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SOPRANOISE targets simplified assessment of the in-situ intrinsic acoustic performances of road / railway noise barriers. This paper presents its half-term progress. The research is divided in 5 Work Packages, the scientific ones being WP2 to WP5.WP2 is about establishing a state of art (SoA) of the intrinsic performances characterization: it is now finished and presented in 2 other papers by Conter and Fuchs. WP3 is about in-situ inspection tools: based on a review / questionnaire, an inspection protocol has been developed allowing simplified assessments mainly based on visual inspections and characterization of possible defects; WP3 is now in its final testing phase. WP4 is about designing a brand new "quick and safe methods" that could take place "in between" the inspection tools and the standardized EN1793-5 and 6; the research and development phases of WP4 are now finished, while its validation along highways is now scheduled. Finally, WP5 is about the use of noise barriers in the European market and the final report: a synthesis on the physical behavior of noise barriers and the physical significance of the test methods has been done, as well a SoA on the effective use of noise barriers; the results will be presented.

SOPRANOISE (Securing and Optimizing the Performance of Road traffic noise barriers with New methOds and In- Situ Evaluation) is a new European research targeting the in-situ intrinsic acoustic performances of noise barriers, whatever those barriers are placed along roads or along railway tracks. Even if the European (CEN) standards EN1793-5 and EN1793-6 have been initially drafted for certification of product to be used under direct sound field conditions, they also shown their ability to measure, to some extent, the in-situ intrinsic sound absorption / reflection and airborne sound insulation of noise barriers. However, there is still interest / need to simplify their use alongside roads and railway tracks. SOPRANOISE will update the State Of the Art about today in-situ methods, their significance and their accuracy to characterize the noise barriers intrinsic acoustic performances, as well as their ability to be used in a quick and safe manner. Investigations will start from the easiest in-situ inspection methods up to future improved versions of the existing EN1793-5 and EN1793-6. In- between, there is a gap for simplified and safe methods: SOPRANOISE aims to define the right methods for the right levels of decision, from the simplest to the most accurate characterization. This research is funded by CEDR and is scheduled from December 2019 until November 2021.

Inter-noise 2016, 45th International Congress and Exposition of Noise Control Engineering, HAMBOURG, ALLEMAGNE, 21-/08/2016 - 24/08/2016; The European project ROSANNE is preparing a procedure for the characterization of road surface noise properties, to be considered for standardization. The proposed procedure, presented in another paper, is based on tire-road noise measurements using the CPX method. The output will be useful to road administrations and road companies when referring to contractual values in legal documents for road surface construction. Moreover road and environmental administrations are also concerned by evaluating the impact of road surface properties on noise exposure, in particular when implementing the 'Environmental Noise Directive' 2002/49/EC (END). The END requires Member States to produce noise maps and action plans, using a common calculation method, called 'CNOSSOS-EU' and now published in European Directive 2015/996/EC. The purpose of the present study is to check that the road surface characterization delivered by ROSANNE is consistent with the road surface correction specified in the CNOSSOS-EU model for road traffic noise emission. In this paper, the main features of both systems are briefly presented and compared: noise indicators, frequency ranges, pavement definition, reference conditions and measurement conditions. Then recommendations are made on how the ROSANNE characterization procedure could provide valuable and compatible input to the European calculation method for road noise prediction.

In Europe, in situ measurements of sound reflection and airborne sound insulation of noise barriers are usually done according to CEN/TS 1793-5. This method has been improved substantially during the EU funded QUIESST collaborative project. Within the same framework, an inter-laboratory test has been carried out to assess the repeatability and reproducibility of the newly developed method when applied to real-life samples, including the effect of outdoor weather variability and sample ageing. This article presents the statistical analysis of the inter-laboratory test results, and the values of the repeatability and the reproducibility, both for one-third octave bands and for the single-number ratings. The estimated reproducibility values can be used as the extended measure of uncertainty at the 95% credibility level in compliance with the ISO GUM. The repeatability and reproducibility values associated with airborne sound insulation are also compared with the corresponding values for laboratory measurements in building acoustics and an acceptable agreement is found.

ROSANNE is a collaborative project in the 7th EU Framework Program which aims at harmonizing measurement methods for skid resistance, noise emission and rolling resistance of road pavements as a preparation for standardization. The project started in November 2013 and is developing and improving standards in the field of working group CEN/TC227/WG5. Regarding the influence of the pavement on the road traffic noise emission, the main objective is to combine the existing measurement methods of SPB (ISO 11819-1) and CPX (ISO/DIS 11819-2) into a stable and reliable harmonized pavement noise emission characterization method. A respective procedure is being developed within the project and its potential use for noise calculation methods like the one proposed by the CNOSSOS-EU project is investigated. The first two years of research focused on analysing and comparing existing noise measurement methods to specify the noise properties of road surfaces as well as investigating the temperature influence of possible correction measures; respective results will be presented in a separate paper on this issue within this conference. Activities related to the compatibility with the CNOSSOS-EU calculation method and to the experimental validation are still ongoing. The present paper shows the current draft of the procedure developed.

