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Convention Paper

Individual Listening Zone with Frequency-Dependent Trim of Measured Impulse Responses

Authors: Ebri, Michele; Strozzi, Nicolo; Fazi, Filippo Maria; Farina, Angelo; Cattani, Luca

AES Convention 149 · Paper 10409 · October 2020

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.

Details

Published in
AES Convention 149
AES Convention
149
Paper number
10409
Publication date
October 6, 2020
Session subject
Audio Processing
Affiliation
University of Parma, Italy; ASK Industries, Italy; University of Southampton, UK (See document for exact affiliation information.)
Type
Convention Paper