Distribution of Modal Damping in Absorptive Shoebox Rooms

Loading...
Thumbnail Image
Access rights
openAccess
Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
Date
2023
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
Series
Proceedings of the 2023 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2023, IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, Volume 2023-October
Abstract
The image-source method is widely applied to compute room impulse responses (RIRs) of shoebox rooms with arbitrary damping. However, with increasing RIR lengths, the number of image sources grows rapidly, leading to slow computation. We propose a method to estimate the damping density of a damped shoebox room, which in turn can provide the energy decay necessary to model the stochastic late reverberation. The damping density is derived from a modal decomposition that is compliant with the ISM solution. We show that the proposed method gives a more accurate estimate of the energy decay than previous methods and can be efficiently computed regardless of the RIR lengths. While we focus on the derivation and evaluation, the main practical applications of the proposed model include, e.g., the faster synthesis of late reverb and the analysis of multi-slope decays.
Description
Funding Information: The work of M. Schäfer was supported by the Bavarian State Ministry of Science and Arts within the bidt Graduate Center for Postdocs. Publisher Copyright: © 2023 IEEE.
Keywords
Damping Density, Image Source Method, Modal Decomposition, Reverberation, Shoebox Rooms
Other note
Citation
Schafer , M , Prawda , K , Rabenstein , R & Schlecht , S J 2023 , Distribution of Modal Damping in Absorptive Shoebox Rooms . in Proceedings of the 2023 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2023 . IEEE Workshop on Applications of Signal Processing to Audio and Acoustics , vol. 2023-October , IEEE , IEEE Workshop on Applications of Signal Processing to Audio and Acoustics , New Paltz , New York , United States , 22/10/2023 . https://doi.org/10.1109/WASPAA58266.2023.10248145