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comparison m-toolbox/html_help/help/ug/specwin_create_content.html @ 0:f0afece42f48
Import.
| author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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| date | Wed, 23 Nov 2011 19:22:13 +0100 |
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| -1:000000000000 | 0:f0afece42f48 |
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| 1 | |
| 2 <p>To create a spectral window object, you call the <tt>specwin</tt> class constructor. The following | |
| 3 code fragment creates a 100-point Hanning window: | |
| 4 </p> | |
| 5 <div class="fragment"><pre> | |
| 6 >> w = specwin(<span class="string">'Hanning'</span>, 100) | |
| 7 -------- Hanning ------------ | |
| 8 | |
| 9 alpha: 0 | |
| 10 psll: 31.5 | |
| 11 rov: 50 | |
| 12 nenbw: 1.5 | |
| 13 w3db: 1.4382 | |
| 14 flatness: -1.4236 | |
| 15 ws: 50 | |
| 16 ws2: 37.5 | |
| 17 win: 100 | |
| 18 | |
| 19 ----------------------------- | |
| 20 </pre></div> | |
| 21 <p><a href="specwin_description.html">List of available window functions</a></p> | |
| 22 <p> | |
| 23 In the special case of creating a Kaiser window, the additional input parameter, PSLL, must be | |
| 24 supplied. For example, the following code creates a 100-point Kaiser window with -150dB peak | |
| 25 side-lobe level: | |
| 26 </p> | |
| 27 <div class="fragment"><pre> | |
| 28 >> w = specwin(<span class="string">'Kaiser'</span>, 100, 150) | |
| 29 -------- Kaiser ------------ | |
| 30 | |
| 31 alpha: 6.18029 | |
| 32 psll: 150 | |
| 33 rov: 73.3738 | |
| 34 nenbw: 2.52989 | |
| 35 w3db: 2.38506 | |
| 36 flatness: -0.52279 | |
| 37 ws: 28.2558 | |
| 38 ws2: 20.1819 | |
| 39 win: 100 | |
| 40 | |
| 41 ---------------------------- | |
| 42 </pre></div> |