ANC convergence factor estimation as a function of frequency
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United States of America Patent
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Oct 3, 2017
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N/A
app pub date -
Dec 1, 2016
filing date -
Dec 3, 2015
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Abstract
A method of operating an audio system in a vehicle includes providing m number of microphones disposed within a passenger compartment of the vehicle. The microphones produce a plurality of microphone signals. Within the passenger compartment of the vehicle, k number of loudspeakers are provided. A plurality of convergence factors μ for use in performing active noise control are estimated. The estimating includes calculating an Eigen value λ(ω) of an autocorrelation matrix of a passenger compartment transfer function as
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