The overall aim of this research was to find a group of easy-to-access variables, that are measur... more The overall aim of this research was to find a group of easy-to-access variables, that are measurable or assessable, and which help predict acoustic comfort in urban places, in order to make further progress in developing a soundscape indicator based on indices readily available in urban environments. Our main conceptual framework has been the Environmental Experience Model and the ISO of Soundscape, together with the most up-to-date information and technology, where parameters that influence the soundscape and comfort in urban public places have been identified. This work has been undertaken as part of the CITI-SENSE project. A viable technical and procedural solutionwas designed and tested in a field demonstration, where 53 people were engaged to provide 120 observations in the city ofVitoria-Gasteiz, using environmental sensors connected to a smartphone. The results were analysed and are discussed here with the aim of defining an indicator that permits an easy evaluation of acous...
The use of continuous monitoring systems to control aspects such as noise pollution has grown in ... more The use of continuous monitoring systems to control aspects such as noise pollution has grown in recent years. The commercial monitoring systems used to date only provide information on noise levels but do not identify the noise sources that generate them. The identification of noise sources is an important aspect in order to apply corrective measures to mitigate the noise levels. In this sense, new technological advances like machine listening can enable the addition of other capabilities to sound monitoring systems such as the detection and classification of noise sources. Despite the increasing development of these systems, researchers have to face some shortcomings. The most frequent ones are on the one hand, the lack of data recorded in real environments and on the other hand, the need for automatic labelling of large volumes of data collected by working monitoring systems. In order to address these needs, in this paper, we present our own sound database recorded in an urban en...
Due to the interest in reducing the noise quality in the vicinity of roads, it is very common to ... more Due to the interest in reducing the noise quality in the vicinity of roads, it is very common to find anti-noise devices on their banks. The continuous growth of roads and vehicles have required the need to improve the effectiveness of barriers, putting on the barrier additional element called top device (cap, top barrier, crowning). This paper presents the first results obtained during the MAITE project “Transport infrastructure noise attenuation: design and system modelling of additional devices to optimize the effectiveness on diffraction edges”, based on calculations to evaluate the effect of the top edge of the barrier. The Harmonoise reference model has been used to choose the propagation method for evaluating the diffraction effect either in the source region and receiver region. The intrinsic characteristics of sound diffraction of added devices have been assessed according to the European technical specification CENT/TS 1793-4. Finally, it is also presented the results obtained by numerical simulations using a Boundary element method, in order to verify the results achieved in the measurement campaign.
The aim of the MAITE project " Transport infrastructure noise attenuation: design and system... more The aim of the MAITE project " Transport infrastructure noise attenuation: design and system modelling of additional devices " was to design and evaluate the effectiveness of a new top device designed by TECNALIA. On the first step of the project it was carried out a comparison of the acoustic effect of different geometries using 2D Boundary Element method. Afterwards, the most effective design was evaluated according to the European specifications CEN/TS 1793-4. Those results were presented in INTERNOISE 2010. This paper presents results of insertion loss obtained by the " in situ " evaluation, based on the direct approach of ISO 10847:1997. The evaluation was carried out in a main road (BI-631) with the collaboration of the Provincial Government of Bizkaia, who facilitated the installation of a noise reducing device on top of an already installed noise barrier. It was proved that the top device reduces noise levels at some extent. Additionally, the paper analys...
This paper presents the results obtained during the MAITE II project “Transport infrastructure no... more This paper presents the results obtained during the MAITE II project “Transport infrastructure noise attenuation: design and system modeling of additional devices to optimize the effectiveness on diffraction edges”, based on calculations and experimentation to evaluate the effect of top edge of a noise barrier. The intrinsic characteristics of the top edge have been assessed according to the European technical specifications CEN/TS 1793-4. The attenuation due to the top device has been evaluated at several distances. Finally, it is also presented the results obtained by 2D and 3D numerical simulations using a Boundary Element Method, in order to compare them with the results achieved in the measurement campaign.
