1 / 8

Handling of random processes in room acoustics

Handling of random processes in room acoustics. Bendegúz Bartha Laboratory of Acoustics 2011.06.20. Acoustic modeling. Multi-dimensional Free field wave propagation Building vibration etc. Focus on room acoustics Sound pressure inside Reverberation time etc. Uncertainty in modeling.

lamya
Télécharger la présentation

Handling of random processes in room acoustics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Handling of random processes in room acoustics Bendegúz Bartha Laboratory of Acoustics 2011.06.20.

  2. Acoustic modeling • Multi-dimensional • Free field wave propagation • Building vibration • etc. • Focus on room acoustics • Sound pressure inside • Reverberation time • etc.

  3. Uncertainty in modeling H Output=H{Input, Parameters} Input Output • 3-way uncertainty • Input • Parameter • Model Softwares don’t handle this problem! (at the moment) Model parameters

  4. Model • Equations of the sound field • Solution: spectral finite element method • Tasks • Random process generation • Use this process in the model

  5. Random process • Karhunen Loeve expansion • Deterministic functions weigthed by random variables • Wall absorbation is a stochastic process

  6. Handling the random process • Monte Carlo method • Deterministic response for each realisation • Statistic analysis • Alternative methods • Perturbation method • ?

  7. Future work • Finish the software • 3rd case: random model

  8. Publications • This project • ICSV 2009 • Other project • Forum Acusticum 2011 • Journal of ?

More Related