18.3 IIR Filters (Pro Only)

IIR-Filter

IIR (Infinite Impulse Response) filters are filters with infinite impulse response. Since Origin 9.0, it is possible to design, analyze, and implement IIR (Infinite Impulse Response) digital filters. The IIR filter in Origin supports four methods, including Butterworth, Chebyshev Type I, Chebyshev Type II, and Elliptic. This provides more choices in signal processing. A preview panel is provided to enable real-time visualization of specified parameters and corresponding results.

To use IIR Filter

1. Make a workbook or a graph active.
2. Select Analysis: Signal Processing: IIR Filter from the Origin menu.