The overall aim of this research was to find a group of easy-to-access variables, that are measur... more The overall aim of this research was to find a group of easy-to-access variables, that are measurable or assessable, and which help predict acoustic comfort in urban places, in order to make further progress in developing a soundscape indicator based on indices readily available in urban environments. Our main conceptual framework has been the Environmental Experience Model and the ISO of Soundscape, together with the most up-to-date information and technology, where parameters that influence the soundscape and comfort in urban public places have been identified. This work has been undertaken as part of the CITI-SENSE project. A viable technical and procedural solutionwas designed and tested in a field demonstration, where 53 people were engaged to provide 120 observations in the city ofVitoria-Gasteiz, using environmental sensors connected to a smartphone. The results were analysed and are discussed here with the aim of defining an indicator that permits an easy evaluation of acous...
The use of continuous monitoring systems to control aspects such as noise pollution has grown in ... more The use of continuous monitoring systems to control aspects such as noise pollution has grown in recent years. The commercial monitoring systems used to date only provide information on noise levels but do not identify the noise sources that generate them. The identification of noise sources is an important aspect in order to apply corrective measures to mitigate the noise levels. In this sense, new technological advances like machine listening can enable the addition of other capabilities to sound monitoring systems such as the detection and classification of noise sources. Despite the increasing development of these systems, researchers have to face some shortcomings. The most frequent ones are on the one hand, the lack of data recorded in real environments and on the other hand, the need for automatic labelling of large volumes of data collected by working monitoring systems. In order to address these needs, in this paper, we present our own sound database recorded in an urban en...
Due to the interest in reducing the noise quality in the vicinity of roads, it is very common to ... more Due to the interest in reducing the noise quality in the vicinity of roads, it is very common to find anti-noise devices on their banks. The continuous growth of roads and vehicles have required the need to improve the effectiveness of barriers, putting on the barrier additional element called top device (cap, top barrier, crowning). This paper presents the first results obtained during the MAITE project “Transport infrastructure noise attenuation: design and system modelling of additional devices to optimize the effectiveness on diffraction edges”, based on calculations to evaluate the effect of the top edge of the barrier. The Harmonoise reference model has been used to choose the propagation method for evaluating the diffraction effect either in the source region and receiver region. The intrinsic characteristics of sound diffraction of added devices have been assessed according to the European technical specification CENT/TS 1793-4. Finally, it is also presented the results obtained by numerical simulations using a Boundary element method, in order to verify the results achieved in the measurement campaign.
The aim of the MAITE project " Transport infrastructure noise attenuation: design and system... more The aim of the MAITE project " Transport infrastructure noise attenuation: design and system modelling of additional devices " was to design and evaluate the effectiveness of a new top device designed by TECNALIA. On the first step of the project it was carried out a comparison of the acoustic effect of different geometries using 2D Boundary Element method. Afterwards, the most effective design was evaluated according to the European specifications CEN/TS 1793-4. Those results were presented in INTERNOISE 2010. This paper presents results of insertion loss obtained by the " in situ " evaluation, based on the direct approach of ISO 10847:1997. The evaluation was carried out in a main road (BI-631) with the collaboration of the Provincial Government of Bizkaia, who facilitated the installation of a noise reducing device on top of an already installed noise barrier. It was proved that the top device reduces noise levels at some extent. Additionally, the paper analys...
This paper presents the results obtained during the MAITE II project “Transport infrastructure no... more This paper presents the results obtained during the MAITE II project “Transport infrastructure noise attenuation: design and system modeling of additional devices to optimize the effectiveness on diffraction edges”, based on calculations and experimentation to evaluate the effect of top edge of a noise barrier. The intrinsic characteristics of the top edge have been assessed according to the European technical specifications CEN/TS 1793-4. The attenuation due to the top device has been evaluated at several distances. Finally, it is also presented the results obtained by 2D and 3D numerical simulations using a Boundary Element Method, in order to compare them with the results achieved in the measurement campaign.
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