Sweet-spot-independent binaural reproduction with a listener-adaptive loudspeaker array
Sweet-spot-independent binaural reproduction with a listener-adaptive loudspeaker array
Adaptive cross-talk cancellation systems require a smooth and fast update of the control filters for different listening positions, which is often achieved by simultaneous filtering and cross-fading. An alternative method is presented here, in which the control filters are calculated analytically in real-time, assuming each acoustical source is represented by a point-monopole radiator. This allows for a time-domain formulation of each filter as a sum of gain-delay elements, rather than as a single finite impulse response (FIR) filter. This leads to a very simple signal processing scheme, wherein the gain-delay elements are varied to adapt the response towards the listener. The performance of the proposed system is evaluated by means of numerical simulations with a geometry based on a 28 point-source loudspeaker array.
Adaptive filtering, binaural audio, virtual acoustics, loudspeaker arrays
Simon Galvez, Marcos
777da25f-86fc-4a22-8ff1-ac2cbbfe27ae
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
5 September 2016
Simon Galvez, Marcos
777da25f-86fc-4a22-8ff1-ac2cbbfe27ae
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Simon Galvez, Marcos and Fazi, Filippo
(2016)
Sweet-spot-independent binaural reproduction with a listener-adaptive loudspeaker array.
Proceedings of the 22nd international congress on acoustics, , Buenos Aires, Brazil.
05 Sep 2016 - 09 Sep 2017 .
10 pp
.
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Conference or Workshop Item
(Paper)
Abstract
Adaptive cross-talk cancellation systems require a smooth and fast update of the control filters for different listening positions, which is often achieved by simultaneous filtering and cross-fading. An alternative method is presented here, in which the control filters are calculated analytically in real-time, assuming each acoustical source is represented by a point-monopole radiator. This allows for a time-domain formulation of each filter as a sum of gain-delay elements, rather than as a single finite impulse response (FIR) filter. This leads to a very simple signal processing scheme, wherein the gain-delay elements are varied to adapt the response towards the listener. The performance of the proposed system is evaluated by means of numerical simulations with a geometry based on a 28 point-source loudspeaker array.
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Published date: 5 September 2016
Venue - Dates:
Proceedings of the 22nd international congress on acoustics, , Buenos Aires, Brazil, 2016-09-05 - 2017-09-09
Keywords:
Adaptive filtering, binaural audio, virtual acoustics, loudspeaker arrays
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Local EPrints ID: 417505
URI: http://eprints.soton.ac.uk/id/eprint/417505
PURE UUID: b24f40e3-e7fb-4d47-a8ab-df267f1a0626
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Date deposited: 01 Feb 2018 17:30
Last modified: 16 Mar 2024 03:59
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