TY - JOUR A1 - Garai, Massimo A1 - Schoen, Eric A1 - Behler, Gottfried A1 - Bragado, Beatriz A1 - Chudalla, Michael A1 - Conter, Marco A1 - Defrance, Jérôme A1 - Demizieux, Patrick A1 - Glorieux, Christ A1 - Guidorzi, Paolo T1 - Repeatability and reproducibility of in situ measurements of sound reflection and airborne sound insulation index of noise barriers T2 - Acta acustica united with Acustica N2 - 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 in 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. KW - Absorption KW - Analysis (math) KW - Group analysis (test) KW - In situ KW - Measurement KW - Noise barrier KW - Reflectivity KW - Reproducibility KW - Sound KW - Specification (standard) KW - Statistics KW - Test method KW - Absorption KW - Analyse (math) KW - Frequency KW - Frequenz KW - In situ KW - Lärmschutzwand KW - Messung KW - Norm (tech) KW - Prüfverfahren KW - Reflexionsgrad KW - Reproduzierbarkeit KW - Rinanalyse KW - Schall KW - Statistik Y1 - 2014 UR - https://bast.opus.hbz-nrw.de/frontdoor/index/index/docId/2297 N1 - Volltext: http://dx.doi.org/10.3813/AAA.918797 Außerdem waren folgende Einrichtungen an dem Versuch beteiligt: TNO (Niederlande), RWTH Aachen, CIDAUT (Spanien), AIT (Österreich), CSTB (Frankreich), LRPC Strasbourg (Frankreich), K.U. Leuven (Belgien). VL - 100 IS - 6 SP - 1186 EP - 1201 PB - Hirzel CY - Stuttgart ER -