Influence of back wall reflections on Crosstalk Cancellation systems with directional loudspeakers
Influence of back wall reflections on Crosstalk Cancellation systems with directional loudspeakers
Crosstalk Cancellation (CTC) is a sound-field control technology used to deliver binaural signals over loudspeakers. This study investigates the effect of back wall reflections – occurring when the loudspeakers are positioned between the listener and a reflective wall – on CTC performance as a function of various parameters, including the positions of the listener and loudspeakers relative to the wall, and the directivity of the loudspeakers. Reflections are modelled using the Image Source Method (ISM), which simulates the contribution of reflection by superimposing the pressure field of the loudspeaker array with that of a mirrored array source. The directivity of the loudspeakers is simulated using directivity filters obtained from an open-access database. This approach offers a more realistic acoustic simulation than traditional analytical models. CTC performance is evaluated in the time and frequency domains using Neumann KU 100 HRTFs and Tikhonov regularisation. The impact of reflections is also quantified with a proposed error metric based on the Frobenius norm of the crosstalk matrix, which supports the simulation findings.
Back Wall Reflections, Crosstalk Cancellation, Image Source Method, Loudspeaker Directivity, Spatial Audio
Veronesi, Francesco
e8790129-89f4-4f8b-8a28-9a337df98b69
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Hollebon, Jacob
75e4dd71-cfb5-4d28-82a5-7ee1bee73207
17 October 2025
Veronesi, Francesco
e8790129-89f4-4f8b-8a28-9a337df98b69
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Hollebon, Jacob
75e4dd71-cfb5-4d28-82a5-7ee1bee73207
Veronesi, Francesco, Fazi, Filippo and Hollebon, Jacob
(2025)
Influence of back wall reflections on Crosstalk Cancellation systems with directional loudspeakers.
In 2025 Immersive and 3D Audio: from Architecture to Automotive (I3DA).
IEEE.
10 pp
.
(doi:10.1109/I3DA65421.2025.11202055).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Crosstalk Cancellation (CTC) is a sound-field control technology used to deliver binaural signals over loudspeakers. This study investigates the effect of back wall reflections – occurring when the loudspeakers are positioned between the listener and a reflective wall – on CTC performance as a function of various parameters, including the positions of the listener and loudspeakers relative to the wall, and the directivity of the loudspeakers. Reflections are modelled using the Image Source Method (ISM), which simulates the contribution of reflection by superimposing the pressure field of the loudspeaker array with that of a mirrored array source. The directivity of the loudspeakers is simulated using directivity filters obtained from an open-access database. This approach offers a more realistic acoustic simulation than traditional analytical models. CTC performance is evaluated in the time and frequency domains using Neumann KU 100 HRTFs and Tikhonov regularisation. The impact of reflections is also quantified with a proposed error metric based on the Frobenius norm of the crosstalk matrix, which supports the simulation findings.
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Published date: 17 October 2025
Keywords:
Back Wall Reflections, Crosstalk Cancellation, Image Source Method, Loudspeaker Directivity, Spatial Audio
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Local EPrints ID: 507166
URI: http://eprints.soton.ac.uk/id/eprint/507166
PURE UUID: 7f2dec94-f7ce-40be-a8ff-76ae1b428c38
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Date deposited: 28 Nov 2025 17:35
Last modified: 29 Nov 2025 03:04
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Author:
Francesco Veronesi
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