Converts IIR filter coefficients from the cascade form to the direct form. Details
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IIR Filter Cluster contains the cascade form of IIR filter coefficients. It contains three elements: filter structure, Reverse Coefficients, and Forward Coefficients.
This cluster is the output from one of the IIR coefficient design VIs: Butterworth Coefficients, Bessel Coefficients, Chebyshev Coefficients, Elliptic Coefficients, or Inv Chebyshev Coefficients.
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Reverse Coefficients contain the direct form, reverse coefficients. | ||||||
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Forward Coefficients contain the direct form, forward coefficients. |
As an example, you can convert a cascade filter, composed of two second-order stages, to a direct form filter as follows.
Refer to IIR Cascade Filter VI for information about cascade form filtering and IIR Filter VI for information on direct form filtering.