Wave-domain transforms for irregular loudspeaker array topologies

Hofmann C, Kellermann W (2015)

Publication Language: English

Publication Type: Conference contribution

Publication year: 2015

City/Town: Nürnberg, Germany

Pages Range: 1606-1609

Event location: Nuremberg DE

Abstract

Today’s premium cars are typically equipped with a large number of loudspeakers and microphones to provide high-quality entertainment, hands-free communication via cellphones, and hands-free access to the applications running on the car’s head unit relying on a human/machine voice dialog. Especially for multichannel sound rendering, this requires multichannel Acoustic Echo Cancellation (AEC) systems. For lab environments, the concept of wave-domain AEC [1] proved to be an efficient solution for planar loudspeaker arrays by performing the adaptive filtering in a spatial transform domain. While acoustic systems typically show similarly strong couplings between all loudspeakers and all microphones, the wave-domain couplings between loudspeaker modes and microphone modes decrease with increasing difference between mode orders [1]. This prior knowledge can be exploited for improved system identification and reduced computational complexity by modeling only a subset of couplings in the spatial transform domain.

Authors with CRIS profile

Christian Hofmann Professur für Signalverarbeitung Walter Kellermann Professur für Signalverarbeitung

How to cite

APA:

Hofmann, C., & Kellermann, W. (2015). Wave-domain transforms for irregular loudspeaker array topologies. In Proceedings of the Jahrestagung für Akustik (DAGA) (pp. 1606-1609). Nuremberg, DE: Nürnberg, Germany.

MLA:

Hofmann, Christian, and Walter Kellermann. "Wave-domain transforms for irregular loudspeaker array topologies." Proceedings of the Jahrestagung für Akustik (DAGA), Nuremberg Nürnberg, Germany, 2015. 1606-1609.

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