generated tremendous interest in recent years with the prospect of urban air mobility platforms comprising eVTOL type designs. In this presentation, we will review a number of key advancements that have been made with regard to an understanding of the sound field produced by multirotor systems in hover and how it relates to the aerodynamic performance of the rotor. Much of this work is based on laboratory-scale measurements of different configurations starting with multirotor drones comprising quad-copter, hexacopter, and even octocopter arrangements (Tinney and Sirohi, AIAA J., 2018) followed by stacked corotating rotors (Valdez and Tinney, AIAA J., 2022) where the trade-space based on stacking distance, index and angle and rotor speed are evaluated. Of particular interest is the constructive and destructive interference of sound waves from neighboring rotors which augment the first few fundamental rotor harmonics. Methods for characterizing the first few rotor harmonics based on POD-based Vold-Kalman order tracking filters (Tinney etal., Int. J. Aeroacoust., 2023) is presented as well as methods for collapsing the high frequency rotor broadband noise using a moving source model (Tinney et al., AIAA Paper 2023-3222).

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Tashakkor, Shahla, Atefeh Chamani, Mozhgan Ahmadi Nadoushan, and Minoo Moshtaghie. "Acoustics in urban parks: Does the structure of narrow urban parks matter in designing a calmer urban landscape?" Frontiers of Earth Science 14, no. 3 (September 2020): 512–21. http://dx.doi.org/10.1007/s11707-020-0816-2.

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Baes, Hans Matthew, Herve Sandja Tchamba, Telha Abdulbasit, Wagdy Mahmoud, and Max Denis. "Classifying urban areas from learned acoustic and seismic data." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A46. http://dx.doi.org/10.1121/10.0018103.

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In this work, a deep transfer learning algorithm is used to classify different urban areas from acoustic and seismic data. The deep transfer learning model combines Google’s deep learning model AlexNet. Measurements of acoustic and seismic ambient noise were conducted in an urban environment. The urban acoustic and seismic measurements are heavily influenced by traffic noise but exhibit more variation with respect to urban location due to the influence of subsurface conditions. A K-means clustering analysis is employed on the acoustic and seismic spectrogram to classify the urban areas. The results demonstrate that seismic and acoustic data can have similar cluster centroid locations in the frequency band of 4 Hz–10 Hz. The transfer learning results will be presented and discussed.

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Sakagami, Kimihiro, Fumiaki Satoh, and Akira Omoto. "Use of Mobile Devices with Multifunctional Sound Level Measurement Applications: Some Experiences for Urban Acoustics Education in Primary and Secondary Schools." Urban Science 3, no. 4 (December 9, 2019): 111. http://dx.doi.org/10.3390/urbansci3040111.

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Geo-referenced sound data are often used in the field of acoustics education to learn about the urban acoustic environment. Simple soundwalks and sound collections are also employed, in which acquiring additional information such as visual data, recorded sound data, and GPS location data are helpful to produce a map with sound data and sound collection and to carry out more profound discussions in educational activities. In order to enrich these acoustic educational and environmental survey activities with a simple tool, the use of multifunctional sound-pressure level (SPL) measurement applications with mobile devices are proposed. Some experiences of combined activities of the above methods using the applications and mobile devices are reported in this paper. In this study, applications for SPL measurements, which record GPS location data, sound, photo, and video during measurements, were used to produce geo-referenced sound data. First, the accuracy of the applications was checked and we found them to have reasonable accuracy when used with iOS devices; for example, the averaged error was less than 1.5 dB(A) with iPhone XS. Next, they were actually used in a simple soundwalk-like field survey and the resulting geo-referenced sound data were presented to discuss the merits and demerits of each application. Overall, the applications used in this work were found to be useful; for example, recorded sound allowed us to check the main sound source and to carry out discussions using collected sound samples later, and photos and videos allowed us to grasp the impressions and situations around the measuring points. Therefore, these multifunctional sound level meter (SLM) applications can be effectively used for various purposes, including acoustics education for learning about urban acoustic environments.

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Germanova, Tatyana. "IMPORTANT FACTOR IN GENERATING ACOUSTIC ENVIRONMENT WITHIN THE TERRITORIES ADJACENT TO HIGHWAYS." Akustika, VOLUME 41 (2021): 79–82. http://dx.doi.org/10.36336/akustika20214179.

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As things stand today, most of acoustic studies have been focused on predicting the pattern of noise and analyzing the related factors such as various types of noise protection installations, noise transmission, housing density, building position and landscaping. At the same time, the acoustic environment studies are directly linked to the main urban structures (the so-called urban morphology) comprising the coordinated open spaces, buildings and residential areas. An important element of assessing the expected level of the environment acoustic pollution appears to be the experience of implementing planned and project documents. The given article deals with the problem of street lines [1] (red lines). These lines became widely used at designing residential and public buildings in areas adjacent to highways, urban and city-wide roads. Due to this fact the legal and technical aspects in transforming the area introduce certain difficulties. The presented article is concerned with the circumstances of applying street (red) lines in urban transportation area from the viewpoint of its acoustic impact on adjacent territories.

