A direct derivation of transforms for wave-domain adaptive filtering based on circular harmonics

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Schneider M, Kellermann W
Publication year: 2012
Pages range: 1034-1038
ISBN: 978-1-4673-1068-0


Abstract


Wave-domain adaptive filtering (WDAF) is advantageous for modeling loudspeaker-enclosure-microphone systems with many loudspeakers and microphones (MIMO LEMS). The necessary transforms may be derived by considering free field propagation between loudspeaker and microphones first, followed by wave field analysis of the true and simulated microphone signals. However, transforms obtained following this strategy are not invertible when there are more loudspeakers than microphones. As invertibility of the transforms is required for many applications, this restricts the applicability of WDAF. In this paper we propose a strategy to describe the free field propagation directly in the wave domain, so that invertible transforms can be defined independently from the number of actually used microphones. With this strategy, transforms for a MIMO LEMS comprising a uniform circular microphone array and an arbitrary loudspeaker array are derived. © 2012 EURASIP.


FAU Authors / FAU Editors

Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik
Schneider, Martin
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


How to cite

APA:
Schneider, M., & Kellermann, W. (2012). A direct derivation of transforms for wave-domain adaptive filtering based on circular harmonics. (pp. 1034-1038). Bucharest, RO.

MLA:
Schneider, Martin, and Walter Kellermann. "A direct derivation of transforms for wave-domain adaptive filtering based on circular harmonics." Proceedings of the European Signal Processing Conference (EUSIPCO), Bucharest 2012. 1034-1038.

BibTeX: 

Last updated on 2018-17-10 at 08:23