Weighted orthogonal vector rejection method for loudspeaker-based binaural audio reproduction
Weighted orthogonal vector rejection method for loudspeaker-based binaural audio reproduction
A method for reproducing binaural audio over an array of loudspeakers is presented. The proposed method is based on spatially-matched filters and is shown to be, in general, more stable than the conventional inverse filter approach. The non-weighted formulation of the method introduces reductions in the reproduced pressure magnitude response at each control point and is therefore inherently lossy. On the other hand, far less error is introduced for
frequencies where the Hermitian angle between the row vectors of the plant matrix is close to ninety degrees. For sufficiently dense arrays, little error is introduced at mid-low and high frequencies. The trade-off between reductions in the reproduced target signals and crosstalk cancellation is controlled by introducing frequency dependent weights to the left and right channel filters. The weights that minimise the error are derived. It is shown that the optimal
weight solution emphasises achieved crosstalk cancellation over
loss less focusing.
Binaural audio, crosstalk cancellation, loudspeaker array, matched filter, sound field control
Hamdan, Eric Carlos
4a342d37-7fa9-45a2-8e9a-0a1a428dba7e
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
17 May 2021
Hamdan, Eric Carlos
4a342d37-7fa9-45a2-8e9a-0a1a428dba7e
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Hamdan, Eric Carlos and Fazi, Filippo
(2021)
Weighted orthogonal vector rejection method for loudspeaker-based binaural audio reproduction.
IEEE Xplore, 29.
Abstract
A method for reproducing binaural audio over an array of loudspeakers is presented. The proposed method is based on spatially-matched filters and is shown to be, in general, more stable than the conventional inverse filter approach. The non-weighted formulation of the method introduces reductions in the reproduced pressure magnitude response at each control point and is therefore inherently lossy. On the other hand, far less error is introduced for
frequencies where the Hermitian angle between the row vectors of the plant matrix is close to ninety degrees. For sufficiently dense arrays, little error is introduced at mid-low and high frequencies. The trade-off between reductions in the reproduced target signals and crosstalk cancellation is controlled by introducing frequency dependent weights to the left and right channel filters. The weights that minimise the error are derived. It is shown that the optimal
weight solution emphasises achieved crosstalk cancellation over
loss less focusing.
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Accepted/In Press date: 9 May 2021
Published date: 17 May 2021
Keywords:
Binaural audio, crosstalk cancellation, loudspeaker array, matched filter, sound field control
Identifiers
Local EPrints ID: 453026
URI: http://eprints.soton.ac.uk/id/eprint/453026
PURE UUID: b5732184-3a06-4a07-83ac-ec68d99e9b9c
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Date deposited: 07 Jan 2022 17:39
Last modified: 17 Mar 2024 03:16
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