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	<title>Prosig Noise &#38; Vibration Blog &#187;  | Prosig Noise &amp; Vibration Blog</title>
	<atom:link href="http://blog.prosig.com/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>
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		<title>A Guide To Digital Filtering</title>
		<link>http://blog.prosig.com/2013/06/04/a-guide-to-digital-filtering/</link>
		<comments>http://blog.prosig.com/2013/06/04/a-guide-to-digital-filtering/#comments</comments>
		<pubDate>Tue, 04 Jun 2013 09:02:02 +0000</pubDate>
		<dc:creator>Dr Colin Mercer</dc:creator>
				<category><![CDATA[featured]]></category>
		<category><![CDATA[signal processing]]></category>
		<category><![CDATA[tutorials]]></category>
		<category><![CDATA[analogue]]></category>
		<category><![CDATA[band pass filter]]></category>
		<category><![CDATA[cut-off]]></category>
		<category><![CDATA[digital filtering]]></category>
		<category><![CDATA[digital filters]]></category>
		<category><![CDATA[frequency content]]></category>
		<category><![CDATA[high pass filter]]></category>
		<category><![CDATA[low pass filter]]></category>
		<category><![CDATA[sample rate]]></category>
		<category><![CDATA[sampling rate]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3750</guid>
		<description><![CDATA[Understanding filters is actually simpler than it may first seem. Creating a filter is another story; it’s like being able to drive a car without having to know the intricate details of how the engine and its electronics work. When dealing with filters there are two separate issues: one to do with the sampling rate [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/06/04/a-guide-to-digital-filtering/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Come and see Prosig at SAE 2013 Noise and Vibration Conference and Exhibition</title>
		<link>http://blog.prosig.com/2013/05/14/come-and-see-prosig-at-sae-2013-noise-and-vibration-conference-and-exhibition/</link>
		<comments>http://blog.prosig.com/2013/05/14/come-and-see-prosig-at-sae-2013-noise-and-vibration-conference-and-exhibition/#comments</comments>
		<pubDate>Tue, 14 May 2013 08:34:11 +0000</pubDate>
		<dc:creator>Prosig</dc:creator>
				<category><![CDATA[news]]></category>
		<category><![CDATA[conference]]></category>
		<category><![CDATA[exhibition]]></category>
		<category><![CDATA[Grand Rapids]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[presentation]]></category>
		<category><![CDATA[Prosig]]></category>
		<category><![CDATA[SAE]]></category>
		<category><![CDATA[show]]></category>
		<category><![CDATA[vibration]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3964</guid>
		<description><![CDATA[If you are visiting the SAE 2013 Noise and Vibration Conference and Exhibition in Grand Rapids (May 20th &#8211; 23rd) then please come along and see us at booth 409. Ken Goward &#38; John Mathey of Prosig USA will be at the show along with Adrian Lincoln from the Prosig in the UK. They will [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/05/14/come-and-see-prosig-at-sae-2013-noise-and-vibration-conference-and-exhibition/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>A Different Way Of Averaging &#8211; Time Synchronous Averaging</title>
		<link>http://blog.prosig.com/2013/04/02/a-different-way-of-averaging-time-synchronous-averaging/</link>
		<comments>http://blog.prosig.com/2013/04/02/a-different-way-of-averaging-time-synchronous-averaging/#comments</comments>
		<pubDate>Tue, 02 Apr 2013 09:33:27 +0000</pubDate>
		<dc:creator>John Mathey</dc:creator>
				<category><![CDATA[featured]]></category>
		<category><![CDATA[signal processing]]></category>
		<category><![CDATA[tutorials]]></category>
		<category><![CDATA[averaging]]></category>
		<category><![CDATA[frequency domain]]></category>
		<category><![CDATA[frequency spectrum]]></category>
		<category><![CDATA[pulse data]]></category>
		<category><![CDATA[pulse signal]]></category>
		<category><![CDATA[random signal]]></category>
		<category><![CDATA[synchronous averaging]]></category>
		<category><![CDATA[time blocks]]></category>
		<category><![CDATA[time domain]]></category>
		<category><![CDATA[time measurement]]></category>
		<category><![CDATA[time signal]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3839</guid>
