File:Kbd-window.jpg
Kbd-window.jpg (510 × 425 pixels, file size: 126 KB, MIME type: image/jpeg)
Captions
DescriptionKbd-window.jpg |
English: Kaiser-Bessel derived (KBD) window function for different alpha values. |
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Date | ||||||
Source | Own work | |||||
Author | Bob K | |||||
Permission (Reusing this file) |
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Other versions |
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Source code InfoField | N Matlabgraphics_toolkit gnuplot
N = 129;
M = N-1;
colors = [0 0 1; 0 1 0; 0 1 1; 1 0 1];
alphas = [0.64 2.56 7.68 32];
figure
title('Kaiser-Bessel-derived window functions')
xlim([0 2*M-1])
ylim([0 1.1])
grid on
ylabel(' ') % create left margin
set(gca,'XTick', [0 : 1/8 : 1]*(2*M-1))
set(gca,'XTickLabel',[' 0'; ' '; ' '; ' '; ' '; ' '; ' '; ' '; '2M-1 '])
set(gca,'YTick', [0 0.2 0.4 0.6 0.707 0.8 1.0])
text(2, 1.05, 'd_n', 'fontsize', 14)
text(100, -0.05, '\leftarrow n \rightarrow')
hold on
for graph = 1:4
alpha = alphas(graph);
color = colors(graph,:);
w = besseli(0,pi*alpha*sqrt(1-(2*(0:M)/M -1).^2))/besseli(0,pi*alpha);
d = zeros(1,2*M);
for n=0:M-1
d(1+n) = sum(w(1+(0:n)));
end
for n=M:2*M-1
d(1+n) = sum(w(1+(0:2*M-1-n)));
end
d = sqrt(d/sum(w(1+(0:M))));
plot(0:2*M-1, d, 'color', color, 'linewidth', 2)
end
hold off
text(96, .47, '\alpha=0.64')
text(96, .40, '\alpha=2.56')
text(96, .33, '\alpha=7.68')
text(96, .26, '\alpha=32')
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Source code InfoField | SVG code
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Original upload log
[edit]The 5/1/2009 version is a derivative work of the following image:
- File:Kbd-window.svg licensed with PD-self
- 2008-02-29T21:14:28Z RetoGalli 560x420 (32379 Bytes) {{Information |Description=Kaiser-Bessel derived (KBD) window |Source=self-made with Matlab |Date=02/29/2008 |Author= [[User:RetoGalli|RetoGalli]]}}
Uploaded with derivativeFX
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:03, 1 March 2013 | 510 × 425 (126 KB) | Bob K (talk | contribs) | Add title and tickmark @ y=0.707 | |
21:01, 27 February 2013 | 502 × 390 (121 KB) | Bob K (talk | contribs) | Upload version that can be regenerated from new Octave script (to be attached). | ||
23:55, 30 April 2009 | 512 × 411 (61 KB) | Bob K (talk | contribs) | {{Information |Description=Kaiser-Bessel derived (KBD) window |Source=*File:Kbd-window.svg |Date=2009-05-01 00:54 (UTC) |Author=*File:Kbd-window.svg: RetoGalli *derivative work: ~~~ |Permission=see below |other_versions= }} |
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