| 1. |
- Alves, Sonia, et al.
(författare)
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Urban sound planning - The SONORUS project
- 2016
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Ingår i: Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future. ; , s. 2319-2328
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Konferensbidrag (refereegranskat)abstract
- Sound is still insufficiently considered in most urban planning processes, resulting in unsatisfactory sonic environments that might even present health risks to citizens. No matter how complex and challenging the planning project might be, the creation or preservation of acoustically favorable environments should be part of urban planning. To support this process, the SONORUS project developed a holistic approach for urban sound planning and showed its benefits with practical test cases. The goal of the holistic approach is to facilitate the integration of sonic planning in an earlier stage of the planning process by combining different approaches and by providing new tools and methods, thus enabling urban planners to achieve healthy and supportive sound scenarios.
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| 2. |
- Amiryarahmadi, Nata, 1982, et al.
(författare)
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Application of LMS Algorithm to Measure Low-Frequency Transient Forces from Human Walking
- 2016
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Ingår i: Acta Acustica united with Acustica. - : S. Hirzel Verlag GmbH. - 1610-1928 .- 1861-9959. ; 102:1, s. 23-34
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Tidskriftsartikel (refereegranskat)abstract
- Measurement and modeling of low frequency ground reaction forces (GRFs) from human walking have been the subjects of research in different fields from biomechanics to civil engineering and structural dynamics. Many of the existing models are developed based on experiments which alter natural walking by for example presence of force transducers, limitations in the speed and path of walking and replacing the real floor with a transducerfacilitated measurement rig. These alterations result in contact forces which do not represent real GRFs. In this study, a time-domain inverse measurement method based on LMS algorithm is used to measure low-frequency (
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| 3. |
- Amiryarahmadi, Nata, et al.
(författare)
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Identification of low-frequency forces induced by footsteps on lightweight floors
- 2016
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Ingår i: Acta Acoustica united with Acustica. - : S. Hirzel Verlag GmbH. - 1610-1928 .- 1861-9959. ; 102:1, s. 45-57
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Tidskriftsartikel (refereegranskat)abstract
- Despite many advantages of wooden buildings, low-frequency noise disturbance, mainly from human footsteps on timber floors, is a major hindrance for widespread application of wood in multi-storey buildings. In many cases the impact noise evaluations of the wooden floors according to ISO 140-7 and ISO 717-2 standards do not correspond to subjective experiences. This study aims to investigate the characteristics of footstep forces to support further studies related to discrepancies between standard evaluations and low-frequency noise disturbances in lightweight buildings. Transient footstep forces in vertical direction made by different walkers and different footwear on two floor structures were measured and compared. The vertical footstep forces were then compared with the impact forces made by a standard tapping machine. Analysis revealed that footstep forces contain large amplitudes at low frequencies (20 < f < 50) which are not included in the standard evaluation procedure. Therefore, by extending the frequency range of the standard measurements down to 20 Hz and designing an accurate adaptation term for evaluations, a better correlation between standard impact noise evaluations and acoustic performance of the lightweight buildings might be achieved.
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| 4. |
- Diapoulis, Georgios, 1981, et al.
(författare)
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Person identification from walking sound on wooden floor
- 2018
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Ingår i: Euronoise 2018. - 2226-5147. ; , s. 1727-1732
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Konferensbidrag (refereegranskat)abstract
- Human activities in building structures may vary to a great extend and daily mobility may be the cause of noise and vibrations. We focused on walking sound to identify different individuals based on airborne sound recordings. Our aim was to provide a description of high-level acoustical features that corresponds to walking sound and person identification. We present two levels of abstraction. The first level builds upon principal component analysis and provides the main sound characteristics of walking activity. For the second level of abstraction we provide higher-level acoustical features that better describe person identification.
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| 5. |
- Estévez Mauriz, Laura, 1982, et al.
(författare)
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Isolating key features in urban traffic dynamics and noise emission: a study on a signalized intersection and a roundabout
- 2016
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Ingår i: Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future.
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Konferensbidrag (refereegranskat)abstract
- Urban planning and transport network are considered as major urban systems with great impact on the sound environment. Most of the work done in transport management and traffic design to improve the quality of both outdoor and indoor sound environment relies on conventional noise mapping software outcomes. This type of tool is based on macroscopic traffic modelling, considering traffic flow as a steady noise source. A commonly implemented practice intended to reduce noise in urban areas is the transformation of a signalised crossing into a roundabout. However, the individual vehicle behaviour becomes relevant in these decisions, where high time-pattern fluctuations are responsible for changes in the quality of the urban sound environment and of human activity. The present paper studies a set of indicators from isolated key features in these two road traffic configurations and their possible variations (acceleration, heavy vehicles, etc.). A VISSIM microscopic traffic simulation model combined with the CNOSSOS-EU noise emission model is used to test cases based on real situations, now in development stage. The approach presented aims to provide stronger basis in the reasoning behind why different road traffic configurations adopted in the urban planning practice give certain effects in relation to the urban sound environment.