		<description><![CDATA[Assuming one wants a frequency spectrum from an acquired time measurement, it is generally accepted that averaging of a signal in the time domain is not very useful due to the randomness of the start of the time block used to calculate the Fourier transforms to be averaged.  If there is a way to synchronize [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/04/02/a-different-way-of-averaging-time-synchronous-averaging/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>10 More Cool Engineering Videos</title>
		<link>http://blog.prosig.com/2013/03/12/10-more-cool-engineering-videos/</link>
		<comments>http://blog.prosig.com/2013/03/12/10-more-cool-engineering-videos/#comments</comments>
		<pubDate>Tue, 12 Mar 2013 08:21:08 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[featured]]></category>
		<category><![CDATA[videos]]></category>
		<category><![CDATA[acoustics]]></category>
		<category><![CDATA[anechoic]]></category>
		<category><![CDATA[anechoic chamber]]></category>
		<category><![CDATA[Arup]]></category>
		<category><![CDATA[carbon fiber]]></category>
		<category><![CDATA[carbon fibre]]></category>
		<category><![CDATA[F1]]></category>
		<category><![CDATA[fire]]></category>
		<category><![CDATA[Formula 1]]></category>
		<category><![CDATA[Formula Student]]></category>
		<category><![CDATA[mercedes]]></category>
		<category><![CDATA[michael schumacher]]></category>
		<category><![CDATA[moon]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[space]]></category>
		<category><![CDATA[space balloon]]></category>
		<category><![CDATA[vibration]]></category>
		<category><![CDATA[video]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=1076</guid>
		<description><![CDATA[Our previous collection of cool engineering videos in 2010 proved so popular that we just had to make another list. So here we present another 10 really cool engineering videos. These videos highlight just why we at Prosig enjoy working with engineers in so many different fields. And why we ourselves took up engineering in [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/03/12/10-more-cool-engineering-videos/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Quantifying Signals &#8211; Peak, Peak-to-Peak, &amp; RMS metrics</title>
		<link>http://blog.prosig.com/2013/02/26/quantifying-signals-peak-peak-to-peak-rms-metrics/</link>
		<comments>http://blog.prosig.com/2013/02/26/quantifying-signals-peak-peak-to-peak-rms-metrics/#comments</comments>
		<pubDate>Tue, 26 Feb 2013 08:09:56 +0000</pubDate>
		<dc:creator>John Mathey</dc:creator>
				<category><![CDATA[featured]]></category>
		<category><![CDATA[signal processing]]></category>
		<category><![CDATA[dc voltage]]></category>
		<category><![CDATA[magnitude]]></category>
		<category><![CDATA[peak to peak]]></category>
		<category><![CDATA[peak value]]></category>
		<category><![CDATA[rms]]></category>
		<category><![CDATA[rms voltage]]></category>
		<category><![CDATA[root mean square]]></category>
		<category><![CDATA[statistical measure]]></category>
		<category><![CDATA[time domain]]></category>
		<category><![CDATA[time signal]]></category>
		<category><![CDATA[vpp]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3661</guid>
		<description><![CDATA[Anytime you measure something which is changing with time, there are multiple ways to quantify the signal. For the purpose of this discussion, we will be talking about how to describe the signal in the time domain. There are several ways to describe what the time signal is doing. Perhaps the easiest to understand are the Peak and [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/02/26/quantifying-signals-peak-peak-to-peak-rms-metrics/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>What Is Hammer Impact Testing?</title>
		<link>http://blog.prosig.com/2013/02/11/what-is-hammer-impact-testing/</link>
		<comments>http://blog.prosig.com/2013/02/11/what-is-hammer-impact-testing/#comments</comments>
		<pubDate>Mon, 11 Feb 2013 12:32:54 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[featured]]></category>
		<category><![CDATA[transducers]]></category>
		<category><![CDATA[tutorials]]></category>
		<category><![CDATA[videos]]></category>
		<category><![CDATA[accelerometer]]></category>
		<category><![CDATA[accelerometers]]></category>
		<category><![CDATA[frequency content]]></category>
		<category><![CDATA[frequency domain]]></category>
		<category><![CDATA[impact hammer]]></category>
		<category><![CDATA[impulse]]></category>
		<category><![CDATA[load cell]]></category>
		<category><![CDATA[measurement system]]></category>
		<category><![CDATA[modal testing]]></category>
		<category><![CDATA[mode shapes]]></category>
		<category><![CDATA[natural frequencies]]></category>
