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1004,West-CBD,No.139 Binhe Rd,Futian District,Shenzhen, China Post Code:518048
+86-18682200597
sales@szhaiwang.com
source:Industry News release time:2022-10-19 Hits: Popular:Infrared sensing module
1. The unit impulse response h (n) of the system is not zero at a finite number of n values;
2. The system function H (z) converges at | z |>0, and all poles are at z=0 (causal system);
3. The structure is mainly non recursive, with no feedback from output to input. However, some structures (such as frequency sampling structure) also contain the recursive part of feedback.
Let the unit impulse response h (n) of the FIR filter be a sequence of N points, 0 ≤ n ≤ N-1, then the system function of the filter is: H (z)=Σ h (n) * z ^ - k, that is, it has (N-1) order poles at z=0, and (N-1) zero points at any position in the finite z plane.
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