ResetIIRFilter
Advanced Analysis Library Only
void ResetIIRFilter (IIRFilterPtr filterInformation);
Purpose
Sets the reset flag in the filterInfo filter structure so that the internal filter state information is reset to zero before the next cascade IIR filtering operation.
Example Code
/* How to use function ResetIIRFilter. */
double fs, fl, fh, x[256], y[256];
int type, order, n;
IIRFilterPtr filterInfo;
n = 256;
fs = 1000.0;
fl = 200.0;
order = 5;
type = 0; /* lowpass */
filterInfo = AllocIIRFilterPtr(type, order);
if(filterInfo!=0) {
Bw_CascadeCoef(fs, fl, fh, filterInfo);
Uniform(n, 17, x);
IIRCascadeFiltering(x, n, filterInfo, y);
Uniform(n,20,x);
ResetIIRFilter(filterInfo); /* Reset the filter for a new data set. */
IIRCascadeFiltering(x, n, filterInfo, y);
FreeIIRFilterPtr(filterInfo);
}
Parameters
| Input | ||
| Name | Type | Description |
| filterInformation | IIRFilterPtr | Pointer to the filter structure that contains the filter coefficients and the internal filter information. Refer to the AllocIIRFilterPtr function description for more information about the filter structure. |
Return Value
None.
Additional Information
Library: Advanced Analysis Library
Include file: analysis.h
LabWindows/CVI compatibility: LabWindows/CVI 4.0 and later