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- W2123233419 abstract "In this paper, the feasibility of using active noise control inside personal computers is demonstrated by applying an adaptive filter to Hewlett-Packard's Blackbird 002 Gaming PC. Conditions relating the control signals and the sound heard by an external listener are presented as a means of evaluating the hardware design before applying the adaptive filter. A multichannel stochastic adaptive filter is derived by vectorizing the equations and applying gradient descent and Newton's method. For implementation purposes, data-based approximations to the gradient and hessian are provided. It is shown that a 6dB reduction in sound pressure level is obtainable by adding reference microphones, error microphones, a speaker, and some acoustical foam into the system even though the length of the noise cancelation system is small, approx. 6, compared to the fundamental wavelength of the noise, approx 23." @default.
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- W2123233419 date "2008-01-01" @default.
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- W2123233419 title "Multichannel Adaptive Stochastic Filtering for Active Noise Control in Personal Computers" @default.
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- W2123233419 doi "https://doi.org/10.3182/20080706-5-kr-1001.01718" @default.
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