Wave-domain loudspeaker signal decorrelation for system identification in multichannel audio reproduction scenarios

Schneider M, Hümmer C, Kellermann W (2013)


Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2013

Pages Range: 605-609

Article Number: 6637719

Event location: Vancouver, BC CA

ISBN: 978-1-4799-0356-6

DOI: 10.1109/ICASSP.2013.6637719

Abstract

For applications like acoustic echo cancellation (AEC) or listening room equalization (LRE), a loudspeaker-enclosure-microphone system (LEMS) must be identified. When using a large number of reproduction channels, as, e. g., for wave field synthesis (WFS) or Higher-Order Ambisonics (HOA), the strong correlation of the loud-speaker signals will hamper a unique identification. A state-of-the-art remedy against this so-called nonuniqueness problem is a decorrelation of the loudspeaker signals, which facilitates a unique identification. However, most of the known approaches are not suitable for acoustic wave field reproduction schemes, as they would distort the reproduced wave field in an uncontrolled manner or degrade the audio quality. In this contribution, we propose a wave-domain time-varying filtering of the loudspeaker signals, so that the reproduced wave field is rotated within a perceptually acceptable range, while preserving its shape. © 2013 IEEE.

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How to cite

APA:

Schneider, M., Hümmer, C., & Kellermann, W. (2013). Wave-domain loudspeaker signal decorrelation for system identification in multichannel audio reproduction scenarios. In Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) (pp. 605-609). Vancouver, BC, CA.

MLA:

Schneider, Martin, Christian Hümmer, and Walter Kellermann. "Wave-domain loudspeaker signal decorrelation for system identification in multichannel audio reproduction scenarios." Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Vancouver, BC 2013. 605-609.

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