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- W2019924949 abstract "Wave field synthesis (WFS) is a sound field reproduction technology which assumes that the reproduction environment is anechoic. A real reproduction space reduces the objective accuracy of WFS. This research involves the improvement of WFS performance by active noise control and adaptive filters. Simulations of sound field reproduction in a three-dimensional space show the physical possibility of progressive sound field reproduction in a closed space on the basis of optimal control of the reproduction errors at a sensor array. The proposed solution is adaptive wave field synthesis (AWFS). The originality of AWFS is the combination of the minimization of the reproduction error along with a penalty for any departure from the WFS solution. AWFS is theoretically analyzed on the basis of singular value decomposition. This suggests that the AWFS underlying mechanism is independent radiation mode control. Two adaptive algorithms for AWFS are developed. An experimental AWFS system is tested in different rooms (hemi-anechoic, laboratory, reverberant). It shows that AWFS performs better than WFS: AWFS significantly reduces the room effects on sound field reproduction. The algorithm based on independent radiation mode control contributes to the enlargement of the effective reproduction region. The thesis is written in French and in English." @default.
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- W2019924949 date "2008-02-01" @default.
- W2019924949 modified "2023-09-25" @default.
- W2019924949 title "Adaptive wave field synthesis" @default.
- W2019924949 doi "https://doi.org/10.1121/1.2828216" @default.
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