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Bijsterveld, Karin. "Ears-on Exhibitions." Public Historian 37, no. 4 (November 1, 2015): 73–90. http://dx.doi.org/10.1525/tph.2015.37.4.73.

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Between March 2013 and November 2014, the Amsterdam Museum had an installation that enabled visitors to compare a recent soundscape recording of the Dam Square with simulations of how the Dam sounded in 1895 and 1935. Constructing these simulations involved virtual acoustics software, recordings of historical artifacts, and research into the urban past. This paper critically discusses how the installation was made and received by comparing the acoustic authenticity ideal behind it with the aims of the early music movement. It concludes by reviewing alternative ways of using sound in history museums by reflecting on issues of framing, identification, sensory instruction, and embodiment.

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Dannemann Dugick, Fransiska, Nora Wynn, Elijah Bird, Daniel Bowman, Melissa Wright, Douglas Seastrand, and Jonathan Lees. "The Las Vegas infrasound array: Long term deployments for the characterization of urban environments." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A165. http://dx.doi.org/10.1121/10.0015901.

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The Las Vegas Infrasound Array (LVIA) is a network of eleven infrasound sensors deployed from November 2019 through September 2022. While ambient infrasound noise in high and low-noise rural environments has been well characterized, little attention has focused on similar characterization in urban areas with presumed higher background noise levels. The LVIA long-term deployment provides an unprecedented opportunity to study urban infrasound and low frequency audio (20–500 Hz). In addition, large scale shutdowns due to the COVID-19 pandemic provide the ability to discriminate between background noise sources as closures reduced human-generated noise while natural signals remained stable. Within this presentation we will provide an overview of the LVIA installation, focusing on data quality. In addition, we will discuss comprehensive background noise models in urban regions, focusing on presenting probability density functions (PDFs) and median, 5th percentile, and 95th percentile amplitude values to evaluate variations in frequency and amplitude. We will summarize observed trends in background noise over time, highlighting sharp declines in acoustic power following COVID-19 shutdowns. Both sets of analyses will be combined to evaluate periodicities in urban acoustics throughout the city of Las Vegas. [ SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.]

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An, Justin, Wagdy Mahmoud, and Max Denis. "Acoustic energy harvesting of ambient noise urban environment." Journal of the Acoustical Society of America 153, no. 3_supplement (March 1, 2023): A46. http://dx.doi.org/10.1121/10.0018104.

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In this work, the efficiency of engineered materials for converting ambient acoustic noise into electrical power is investigated. Of particular interest are 3D-printed acoustic metamaterials. Initial investigation will focus on sonic crystals acoustic metamaterials. Numerical simulations of the acoustic wave and sonic crystals interaction will be conducted. Of particular interests are the strong scattering interactions. 3D-printed samples will be measured and tested. The simulation and measurement results will be presented and discussed.

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Taghipour, Armin, Arnthrudur Gisladottir, Francesco Aletta, Matthias Bürgin, Mohadeseh Rezaei, and Ulrike Sturm. "Improved acoustics for semi-enclosed spaces in the proximity of residential buildings." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 6 (February 1, 2023): 1141–52. http://dx.doi.org/10.3397/in_2022_0158.

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Continuous urban densification exacerbates acoustic challenges for residents of housing complexes. They are confronted with higher noise immission from railway, road traffic, construction, as well as louder neighborhood acoustic environments. Thereby, not only noise immission indoors is associated with stress, annoyance, and sleep disturbance, but also the immediate outdoor living environment (e.g., courtyards, private gardens, and playgrounds, etc.) can be acoustically unpleasant and annoying. This non-exhaustive narrative review paper elaborates on the role of a number of design parameters on improving the quality of the outdoor soundscape of housing complexes: architectural and morphological design, facade material characteristics, balconies, greenery, ground, background sounds, and several factors concerning quality of sounds (e.g., multisensory perception, holistic design, the relevance of space, context, social factors, co-creation, etc.). It mainly covers literature including both acoustical (e.g., sound pressure level and room acoustical parameters) and human/perceptual (e.g., comfort and annoyance) factors. A series of recommendations are presented here as to how the semi-enclosed outdoor spaces in the proximity of residential complexes can be acoustically improved.

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Brito, Luan de Jesus Matos de, and Paula Vitória Silva. "Passive bioacoustic monitoring as a method to investigate noise pollution in urban parks." Brazilian Journal of Science 3, no. 1 (August 12, 2023): 96–101. http://dx.doi.org/10.14295/bjs.v3i1.440.

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The acoustic landscape of a place is formed by biophony, anthropophony and geophony. Biophony comprises the sounds produced by living beings, mainly animals during their communications; geophony consists of the sounds of the geophysical environment, like a river, the rain and waterfalls. In this case study, we evaluated the effectiveness of passive bioacoustic monitoring in detecting anthropogenic pollution in an urban park in Belo Horizonte, Brazil. We used the Song Meter recorder model SM2+ from the Wildlife Acoustics, the recorders were configured to receive sounds of up to 20 Hz. Each recorder was fixed in trees 1.5 m above the ground and 2 microphones were used in each of them. The collected data were submitted to the Generalized Linear Model Test (GLMM), which resulted in a strong influence of anthropic noises on the birds' vocalization. Our results demonstrate the effectiveness of the method and point to the need for the development of public policies to mitigate the effects of noise pollution in urban parks.

