| Zugriffsnummer | 29786 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Establishing traceability for the quantity sound power |
| Autor(in); Institution |
Wittstock, Volker; 1.7, Akustik und Dynamik, PTB-Braunschweig
Schmelzer, Martin; 1.7, Akustik und Dynamik, PTB-Braunschweig
Bethke, Christian; 1.7, Akustik und Dynamik, PTB-Braunschweig
|
| Quelle/Jahr | Inter-Noise 2013 : proceedings:(2013), 1 - 5 |
| Availability | [CD-ROM] ; file name: 0734.pdf |
| Herausgeber(in) |
ÖAL, Österreichischer Arbeitsring für Lärmbekämpfung
|
| Verlag | [Wien]: Österreichischer Arbeitsring für Lärmbekämpfung |
| Konferenzangaben | The 42nd International Congress and Exposition on Noise Control Engineering Inter-Noise 2013, Innsbruck, 15-18, September, 2013, Austria |
| Freie Schlagworte | Sound power ; Traceability of the unit watt |
| Zusammenfassung | The sound power is a main quantity in acoustics. It is the basic descriptor for the sound emission of sound sources and furthermore the basis for all quantities in building acoustics. In spite of this importance, the metrological infrastructure for the quantity sound power is not well developed. Whereas in other areas, like ultrasound, there are standard devices for the realisation of power, such a device is not available in airborne sound. As a result of this, there is no traceability for the quantity sound power at present. In the frame of the European Metrology Research Programme it is now intended to implement a primary realisation of the unit watt in airborne sound which will be based on an embedded oscillating solid body. The sound power emitted by this device can be calculated by Rayleigh`s integral from the distribution of the vibration velocity at the surface of the radiator. The velocity will be measured by a laser scanning vibrometer. The concept will be introduced and advantages with respect to the current situation discussed. |
