Table Of Contents

Filter Conversion (G Dataflow)

Version:
    Last Modified: March 15, 2017

    Converts a filter from the IIR cascade form to direct form.

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    filter in

    The input IIR cascade filter.

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    filter structure

    Structure of the input filter.

    This input can only be IIR Cascade 2nd Order or IIR Cascade 4th Order.

    Name Value Description
    IIR Cascade 2nd Order 0 Uses IIR second-order filter stages.
    IIR Cascade 4th Order 1 Uses IIR fourth-order filter stages.
    IIR Direct 2 Uses the direct-form IIR filter.
    FIR 3 Uses the FIR filter.

    Default: IIR Cascade 2nd Order

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    forward coefficients

    Forward coefficients of the filter.

    Default: 0

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    reverse coefficients

    Reverse coefficients of the filter.

    Default: 0

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    sampling frequency

    The sampling frequency in Hz.

    This value must be greater than zero.

    Default: 0

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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    filter out

    The output IIR direct filter.

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    filter structure

    Structure of the output filter.

    This output always returns IIR Direct.

    Name Value Description
    IIR Cascade 2nd Order 0 Uses IIR second-order filter stages.
    IIR Cascade 4th Order 1 Uses IIR fourth-order filter stages.
    IIR Direct 2 Uses the direct-form IIR filter.
    FIR 3 Uses the FIR filter.
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    forward coefficients

    The direct-form, forward coefficients.

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    reverse coefficients

    The direct-form, reverse coefficients.

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    sampling frequency

    The sampling frequency in Hz.

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: This product does not support FPGA devices


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