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Pham, Tien. "Acoustic sensing for urban battlefield applications." Journal of the Acoustical Society of America 127, no. 3 (March 2010): 1779. http://dx.doi.org/10.1121/1.3383905.

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Carey, William M. "Adaptive Methods in Underwater Acoustics edited by Heinz G. Urban." Journal of the Acoustical Society of America 81, no. 6 (June 1987): 1999–2000. http://dx.doi.org/10.1121/1.394732.

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Landa, Juvanely Y., and Kimberly A. Riegel. "Urban noise." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A189. http://dx.doi.org/10.1121/10.0015984.

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People in urban areas are exposed to high noise levels, leading to an increased number of health issues. A mobile phone application called Auditive, was developed to allow the user to report health history, sound level annoyance, and record sound levels on their mobile phones. This allows for real-time sound level data to be directly correlated with the annoyance response. The data recorded with the auditive app provides opportunities for researchers to find correlations between noise exposure, health, and annoyance. A major concern with mobile phone recorded noise is the accuracy of the absolute sound levels without calibration. This study is focused on calibrating mobile phones to provide more accurate data. Two methods for calibration were considered. Technique one calibrates, using the same correction for each type of phone. MATLAB was used to generate pink noise at different sound levels to test a variety of iPhone models. The correction for each frequency level ranging from 63 Hz to 8000 Hz, was determined. Technique two calibrated individual phones. We tested consistent sounds that allow Auditive users to calibrate their phones. These two different techniques will be compared, to establish the best way to calibrate different mobile phones.

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Smirnov, Vladimir V., and Dmitriy N. Sklyar. "Development of methodological approaches to conducting monitoring of traffic noise and its assessment using acoustic modelling methods." Hygiene and sanitation 101, no. 8 (September 14, 2022): 872–77. http://dx.doi.org/10.47470/0016-9900-2022-101-8-872-877.

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Introduction. At present, considerable attention is paid to the problems of noise pollution in urban and rural settlements. Transport is the main source of noise in the structure of complaints about unfavourable living conditions in dense urban areas. Material and methods. Materials for selecting the most significant criteria or grouping the objects of surveillance were in situ instrumental measurements of noise levels and the results of acoustic calculations obtained during the processing of an acoustic model. In situ measurements of noise levels were made in St. Petersburg on the territory of residential areas. The acoustic models were built using the software “Acoustics 3D”. Noise source parameters were set according to the data obtained during field measurements. Results. During the development of methodological approaches, the criteria for grouping the objects of surveillance were defined. In accordance with the selected criteria, were formed 8 surveillance groups. As a result of the measurements, the difference in noise levels between the typical points within the group was no found to exceed 2 dB. To verify the developed criteria here acoustic modelling was performed. Limitations. On the territory of St. Petersburg over the year, study included one thousand measurements. Conclusion. The developed criteria make it possible to expand the list of control objects while reducing labour costs for conducting socio-hygienic monitoring, while maintaining the objectivity of the results of the acoustic pollution levels of the territory.

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Llorca-Bofí, Josep, Christian Dreier, Jonas Heck, and Michael Vorländer. "Urban Sound Auralization and Visualization Framework—Case Study at IHTApark." Sustainability 14, no. 4 (February 10, 2022): 2026. http://dx.doi.org/10.3390/su14042026.

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In the context of acoustic urban planning, the use of noise mappings is a worldwide well-established practice. Therefore, the noise levels in an urban environment are calculated based on models of the sound sources, models of the physical sound propagation effects and the position of the receivers in the area of interest. However, the noise mapping method is limited to sound levels in frequency bands due to missing temporal and spectral information of the sound signals. This, in turn, leads to missing information about the qualitative sound properties, as they can be evaluated in psychoacoustic parameters. Beyond the scope of the classical noise mapping, auralization and physically-based simulation of sound fields can be applied to urban scenarios in the context of urban soundscape analysis. By supporting the auralization technology with a visual counterpart of the urban space, a plausible virtual representation of a real environment can be achieved. The presented framework combines the possibilities of the open-source auralization tool Virtual Acoustics with 3D visualization. In order to enable studies with natural human response or for public communication of urban design projects, those virtual scenes can be either reproduced with immersive technologies—such head-mounted displays (HMD)—or using online video platforms and traditional playback devices. The paper presents an overview of what physical principles can already be simulated, which technological considerations need to be taken into account, and how to set up such environment for auralization and visualization of urban scenes. We present the framework by the case study of IHTApark.

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Komorski, P., G. M. Szymański, and T. Nowakowski. "Development of the urban rail vehicle acoustic model." Applied Acoustics 195 (June 2022): 108807. http://dx.doi.org/10.1016/j.apacoust.2022.108807.

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Journal articles on the topic 'Urban Acoustics'

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