| Zugriffsnummer | 33265 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Factors that affect the sound power emitted by reference sound sources |
| Autor(in); Institution |
Brezas, Spyros; 1.7, Akustik und Dynamik, PTB-Braunschweig
Wittstock, Volker; 1.7, Akustik und Dynamik, PTB-Braunschweig
|
| Quelle/Jahr | Fortschritte der Akustik : DAGA 2015, Nürnberg, 41. Jahrestagung für Akustik ; Tagungsband:(2015), 792 - 794 |
| Availability | [CD-ROM] ; file name: 000191.pdf |
| Herausgeber(in) |
Becker, Stefan
|
| ISBN | 978-3-939296-08-9 |
| Verlag | Berlin: DEGA |
| Konferenzangaben | 41. Deutsche Jahrestagung für Akustik, Nürnberg, 16-19, März, 2015, Deutschland |
| Zusammenfassung | For the purpose of a project funded by the European Metrology Research Programme (EMRP), an analysis for the dissemination of the unit watt in airborne sound has been performed. The analysis includes measurements of the emitted sound by reference sound sources, while varying factors that affect the sound power, namely rotationalspeed, ambient pressure and temperature. A model is proposed for the relation between these factors and the sound power level. Based on this model, the sound power uncertainty is also evaluated. It is furthermore investigated whether aerodynamic reference sound sources can be modelled as monopoles or as dipoles. For the accomplishment of the measurements, a scanning apparatus has been developed, which has also yielded directivity results that are presented. |
