| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: when some of the data input to an FIR (Finite Impulse Response) digital filter significantly deviate from the true data, an output of the digital filter is changed.SOLUTION: Probability density function values f(x) (k is "n" integers from 0 to (n-1)) are specified by a mean value m calculated based on individual data xto xstored in "n" delay elements Dto D, and standard deviation σ calculated based on differences of the average value m and individual data xto x, and are set as amplification factors (namely, filter coefficients) of amplifiers Ato A. Signals output from the multipliers Ato Aare input to an adder SUM, and the added result is input to a divider DIV. The divider DIV performs division operation (÷(sum of a), k=0 to (n-1)), and a filter output Y is obtained. |
