| 摘要 |
PURPOSE:To ensure the shift of the filter property only in the frequency axis direction with one kind of the variable coefficient by securing the constitution in that the arithmetic means is connected in series to the variable coefficient multiplier. CONSTITUTION:The sample-series filter contains at least one unit of the delay element plus more than one unit of the variable coefficient multiplier and adder and features the fixed transmission function to process the sampled signals. In such filter, an equation is shown as H0(Z)=alpha.Z<-1>/(1-Z<-2>), where Z is exp(FomegaT), us is the angular frequency and alpha is an integer except for zero respectively, with the sampling interval set to T sec. Means 2 to calculate transmission function H0(Z) is connected in series to variable multiplier 5. As a result, only one kind of the variable coefficient exists, and the filter property can be shifted only in the frequency axis direction. |
