Guralp Systems Scream - Manual (Page 43)

User guide
•
To create a band-pass filter, select both Highpass and Lowpass.
Enter values into the text boxes, or click in the graph with the
left and right mouse buttons to set the two corner frequencies.
When both filters are active, the individual filters are shown on
the graph in light blue.
•
Enter a value in the Gain (dB) box to change the gain of the
filter.
In the example above, the overall gain of the band-pass filter has
been set to 10 dB. This is done by applying a 5 dB gain to each
of the component filters. As a result, the light blue traces
appear 5 dB below the dark blue trace.
January 2014 43