Individual listening zone with frequency-dependent trim of measured impulse responses
Individual listening zone with frequency-dependent trim of measured impulse responses
Acoustic Contrast Control (ACC) has been widely used to achieve individual audio delivery in shared environments. The effectiveness of this method is reduced when the control is performed in reverberant environments. Even if control filters are computed using measured transfer functions, the robustness of the system is affected by the presence of reverberation in the plant matrix. In this paper a new optimization method is presented to improve the ACC algorithm by applying a frequency-dependent windowing of the measured impulse response used for the filter computation, thus removing late reflections. The effects of this impulse response optimization are presented by means of sound zoning results obtained from experimental measurements performed in a car cabin.
Ebri, Michele
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Strozzi, Nicolo
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Fazi, Filippo
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Farina, Angelo
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Cattani, Luca
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Ebri, Michele
d4c30304-7354-42ab-b907-8fed8851f7fa
Strozzi, Nicolo
aa80d31a-56ef-4701-8708-4f1f6757a65d
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Farina, Angelo
e4b44b86-e471-473f-965e-4636fe97b7d4
Cattani, Luca
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Ebri, Michele, Strozzi, Nicolo, Fazi, Filippo, Farina, Angelo and Cattani, Luca
(2020)
Individual listening zone with frequency-dependent trim of measured impulse responses.
149th Audio Engineering Society Convention, Online, Virtual.
27 - 30 Oct 2020.
8 pp
.
(In Press)
Record type:
Conference or Workshop Item
(Paper)
Abstract
Acoustic Contrast Control (ACC) has been widely used to achieve individual audio delivery in shared environments. The effectiveness of this method is reduced when the control is performed in reverberant environments. Even if control filters are computed using measured transfer functions, the robustness of the system is affected by the presence of reverberation in the plant matrix. In this paper a new optimization method is presented to improve the ACC algorithm by applying a frequency-dependent windowing of the measured impulse response used for the filter computation, thus removing late reflections. The effects of this impulse response optimization are presented by means of sound zoning results obtained from experimental measurements performed in a car cabin.
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AES_149_Ebri_et_al_Individual Listening Zone with Frequency-Dependent Trim
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Accepted/In Press date: 9 August 2020
Venue - Dates:
149th Audio Engineering Society Convention, Online, Virtual, 2020-10-27 - 2020-10-30
Identifiers
Local EPrints ID: 449385
URI: http://eprints.soton.ac.uk/id/eprint/449385
PURE UUID: 9fa21db5-96c1-4d05-8a11-304b8be206b4
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Date deposited: 26 May 2021 16:32
Last modified: 17 Mar 2024 03:16
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Contributors
Author:
Michele Ebri
Author:
Nicolo Strozzi
Author:
Angelo Farina
Author:
Luca Cattani
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