Kategorien
Seiten
-

Akustik-Blog

Johannes Imort: The Directional Energy Decay Curve in Reverberation Rooms

17. August 2018 | von
Wann:
2018-11-30 um 11:00 – 11:30
2018-11-30T11:00:00+01:00
2018-11-30T11:30:00+01:00
Wo:
Institut für Technische Akustik, Seminarraum
Kopernikusstraße 5
52074 Aachen
Deutschland
Preis:
Kostenlos
To describe acoustical absorption properties of  materials, the random incidence absorption coefficient is to be measured, which is done in a reverberation room and require the sound field to be diffuse. Earlier studies showed poor results in reproducibility of these measurements among laboratories, so there is reason to suspect, that the errors result from the missing condition of a diffuse sound field. A standardized method to characterize the diffuseness is lacking.
This thesis evaluates the concept of directional energy decay curves to obtain informations about systematic defects in the isotropy of a sound field. Therefore different acoustic simulations were conducted, evaluated and put in context with the absorption coefficient calculation according to ISO 354.

Kommentare sind geschlossen.