Net Station Waveform Tools - College of Education & Human ...
Net Station Waveform Tools - College of Education & Human ...
Net Station Waveform Tools - College of Education & Human ...
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The IIR filter used by <strong>Net</strong> <strong>Station</strong> Viewer is <strong>of</strong> the elliptic type. The FIR filter used by<br />
<strong>Net</strong> <strong>Station</strong> Viewer and the Filtering <strong>Waveform</strong> Tool is <strong>of</strong> the Kaiser type. Consult the<br />
following references for more information on filter types:<br />
• Embree, P.M, & Danieli, D. (1999). C++ algorithms for digital signal processing.<br />
Upper Saddle River, New Jersey: Prentice Hall.<br />
• Oppenheim, A.V., & Schafer, R.W. (1975). Digital signal processing. Upper<br />
Saddle River, New Jersey: Prentice Hall.<br />
• Rabiner, R., & Gold, B. (1975). Theory and application <strong>of</strong> digital signal processing.<br />
Upper Saddle River, New Jersey: Prentice Hall.<br />
• Thede, L. (1996). Analog and digital filter design using C. Upper Saddle River,<br />
New Jersey: Prentice Hall.<br />
Flattening<br />
FIR filters flatten the first section <strong>of</strong> data, so filtering should usually be performed on<br />
continuous files before segmentation. The flattening can be seen in the preview<br />
window. The amount <strong>of</strong> flattening is a function <strong>of</strong> the sampling rate; in general, it<br />
tends to be about 600 ms at each end.<br />
<strong>Net</strong> <strong>Station</strong> <strong>Waveform</strong> <strong>Tools</strong> Technical Manual S-MAN-200-WFTR-001 • December 21, 2006<br />
12: Filtering<br />
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