Signal Processing Toolbox

Analyzing the Filter

Once you've designed the filter, you can view the following filter response characteristics in the display region or in a separate window (see Displaying the Response in FVTool):

• Magnitude response
• Phase response
• Overlaid magnitude and phase responses
• Group delay response
• Impulse response
• Step response
• Pole-zero plot
• Zero-phase response--available from the y-axis context menu in a Magnitude or Magnitude and Phase response plot.

You can also display the filter coefficients in this region.

For all the analysis methods, except zero-phase response, you can access them from the Analysis menu, the Analysis Parameters dialog box from the context menu, or by using the toolbar buttons. For zero-phase, right-click on the y-axis of the plot and select Zero-phase from the context menu.

For example, to look at the filter's magnitude response, select the Magnitude Response button  on the toolbar.

Computing the Filter Coefficients

Using Data Markers