User`s manual

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Figure 3-7 Tutorial Filter Selection Window
21. Click on the Select button in the Filter 2 block and select Lowpass.
22. Click on the Control button in the Filter 1 block. The window in Figure 3-8 will appear:
Figure 3-8 Tutorial 1-Channel Adaptive Filter Control Window
This is the 1-Channel Adaptive Filter Control Window. It is used to select Filter Size, Adapt
Rate, and Prediction Span. It also permits configuration of the filter for Conditional
Adaptation.
23. Use the mouse to set all controls to match the settings shown in Figure 3-8*. Do not click on
the OK button at this time.
24. Listen to the filter OUTPUT through your headphones. Note the effect on the signal as the
Filter Active button is toggled between the in state (LED is lit RED) and the out state (LED is
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*Scroll bars are used throughout the PCAP II to adjust various filter parameters. Drag the scroll box "slider" or
click within the scroll bar to make coarse adjustments. Click on the scroll arrows on either end of the scroll bar to
make fine adjustments. The text boxes also allow precise entry of values.