		<category><![CDATA[test structure]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3732</guid>
		<description><![CDATA[This is often also known as Modal Testing. It is a method of testing that allows us to calculate the natural frequencies (modes), modal masses, modal damping ratios and mode shapes of a test structure. This is commonly done using either impact hammer testing or shaker testing. Here we are going to deal only with impact [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/02/11/what-is-hammer-impact-testing/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>What Can I Do About Spikes In My Data?</title>
		<link>http://blog.prosig.com/2013/01/28/what-can-i-do-about-spikes-in-my-data/</link>
		<comments>http://blog.prosig.com/2013/01/28/what-can-i-do-about-spikes-in-my-data/#comments</comments>
		<pubDate>Mon, 28 Jan 2013 12:03:36 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[featured]]></category>
		<category><![CDATA[links]]></category>
		<category><![CDATA[signal processing]]></category>
		<category><![CDATA[tutorials]]></category>
		<category><![CDATA[anomalies]]></category>
		<category><![CDATA[DATS]]></category>
		<category><![CDATA[dropouts]]></category>
		<category><![CDATA[glitches]]></category>
		<category><![CDATA[median filter]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[noisy signal]]></category>
		<category><![CDATA[Prosig]]></category>
		<category><![CDATA[shaft encoder]]></category>
		<category><![CDATA[shaft encoders]]></category>
		<category><![CDATA[smooth]]></category>
		<category><![CDATA[smoothing]]></category>
		<category><![CDATA[spectral data]]></category>
		<category><![CDATA[spikes]]></category>
		<category><![CDATA[vibration]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3678</guid>
		<description><![CDATA[Whether you call them spikes, glitches, anomalies or data dropouts, these phenomena have been a problem to engineers ever since they started recording data. There are any number of reasons why these problems occur. Sometimes it may be possible to repeat a test, but more often a busy engineer doesn&#8217;t have time or the test [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/01/28/what-can-i-do-about-spikes-in-my-data/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Engine Model Being Put Through Its Paces</title>
		<link>http://blog.prosig.com/2013/01/23/engine-model-being-put-through-its-paces/</link>
		<comments>http://blog.prosig.com/2013/01/23/engine-model-being-put-through-its-paces/#comments</comments>
		<pubDate>Wed, 23 Jan 2013 12:38:23 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[applications]]></category>
		<category><![CDATA[videos]]></category>
		<category><![CDATA[angle domain]]></category>
		<category><![CDATA[camshaft]]></category>
		<category><![CDATA[crankshaft]]></category>
		<category><![CDATA[engine]]></category>
		<category><![CDATA[engine model]]></category>
		<category><![CDATA[haynes]]></category>
		<category><![CDATA[rotary encoder]]></category>
		<category><![CDATA[valves]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3695</guid>
		<description><![CDATA[Our engine model demonstrator being put through its paces. Runups, rundowns and &#8216;overclocking&#8217; &#160;]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/01/23/engine-model-being-put-through-its-paces/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>What Are AC and DC Coupling?</title>
		<link>http://blog.prosig.com/2013/01/15/what-are-ac-and-dc-coupling/</link>
		<comments>http://blog.prosig.com/2013/01/15/what-are-ac-and-dc-coupling/#comments</comments>
		<pubDate>Tue, 15 Jan 2013 10:12:02 +0000</pubDate>
		<dc:creator>James Wren</dc:creator>
				<category><![CDATA[signal processing]]></category>
		<category><![CDATA[ac coupling]]></category>
		<category><![CDATA[ac signal]]></category>
		<category><![CDATA[ac signals]]></category>
		<category><![CDATA[ac source]]></category>
		<category><![CDATA[dc component]]></category>
		<category><![CDATA[dc coupling]]></category>
		<category><![CDATA[dc source]]></category>
		<category><![CDATA[optical cable]]></category>
		<category><![CDATA[sine wave]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3549</guid>
		<description><![CDATA[This is an important subject to understand when working in the signal processing field. First, what is coupling? Quite simply, coupling is the transfer of energy from one medium to another, for example, from a metallic wire to an optical cable. This transfer of energy may be desirable or undesirable. What is DC coupling? DC [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2013/01/15/what-are-ac-and-dc-coupling/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Come &amp; see Prosig at Testing Expo North America 2012</title>