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| 6. |
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| 7. |
- Estévez Mauriz, Laura, 1982, et al.
(författare)
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SONORUS Urban sound planning project and test sites: an example within the planning stage
- 2016
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Ingår i: Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future.
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Konferensbidrag (refereegranskat)abstract
- SONORUS Urban sound planning project looks towards a proactive planning for improved sonic environments, coupled with the variables influencing the quality of life in cities. The project embraces a holistic urban planning approach, involving acoustics at the planning stage as another variable capable to enrich the built environment. To connect the research carried out with practical implementations, SONORUS incorporates four real case studies with different characteristics and a common demand on the improvement of the sound environment at different stages. This paper focuses mainly on Frihamnen test site (Gothenburg, Sweden), considered a strategic city project with the intention to transform the space into a dense mixed-use area. The paper goes through a general introduction framing the holistic approach in urban sound planning at four test sites. The discussion is centred in the research within Frihamnen and the workshop carried out with SONORUS members and city representatives, with the intention to analyse the acoustic situation and understand the impact of future developments on the sound environment. Finally, the work discusses about the consequences and possibilities that the holistic approach might have in urban sound planning and the entire urban planning process as a driving force to improve the liveability of spaces.
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| 8. |
- Estévez Mauriz, Laura, 1982, et al.
(författare)
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Soundwalks in Gothenburg
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The present report presents the results of a series of soundwalks carried out in the city of Gothenburg as part of the “Framtidsveckan 2015” activities. The study was developed inside the EC project SONORUS Urban Sound Planning in collaboration with the Environmental Office of the city of Gothenburg.The goal is to analyse the sound environment at different locations from the citizens’ point of view through a series of questions while at the same time, sound recordings and acoustical indicator data is obtained. Thereby, thecitizens’ will have the opportunity to contribute to the present and future urban development, including urban sound planning, in the planning agenda. Moreover, the intention is to increase awareness among citizens in terms of noise exposure and sound quality, in addition to make them part of the study of their city. The soundwalks took place in October 2015.
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| 9. |
- Estévez Mauriz, Laura, 1982, et al.
(författare)
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Traffic dynamics, road design and noise emission: a study case
- 2015
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Ingår i: Euronoise 2015, 10th European Congress on Noise Control Engineering.
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Konferensbidrag (refereegranskat)abstract
- Traffic management and traffic design have been issued as the main solutions to reduced problems related to mobility. In relation with noise mapping, traffic simulation is usually based on macroscopic modelling, with e.g. mean speed and flow as output. However, dynamics in terms of acceleration have a strong influence on noise emission. In the current paper, road traffic noise emission is calculated with dynamic traffic as input. A real case, now in planning stage, is used as a setting containing several traffic design alternatives. The resulting total noise emission is calculated for the different traffic and road design solutions by using a microscopic traffic simulation model (VISSIM) combined with a model for noise emission (CNOSSOS-EU). The qualities of the resulting traffic and noise situations are discussed.
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| 10. |
- Estévez Mauriz, Laura, 1982, et al.
(författare)
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Urban space and the sound environment: Transport system, urban morphology, quiet side and space users in the SONORUS project
- 2016
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Ingår i: Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future. ; , s. 2928-2938
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Konferensbidrag (refereegranskat)abstract
- Awareness on urban environmental quality is leading the built environment resilience and sustainability vision, highlighting the importance of a multidisciplinary framework on urbanization processes. A main concern is the negative impact of outdoor noise due to road traffic, determined largely by the source strength, i.e. the vehicles. This paper summarizes the work within the optimization of urban areas inside the SONORUS Urban sound planning project. The purpose is to provide urban planning tools focusing on interacting approaches through the traffic planning and buildings as instruments supporting a better urban environment, with noise as the main indicator. First, the prediction modelling for quiet sides based on the Qside model is implemented and tested on cases measured in situ. Second, a microscopic road traffic modelling tool gives useful output for noise level predictions as function of time, opening the possibility to calculate noise indicators and test traffic configurations. Discussion extends towards the study of urban morphology diversification, considered a key strategy to increase liveability of spaces, its interaction with the transport system and the impact on the sound environment. Finally, interest focuses on space users modelling their environment beyond noise control, using the soundwalk as a tool to study urban sound experience.
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