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><channel><title>Prosig Noise &#38; Vibration Blog &#187; spikes : Noise &amp; Vibration Blog : What You Need To Know About Noise &amp; Vibration Measurement</title> <atom:link href="http://blog.prosig.com/tag/spikes/feed/" rel="self" type="application/rss+xml" /><link>http://blog.prosig.com</link> <description>Telling you what you need to know about noise &#38; vibration</description> <lastBuildDate>Wed, 25 Jan 2012 14:42:00 +0000</lastBuildDate> <language>en</language> <sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>1</sy:updateFrequency> <generator>http://wordpress.org/?v=3.3.1</generator> <item><title>Interpolation Versus Resampling To Increase The Sample Rate</title><link>http://blog.prosig.com/2009/06/22/interpolation-versus-resampling-to-increase-the-sample-rate/</link> <comments>http://blog.prosig.com/2009/06/22/interpolation-versus-resampling-to-increase-the-sample-rate/#comments</comments> <pubDate>Mon, 22 Jun 2009 14:12:21 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[decimate]]></category> <category><![CDATA[decimation]]></category> <category><![CDATA[interpolate]]></category> <category><![CDATA[interpolation]]></category> <category><![CDATA[Lagrange]]></category> <category><![CDATA[Nyquist]]></category> <category><![CDATA[resample]]></category> <category><![CDATA[sinc]]></category> <category><![CDATA[spikes]]></category><guid
isPermaLink="false">http://blog.prosig.com/?p=194</guid> <description><![CDATA[These are two different techniques aimed at different objectives. First consider a simple sinewave that has been sampled close to the Nyquist frequency (sample rate/2). Visually this looks very pointy. We...]]></description> <wfw:commentRss>http://blog.prosig.com/2009/06/22/interpolation-versus-resampling-to-increase-the-sample-rate/feed/</wfw:commentRss> <slash:comments>5</slash:comments> </item> <item><title>Cleaning Up Data</title><link>http://blog.prosig.com/2003/09/22/cleaning-up-data/</link> <comments>http://blog.prosig.com/2003/09/22/cleaning-up-data/#comments</comments> <pubDate>Mon, 22 Sep 2003 14:17:08 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[de-spike]]></category> <category><![CDATA[despike]]></category> <category><![CDATA[filter]]></category> <category><![CDATA[spikes]]></category><guid
isPermaLink="false">http://blog.prosig.com/2003/09/22/cleaning-up-data/</guid> <description><![CDATA[When we have a very noisy signal with a large number of spikes and signal bursts then if all else fails try Median Filtering. This is a technique often used...]]></description> <wfw:commentRss>http://blog.prosig.com/2003/09/22/cleaning-up-data/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Data Smoothing : RC Filtering And Exponential Averaging</title><link>http://blog.prosig.com/2003/04/28/data-smoothing-rc-filtering-and-exponential-averaging/</link> <comments>http://blog.prosig.com/2003/04/28/data-smoothing-rc-filtering-and-exponential-averaging/#comments</comments> <pubDate>Mon, 28 Apr 2003 15:18:11 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[filter]]></category> <category><![CDATA[smoothing]]></category> <category><![CDATA[spikes]]></category><guid
isPermaLink="false">http://blog.prosig.com/2003/04/28/data-smoothing-rc-filtering-and-exponential-averaging/</guid> <description><![CDATA[What are RC Filtering and Exponential Averaging and how do they differ? The answer to the second part of the question is that they are the same process! If one...]]></description> <wfw:commentRss>http://blog.prosig.com/2003/04/28/data-smoothing-rc-filtering-and-exponential-averaging/feed/</wfw:commentRss> <slash:comments>7</slash:comments> </item> <item><title>Smoothing Spectral Data</title><link>http://blog.prosig.com/2002/07/15/smoothing-spectral-data/</link> <comments>http://blog.prosig.com/2002/07/15/smoothing-spectral-data/#comments</comments> <pubDate>Mon, 15 Jul 2002 16:23:56 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[de-spike]]></category> <category><![CDATA[despike]]></category> <category><![CDATA[nvh]]></category> <category><![CDATA[smoothing]]></category> <category><![CDATA[spikes]]></category><guid
isPermaLink="false">http://blog.prosig.com/2002/07/15/smoothing-spectral-data/</guid> <description><![CDATA[Sometimes data has spikes which are clearly artefacts of the processing or are due to some other external source. One is used to seeing these on time series but in...]]></description> <wfw:commentRss>http://blog.prosig.com/2002/07/15/smoothing-spectral-data/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Don’t Let Spikes Spoil Your Data</title><link>http://blog.prosig.com/2001/06/06/dont-let-spikes-spoil-your-data/</link> <comments>http://blog.prosig.com/2001/06/06/dont-let-spikes-spoil-your-data/#comments</comments> <pubDate>Wed, 06 Jun 2001 16:50:06 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[signal processing]]></category> <category><![CDATA[de-spike]]></category> <category><![CDATA[despike]]></category> <category><![CDATA[spikes]]></category><guid
isPermaLink="false">http://blog.prosig.com/2001/06/06/dont-let-spikes-spoil-your-data/</guid> <description><![CDATA[In many real-world applications it is impossible to avoid &#8220;spikes&#8221; or &#8220;dropouts&#8221; in data that we record. Many people assume that these only cause problems with their data if they...]]></description> <wfw:commentRss>http://blog.prosig.com/2001/06/06/dont-let-spikes-spoil-your-data/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> <item><title>Getting Rid Of Spikes</title><link>http://blog.prosig.com/2001/06/06/getting-rid-of-spikes/</link> <comments>http://blog.prosig.com/2001/06/06/getting-rid-of-spikes/#comments</comments> <pubDate>Wed, 06 Jun 2001 07:38:46 +0000</pubDate> <dc:creator>Dr Colin Mercer</dc:creator> <category><![CDATA[applications]]></category> <category><![CDATA[signal processing]]></category> <category><![CDATA[aerospace]]></category> <category><![CDATA[de-spike]]></category> <category><![CDATA[despike]]></category> <category><![CDATA[flight test]]></category> <category><![CDATA[spikes]]></category><guid
isPermaLink="false">http://blog.prosig.com/2001/06/06/getting-rid-of-spikes/</guid> <description><![CDATA[For various reasons data captured in the real world often contains spikes that will give erroneous results when analysed. DATS for Windows provides various ways of editing and removing these...]]></description> <wfw:commentRss>http://blog.prosig.com/2001/06/06/getting-rid-of-spikes/feed/</wfw:commentRss> <slash:comments>0</slash:comments> </item> </channel> </rss>
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