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Huron & SNAP Documentation

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Wingen Windows Interface<br />

↓ To start Wingen<br />

Simwin — Wingen Tool<br />

The window function generator, supports a number of different<br />

window functions with various mainlobe and sidelobe trade<br />

offs. It can create these window functions in any of the formats<br />

supported by the SIM file format. It will also support two<br />

dimensional window functions.<br />

The windows supported are:<br />

• Uniform (rectangle).<br />

• Bartlett (triangle).<br />

• Von Hann.<br />

• Hamming.<br />

• Blackman.<br />

• Harris.<br />

• Blackman-Harris.<br />

Wingen generates windows functions in which the peaks of the<br />

function are situated at the beginning and end of the sequence.<br />

This means the function decays to zero in the centre of the<br />

vector. If it is necessary to place the peak in the centre of the<br />

function, use the Shift option in Wingen.<br />

The window functions that Wingen can produce are detailed in<br />

the Frequency Responses for Window Functions — SimTools<br />

Appendix 1 sub-section of the SIM Tools.<br />

• Select Windows Generator on the Simwin function menu.<br />

—or—<br />

Click .<br />

This will display the Wingen dialogue box (see Figure 71):<br />

Figure 71 — The Wingen windows generator interface<br />

HURON TECHNICAL MANUAL PAGE 225

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