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File:Window function (rectangular).svg

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Original file (SVG file, nominally 901 × 346 pixels, file size: 472 KB)

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Summary

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Description
English: Rectangular window and frequency response. I saved both plots in EPS, then I converted them to SVG with Scribus and merged them with Inkscape
Date
Source Own work based on: Window function (rectangular).png by Bob K
Author Alessio Damato
Other versions Derivative works of this file:  Window function and frequency response - Rectangular.svg: Image
SVG development
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Image The SVG code is valid.
Image This vector image was created with Inkscape.
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This file has been superseded by Window function and frequency response - Rectangular.svg. It is recommended to use the other file. Please note that deleting superseded images requires consensus.
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Source code

The logo of MATLAB – numerical computing environment
The logo of MATLAB – numerical computing environment
This media was created with MATLAB (numerical computing environment)
Here is a listing of the source used to create this file.

Deutsch ∙ English ∙ +/− 

N=128;
k=0:N-1;
dr = 60;
w = ones(1,N);

B = N*sum(w.^2)/sum(w)^2;   % noise bandwidth (bins)

H = abs(fft([w zeros(1,7*N)]));
H = fftshift(H);
H = H/max(H);
H = 20*log10(H);
H = max(0,dr+H);

figure
area(k,w,'FaceColor', [0 .4 .6])
xlim([0 N-1])
ylim([0 2])
set(gca,'XTick', [0 : 1/8 : 1]*(N-1))
set(gca,'XTickLabel','0| | | | | | | |N-1')
grid on
ylabel('amplitude')
xlabel('samples')
title('Window function (rectangular)')

figure
stem(([1:(8*N)]-1-4*N)/8,H,'-');
set(findobj('Type','line'),'Marker','none','Color',[.871 .49 0])
xlim([-4*N 4*N]/8)
ylim([0 dr])
set(gca,'YTickLabel','-60|-50|-40|-30|-20|-10|0')
grid on
ylabel('decibels')
xlabel('DFT bins')
title('Spectral "leakage" from a rectangularly windowed sinusoid')

Licensing

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Public domain This work has been released into the public domain by its author, Alessio Damato. This applies worldwide.
In some countries this may not be legally possible; if so:
Alessio Damato grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.


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This image (or all images in this category) uses inside labels or attached captions in a specific script or language and should be converted to a language neutral form. This would allow its use in all Wikimedia projects and, more importantly, all Wikimedia languages.

беларуская (тарашкевіца) ∙ català ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ suomi ∙ français ∙ magyar ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Bahasa Melayu ∙ Plattdüütsch ∙ Nederlands ∙ português ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ српски / srpski ∙ 中文 ∙ 中文（简体） ∙ +/−

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Date/TimeThumbnailDimensionsUserComment
current20:12, 22 October 2007Thumbnail for version as of 20:12, 22 October 2007901 × 346 (472 KB)Alejo2083 (talk | contribs)== Summary == {{Information |Description= rectangular window and frequency response |Source=self-made |Date=14-Dec-2005 |Author= Bob K, converted to SVG by ~~~ }} source: http://en.wikipedia.org/wiki/Window_Function author: http://en.wiki

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