Wave field synthesis and wave field analysis are attractive techniques for
high-quality sound-field auralization and recording using loudspeaker arrays
and microphone arrays. However,
to utilize these techniques in
multichannel acoustic interfaces, several challenges in signal
processing have to be overcome in this new context, e.g.,
acoustic echo cancellation (AEC) to avoid acoustic feedback in full-duplex systems,
interference cancellation on the recording side, and room compensation on the
reproduction side. In traditional setups, these problems are tackled using
adaptive filtering techniques in the time-frequency domain.
To cope with massive multichannel systems, we present a novel and highly efficient framework
for adaptive filtering in the wave domain
by reconciling the flexibility of adaptive filtering
and the underlying physics described by the acoustic wave equation.
The new framework explicitly takes into account the spatial dimensions
of the closely spaced loudspeakers and the microphone arrays.
Experimental results, e.g., with a 48-channel AEC verify the concept for both,
simulated and actually measured room acoustics.
| [C08-8] | H. Buchner and S. Spors, "A general derivation of wave-domain adaptive filtering and application to acoustic echo cancellation," Proc. Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, pp. 816-823, Oct. 2008. |
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| [C08-7] | H. Buchner, "Acoustic echo cancellation for multiple reproduction channels: From first principles to real-time solutions," Proc. ITG Conf. on Speech Communication, Aachen, Germany, Oct. 2008. Best Paper Award. |
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| [C08-1] | S. Spors and H. Buchner, "Efficient massive multichannel active noise control using wave-domain adaptive filtering," IEEE Int. Symp. on Communications, Control, and Signal Processing (ISCCSP), St. Julians, Malta, Mar. 2008. Invited presentation. |
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| [B07-3] |
S. Spors, H. Buchner, and R. Rabenstein,
"Spatio-temporal adaptive inverse filtering in the wave domain,"
In E. Hänsler and G. Schmidt (eds.), Topics in Speech and Audio Processing in Adverse Environments,
Springer-Verlag, Berlin/Heidelberg, pp. 551-583, Aug. 2008.
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| [C07-5] | S. Spors and H. Buchner, "An approach to massive multichannel broadband feedforward active noise control using wave-domain adaptive filtering," IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), New Paltz, NY, USA, Oct. 2007. |
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| [J07-1] | S. Spors, H. Buchner, R. Rabenstein, and W. Herbordt, "Active listening room compensation for massive multichannel sound reproduction systems using wave-domain adaptive filtering," Journal of the Acoustical Society of America, vol. 122, no. 1, pp. 354-369, Jul. 2007. |
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| [C06-6] | S. Spors, H. Buchner, and R. Rabenstein, "Eigenspace adaptive filtering for efficient pre-equalization of acoustic MIMO systems," Proc. European Signal Processing Conference (EUSIPCO), Florence, Italy, Sept. 2006. |
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| [C05-4] | W. Herbordt, S. Nakamura, S. Spors, H. Buchner, and W. Kellermann, "Wave Field Cancellation using Wave-Domain Adaptive Filtering," Conf. Rec. Joint Workshop for Hands-Free Speech Communication and Microphone Arrays (HSCMA), Piscataway, NJ, USA, March 2005. |
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| [C04-9] | S. Spors, H. Buchner, and R. Rabenstein, "Adaptive Listening Room Compensation for Spatial Audio Systems," Proc. European Signal Processing Conference (EUSIPCO), Vienna, Austria, September 2004. |
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| [C04-8] | H. Buchner, S. Spors, W. Herbordt, and W. Kellermann, "Wave-Domain Adaptive Filtering for Acoustic Human-Machine Interfaces based on Wavefield Analysis and Synthesis," Proc. European Signal Processing Conference (EUSIPCO), Vienna, Austria, September 2004. |
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| [C04-6] | S. Spors, H. Buchner, and R. Rabenstein, "A Novel Approach to Active Listening Room Compensation for Wave Field Synthesis Using Wave-Domain Adaptive Filtering," Conf. Rec. IEEE Intl. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), Montreal, Canada, vol. 4, pp. 29-32, May 2004. |
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| [C04-5] | H. Buchner, S. Spors, and W. Kellermann, "Wave-Domain Adaptive Filtering: Acoustic Echo Cancellation for Full-Duplex Systems Based on Wave-Field Synthesis," Conf. Rec. IEEE Intl. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), Montreal, Canada, vol. 4, pp. 117-120, May 2004. |
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| [C04-4] | S. Spors, H. Buchner, and R. Rabenstein, "Efficient Active Listening Room Compensation for Wave Field Synthesis," Conf. Rec. AES 116th Convention, Berlin, Germany, May 2004. |
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| [C04-3] | H. Buchner, S. Spors, and W. Kellermann, "Full-Duplex Systems for Sound Field Recording and Auralization Based on Wave Field Synthesis," Conf. Rec. AES 116th Convention, Berlin, Germany, May 2004. |
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| [B03-1] | H. Buchner, J. Benesty, and W. Kellermann, "Multichannel Frequency-Domain Adaptive Filtering with Application to Acoustic Echo Cancellation," In J.Benesty and Y.Huang (eds.), Adaptive signal processing: Application to real-world problems, Springer-Verlag, Berlin/Heidelberg, pp. 95-128, Feb 2003. |
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| [C02-2] | H. Buchner, S. Spors, W. Kellermann, and R. Rabenstein, "Full-Duplex Communication Systems with Loudspeaker Arrays and Microphone Arrays," Proc. IEEE Int. Conference on Multimedia and Expo (ICME), Special session on coding and transmission formats for 3D audio, Lausanne, Switzerland, August 2002. |
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Latest update: Jan. 2009