As a general rule, it is suggested to try different values for the latency parameter and choose the
lower one that still gives satisfying equalization results for the particular application, basing on plotted
curves and listening tests.
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Target Curve
To set up a target magnitude curve, click the “EQ Target” button at the top left of the “Calculate FIR”
page, and the “EQ Target” window is shown.
In the “EQ Target” page, the magnitude response of the target curve (blue line), of the FIR filter (green
line) and of the IRxFIR (yellow curve) are overlaid. Curves in the plot can be hidden through the
corresponding checkboxes at the top right of the screen.
To change the target curve, up to ten parametric IIR filter is available. The IIR filter prototype is just a
drawing aid, since the target magnitude is included in the compensating FIR filter generation.
The parametric filter can be set by the controls at the botton of the screen or by dragging the cursors
in the plotting area.
