Theoretical analysis of recursive implementations of multi-channel cross-talk cancellation systems
Theoretical analysis of recursive implementations of multi-channel cross-talk cancellation systems
Cross-talk cancellation (CTC) is a well-established technique for delivering binaural audio over loudspeakers. Traditional two-channel CTC systems are commonly implemented using networks of Finite Impulse Response (FIR) filters, with causality ensured through the use of modeling delays and regularisation techniques. Recursive implementations, which rely on a feedback network, have been proposed as an alternative for two-channel systems, offering potential benefits in computational efficiency. This paper investigates whether a similar recursive architecture can be extended to multi-channel CTC systems, particularly those employing linear arrays of loudspeakers. Through theoretical analysis, we demonstrate that recursive multi-channel CTC implementations are intrinsically non-causal under general conditions, making a direct realtime realisation infeasible without significantly compromising the system performance.
Fazi, Filippo Maria
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Veronesi, Francesco
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Simon Galvez, Marcos F.
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Franck, Andreas
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Fazi, Filippo Maria
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Veronesi, Francesco
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Simon Galvez, Marcos F.
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Franck, Andreas
f1c781a5-5c64-4d47-ab86-74240d95d7f0
Fazi, Filippo Maria, Veronesi, Francesco, Simon Galvez, Marcos F. and Franck, Andreas
(2025)
Theoretical analysis of recursive implementations of multi-channel cross-talk cancellation systems.
Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), , Tahoe City, United States.
5 pp
.
(In Press)
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Conference or Workshop Item
(Paper)
Abstract
Cross-talk cancellation (CTC) is a well-established technique for delivering binaural audio over loudspeakers. Traditional two-channel CTC systems are commonly implemented using networks of Finite Impulse Response (FIR) filters, with causality ensured through the use of modeling delays and regularisation techniques. Recursive implementations, which rely on a feedback network, have been proposed as an alternative for two-channel systems, offering potential benefits in computational efficiency. This paper investigates whether a similar recursive architecture can be extended to multi-channel CTC systems, particularly those employing linear arrays of loudspeakers. Through theoretical analysis, we demonstrate that recursive multi-channel CTC implementations are intrinsically non-causal under general conditions, making a direct realtime realisation infeasible without significantly compromising the system performance.
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WASPAA2025 - Fazi_et_al
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Accepted/In Press date: 2025
Venue - Dates:
Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), , Tahoe City, United States, 2027-10-12
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Local EPrints ID: 508210
URI: http://eprints.soton.ac.uk/id/eprint/508210
PURE UUID: 217c4c5a-069a-4626-a3a3-45a75275083a
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Date deposited: 14 Jan 2026 17:54
Last modified: 15 Jan 2026 03:06
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Contributors
Author:
Francesco Veronesi
Author:
Marcos F. Simon Galvez
Author:
Andreas Franck
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