PI FILTER DESIGNER FULL
The filtering VIs included in the LabVIEW Full or Professional Development System are coefficients-oriented.In general, three-stage filters are more efficient than two-stage filters. The DFD Narrowband Filter Design VI takes advantage of cascaded integrator comb (CIC) filters, with which you can produce three-stage filters. The FIR Narrowband Coefficients VI in LabVIEW Full or Professional Development System produces at most two-stage filters.The Digital Filter Design Toolkit supports more filter structures than LabVIEW Full or Professional Development System.The outputs of the classical design methods from LabVIEW Full or Professional Development System filtering VIs might be different from the outputs computed from the Digital Filter Design Toolkit because the two sets of VIs use different design algorithms.With the Digital Filter Design Toolkit, you can specify arbitrary magnitude and phase response for any type of filters. The filtering VIs included in the LabVIEW Full or Professional Development System offer limited phase selections.The Digital Filter Design Toolkit contains classical design methods as well as optimal solutions. The filtering VIs included in the LabVIEW Full or Professional Development System do not provide optimal solutions, except for the Equi-Ripple method.The following list explains the main differences between the filtering VIs in the LabVIEW Full or Professional Development System and the Digital Filter Design Toolkit.
PI FILTER DESIGNER HOW TO
This document explains the major differences between the two sets of VIs, lists the similar VIs, and provides examples that demonstrate how to convert filters designed with the LabVIEW Full or Professional Development System for use in the Digital Filter Design Toolkit and vice versa. In general, the Digital Filter Design Toolkit provides greater capabilities including, but not limited to, support for arbitrary phase and magnitude specifications and fixed-point filter design.Īlthough the two sets of VIs have similar functionality, their results might not be the same because the design algorithms are different. For example, the Butterworth Coefficients VI in LabVIEW Full or Professional Development System is similar to the Butterworth Design functionality from the Digital Filter Design Toolkit. Also, the Parks-McClellan VI in LabVIEW Full or Professional Development System is similar to the Remez Design VI from the Digital Filter Design Toolkit. The LabVIEW Digital Filter Design Toolkit contains several filter design tools that are similar to the filtering tools included with the LabVIEW Full or Professional Development System.
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