The research QUIESST (QUIetening the Environment of Sustainable Surface Transport) started in November 2010 for 36 months: it targets a better knowledge about the noise barriers performances, either their intrinsic (product) or their extrinsic performances (works, environment, population). QUIESST objectives and work schedule have been presented at InterNoise 2010, as well as its mid-term progress report at InterNoise 2011. This paper will present the progress report at its third-term (6 months to its end): the technical work packages are WP2 (Relationship near-field / far field for sound reflection), WP3 (Improvement of the in-situ method for sound absorption/reflection and insulation measurement), WP4 (Noise performance evaluation: comparison of laboratory and in-situ methods), WP5 (Holistic optimization and global noise impact) and WP6 (Sustainability). Special attention will be done on the achieved results and the realistic final objectives we could reach as conclusions of the research.

The research QUIESST (QUIetening the Environment of Sustainable Surface Transport) successfully started in November 2009 for 36 months, its objectives and work schedule have already been presented at the INTERNOISE 2010 Congress. This paper will present the progress report at mid-term (18 months): the technical work packages are WP2 (Relationship near field / far field for sound reflection), WP3 (Improvement of the in-situ method for sound absorption and insulation measurement), WP4 (Noise performance evaluation: comparison of laboratory and in-situ methods), WP5 (Holistic optimization and global noise impact), WP6 (Sustainability). The achievements reached at the date of this paper will be stated, as well as the remaining steps toward the end of the research.

Since the early 80’s, one models noise propagation; in the early 90’s one started to standardize how to measure the intrinsic characteristics of manufactured noise barriers: in 1997, the EU funded ADRIENNE research; it was a first step, but many problems still remained. Since many years, all the noise propagation software are still modeling noise barriers while characterizing those rather roughly, if not basically, whatever it is for sound absorption, airborne sound insulation or sound diffraction. The EU funded QUIESST research aims to drastically improve the knowledge and understanding of how noise barriers actually works, in function of all their intrinsic characteristics and the environment within which they are installed. This paper introduces QUIESST’s objectives / work schedule for the next 3 years.

Three Italian processed pork products (salame Milano, coppa and pancetta) were submitted to radiation processing at 2, 5, and 8 kGy and vacuum stored. The products submitted to radiation processing at 2 and 5 kGy did not present a significant increase of lipid oxidation products both just after the treatment and after 60 days of vacuum storage. However, a marked increase was observed at 8 kGy radiation dose. The content of 2-alchylcyclobutanones increased with radiation dose. Their presence has been recorded occasionally at 2 kGy and constantly at higher radiation doses (5 and 8 kGy). A significant increase of 2-alchylcyclobutanones was observed during vacuum storage of irradiated pork products.

The aim of this guidebook is to become a reference tool for noise mitigation through a better use of Noise Reducing Devices (NRD) (e.g.: Noise Barriers or sound Absorptive Claddings). It targets all the stakeholders involved in NRD projects (designers, manufacturers, authorities, construction companies, maintenance companies...) and who are willing tooptimise the products and their use, either for rail or road noise mitigation. This guidebook is based on the final results and outcomes of the QUIESST research: it synthesizes this 3-years project and provides examples of best practices and recommendations on: • The effect of sound reflections in the far field by the definition and the determination of intrinsic far field performance indicators; • A new method for in-situ measurements of sound reflection and airborne sound insulation of NRD; • A better knowledge of the European NRD market through the first database comparing 400 different devices and their acoustic performances through more than 1400 test reports • The holistic approach on how to optimise NRD at 3 different levels: o Intrinsic (reflection, transmission and diffraction indices); o Extrinsic / holistic (acoustic, economic and environmental performances); o Global impact on typical dwellings; • The NRD sustainability: how to design, build, maintain and decommission better sustainable NRD.

The research QUIESST (QUIetening the Environment of Sustainable Surface Transport) successfully started in November 2009 for 36 months, its objectives and work schedule have already been presented at the INTERNOISE 2010 Congress. This paper will present the progress report at mid-term (18 months): the technical work packages are WP2 (Relationship near field / far field for sound reflection), WP3 (Improvement of the in-situ method for sound absorption and insulation measurement), WP4 (Noise performance evaluation: comparison of laboratory and in-situ methods), WP5 (Holistic optimization and global noise impact), WP6 (Sustainability). The achievements reached at the date of this paper will be stated, as well as the remaining steps toward the end of the research.

Since the early 80's, one models noise propagation, in the early 90's one started to standardize how to measure the intrinsic characteristics of manufactured noise barriers: in 1997, the EU funded ADRIENNE research ([1] and [2]) was a first step, but many problems still remained. Since years, all the noise propagation software are still modeling noise barriers while characterizing those rather roughly, if not basically, whatever it is for sound absorption, airborne sound insulation or sound diffraction. The EU funded QUIESST research aims to drastically improve the knowledge and understanding of how noise barriers actually works, in function of all their intrinsic characteristics and the environment within which they are installed. This paper introduces QUIESST's objectives / work schedule for the next 3 years.