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	<id>https://elektronikforumet.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Snabb_fouriertransform</id>
	<title>Snabb fouriertransform - Versionshistorik</title>
	<link rel="self" type="application/atom+xml" href="https://elektronikforumet.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Snabb_fouriertransform"/>
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	<updated>2026-04-22T03:20:42Z</updated>
	<subtitle>Versionshistorik för denna sida på wikin</subtitle>
	<generator>MediaWiki 1.37.2</generator>
	<entry>
		<id>https://elektronikforumet.com/wiki/index.php?title=Snabb_fouriertransform&amp;diff=4650&amp;oldid=prev</id>
		<title>Blueint: länk: Arduinoos, Blog Archive</title>
		<link rel="alternate" type="text/html" href="https://elektronikforumet.com/wiki/index.php?title=Snabb_fouriertransform&amp;diff=4650&amp;oldid=prev"/>
		<updated>2013-02-08T16:58:36Z</updated>

		<summary type="html">&lt;p&gt;länk: Arduinoos, Blog Archive&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Äldre version&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Versionen från 8 februari 2013 kl. 16.58&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l3&quot;&gt;Rad 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Rad 3:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Externa länkar ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== Externa länkar ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [https://sv.wikipedia.org/wiki/Snabb_fouriertransform WP-sv: Snabb fouriertransform]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [https://sv.wikipedia.org/wiki/Snabb_fouriertransform WP-sv: Snabb fouriertransform]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;* [http://www.arduinoos.com/2010/10/fast-fourier-transform-fft/ Arduinoos  &amp;amp;raquo; Blog Archive   &amp;amp;raquo; Fast Fourier Transform (FFT) (Part 1)]&amp;lt;!--från http://elektronikforumet.com/forum/viewtopic.php?f=7&amp;amp;t=64255--&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Blueint</name></author>
	</entry>
	<entry>
		<id>https://elektronikforumet.com/wiki/index.php?title=Snabb_fouriertransform&amp;diff=4253&amp;oldid=prev</id>
		<title>Blueint: kortbeskrivning</title>
		<link rel="alternate" type="text/html" href="https://elektronikforumet.com/wiki/index.php?title=Snabb_fouriertransform&amp;diff=4253&amp;oldid=prev"/>
		<updated>2013-01-11T10:08:07Z</updated>

		<summary type="html">&lt;p&gt;kortbeskrivning&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Ny sida&lt;/b&gt;&lt;/p&gt;&lt;div&gt;En '''snabb fouriertransform''', på engelska '''fast Fourier transform''' ('''FFT'''), är en effektiv algoritm för att beräkna en diskret, begränsad fouriertransform som gör om samplingar över tiden till amplituder på olika frekvenser inom en specifik tidsrymd.  Vanligtvis kräver en diskret fouriertransform av en signal med &amp;lt;math&amp;gt;N&amp;lt;/math&amp;gt; sampelpunkter &amp;lt;math&amp;gt;N^2&amp;lt;/math&amp;gt; multiplikationer, men med hjälp av FFT sjunker denna siffra till i storleksordningen &amp;lt;math&amp;gt;N*\log\, N&amp;lt;/math&amp;gt; multiplikationer.&lt;br /&gt;
&lt;br /&gt;
== Externa länkar ==&lt;br /&gt;
* [https://sv.wikipedia.org/wiki/Snabb_fouriertransform WP-sv: Snabb fouriertransform]&lt;/div&gt;</summary>
		<author><name>Blueint</name></author>
	</entry>
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