Fade-In Control for Feedback Delay Networks

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Abstract

In virtual acoustics, it is common to simulate the early part of a Room Impulse Response using approaches from geometrical acous-tics and the late part using Feedback Delay Networks (FDNs). In order to transition from the early to the late part, it is useful to slowly fade-in the FDN response. We propose two methods to con-trol the fade-in, one based on double decays and the other based on modal beating. We use modal analysis to explain the two con-cepts for incorporating this fade-in behaviour entirely within the IIR structure of a multiple input multiple output FDN. We present design equations, which allow for placing the fade-in time at an arbitrary point within its derived limit.
Original languageEnglish
Title of host publicationProceedings of the 23rd International Conference on Digital Audio Effects (DAFx2020)
Pages227-233
Number of pages7
Publication statusPublished - Sep 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Digital Audio Effects - Virtual (Initially Vienna), Vienna, Austria
Duration: 9 Sep 202011 Sep 2020
Conference number: 23
https://dafx2020.mdw.ac.at/eDAFx2020/index.html
https://dafx2020.mdw.ac.at/

Publication series

NameProceedings of the International Conference on Digital Audio Effects
ISSN (Print)2413-6700
ISSN (Electronic)2413-6689

Conference

ConferenceInternational Conference on Digital Audio Effects
Abbreviated titleDAFx
Country/TerritoryAustria
CityVienna
Period09/09/202011/09/2020
Internet address

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