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DFD Build Filter from Lattice Coef (Digital Filter Design Toolkit)

LabVIEW Digital Filter Design Toolkit 8.2 Help
September 2006

NI Part Number:
371988A-01

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Creates a filter from lattice form coefficients. Example

lattice coef specifies the lattice form coefficients this VI uses to create the filter.
structure type specifies the structure of the filter.

13Lattice Allpass (basic sections)
14Lattice Allpass (one multiplier sections)
15Lattice Allpass (normalized sections)
16Lattice AR (basic sections)
17Lattice AR (one multiplier sections)
18Lattice AR (normalized sections)
19Lattice MA (minimum phase)
20Lattice MA (maximum phase)
21Lattice ARMA (basic sections) (default)
22Lattice ARMA (one multiplier sections)
23Lattice ARMA (normalized sections)
reflection coefficients specifies the lattice reflection coefficients of the filter.
ladder coefficients specifies the lattice ladder coefficients of the filter.
gain specifies the lattice gain.
error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source specifies the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
filter out returns a new filter.
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out front panel indicator and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

Example

Refer to the Create Filter from Lattice Coefficients VI in the labview\examples\Digital Filter Design\Getting Started directory for an example of using the DFD Build Filter from Lattice Coef VI.

 


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