| Autor: |
Conter, Marco, Wehr, Reinhard, Haider, Manfred, Gasparoni, Sara |
| Přispěvatelé: |
System, HAL, Société Française d'Acoustique |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
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| Popis: |
Sound absorption is a relevant property for the acoustic quality of noise barriers. The Adrienne method is the most used in-situ measurement method in Europe for testing the acoustic performance of noise reducing devices in real life conditions. This method was introduced in 2003 with the technical specification CEN/TS 1793-5 and the development of this method is now one of the main objectives of the European project QUIESST. In the frame of this project AIT Mobility has performed a first measurement campaign in order to investigate the influence of ground reflections and the role of the sound source for measurements of sound absorption in the near field. Two different sound sources and different microphone heights have been used for analyzing the influence of the source directivity and the role of ground reflections. The study shows that particular attention should be paid to the source directivity and to the microphone position, while the ground reflection does not seems to represent a problem for the method at all. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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