Guralp-systems Scream Manual do Utilizador descarregar pdf (Página 47)

User guide

You can alter the size of window used by changing the value in

this selection box.

Using a smaller window size produces a smoother graph, at the

expense of losing information about lower frequencies. To

examine lower frequencies, you will need to increase the

window size; however, doing this will increase the noise visible

at high frequency.

4.3.4 Pre-sets

When you are happy with your filter design:

• Click to apply the filter to the Waveview window and

close the Filter Design window.

• Alternatively, click to apply the filter and leave the

Filter Design window open.

Ticking the Auto-Apply check-box makes the Filter Design window

apply immediately any changes you make to the filter. Since applying

a filter may take some time, you should not tick Auto-Apply if you are

viewing a large amount of data.

To save the design in Scream!'s configuration file, click and

enter a name for the filter. You can now select the filter from the

drop-down menu next to the Waveview window's Filter icon.

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Guralp-systems Scream Manual do Utilizador Página 47