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Recording medium, and identification equipment that records the identification method and identification program of unknown system by band-splitting adaptive filter
Recording medium, and identification equipment that records the identification method and identification program of unknown system by band-splitting adaptive filter
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机译:通过分带自适应滤波器记录未知系统的识别方法和识别程序的记录介质和识别设备
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摘要
PROBLEM TO BE SOLVED: To provide an identification method of an unknown system by a coefficient update algorithm for a band split adaptive filter with a short convergence time by using a limited arithmetic amount or a memory capacity.;SOLUTION: The identification device consists of an unknown system 108 that receives an input signal, a band split filter 102 that splits the received signal into a plurality of sub band reference input signals, an independent adaptive filter 106 that receives each sub band reference input signal, a coefficient update section 105 that updates its coefficient, a 2nd band split filter 109 that divides an output signal of the unknown system into a plurality of sub band main input signals, and an error signal calculation section 111 that calculates a sub band error signal being a difference between a plurality of sub band main input signals and a plurality of output signals of the adaptive filter, and any of a plurality of coefficient update algorithms is selected adaptively once for a period based on the reference input signal, the main input signal or an error signal and the coefficient of the adaptive filter is updated thereby.;COPYRIGHT: (C)2000,JPO
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