		<link>http://blog.prosig.com/2012/10/23/3600/</link>
		<comments>http://blog.prosig.com/2012/10/23/3600/#comments</comments>
		<pubDate>Tue, 23 Oct 2012 14:48:54 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[news]]></category>
		<category><![CDATA[automotive testing expo]]></category>
		<category><![CDATA[capabilities]]></category>
		<category><![CDATA[exhibition]]></category>
		<category><![CDATA[intelligent data]]></category>
		<category><![CDATA[michigan office]]></category>
		<category><![CDATA[mobile systems]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[Prosig]]></category>
		<category><![CDATA[testing]]></category>
		<category><![CDATA[vibration]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3600</guid>
		<description><![CDATA[Prosig will be at Automotive Testing Expo North America from today, October 23rd, until October 25th 2012. Among the hardware and software on display will be some of the latest developments to Prosig P8000/DATS mobile systems. These include CAN-bus/GPS capabilities including CAN CCP new higher density channel counts new RapidResults technology for faster testing intelligent data capture [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/10/23/3600/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Understanding &amp; Measuring Noise</title>
		<link>http://blog.prosig.com/2012/09/25/understanding-measuring-noise/</link>
		<comments>http://blog.prosig.com/2012/09/25/understanding-measuring-noise/#comments</comments>
		<pubDate>Tue, 25 Sep 2012 13:31:57 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[applications]]></category>
		<category><![CDATA[links]]></category>
		<category><![CDATA[signal processing]]></category>
		<category><![CDATA[brake noise]]></category>
		<category><![CDATA[decibel]]></category>
		<category><![CDATA[digital tape recorders]]></category>
		<category><![CDATA[dynamic range]]></category>
		<category><![CDATA[microphone types]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[noise analysis]]></category>
		<category><![CDATA[noise environment]]></category>
		<category><![CDATA[noise floor]]></category>
		<category><![CDATA[noise measurement]]></category>
		<category><![CDATA[noise test]]></category>
		<category><![CDATA[Pascals]]></category>
		<category><![CDATA[power steering pump]]></category>
		<category><![CDATA[Prosig]]></category>
		<category><![CDATA[speech intelligibility]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3571</guid>
		<description><![CDATA[There are many reasons to measure and analyze noise. It may relate to legislation or regulations that limit noise in certain environments, we could be using the noise to investigate a related issue or maybe simply improving the noise of a vehicle or other product. Prosig are experts in measuring and analyzing noise. Follow the [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/09/25/understanding-measuring-noise/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>What is Resonance? (Part 2)</title>
		<link>http://blog.prosig.com/2012/08/20/what-is-resonance-part-2/</link>
		<comments>http://blog.prosig.com/2012/08/20/what-is-resonance-part-2/#comments</comments>
		<pubDate>Mon, 20 Aug 2012 10:51:48 +0000</pubDate>
		<dc:creator>James Wren</dc:creator>
				<category><![CDATA[signal processing]]></category>
		<category><![CDATA[clear peak]]></category>
		<category><![CDATA[frequency domain]]></category>
		<category><![CDATA[impact test]]></category>
		<category><![CDATA[magnitude]]></category>
		<category><![CDATA[modulus]]></category>
		<category><![CDATA[phase]]></category>
		<category><![CDATA[resonance]]></category>
		<category><![CDATA[resonant frequencies]]></category>
		<category><![CDATA[resonant frequency]]></category>
		<category><![CDATA[transfer functions]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3472</guid>
		<description><![CDATA[This article is a follow on from What Is Resonance? (Part 1) and answers some of the issues not covered in that post. How do you find the resonant frequency in the real world? What do you do when there is a situation with multiple peaks in the frequency domain data? How do you know [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/08/20/what-is-resonance-part-2/feed/</wfw:commentRss>
		<slash:comments>8</slash:comments>
		</item>
		<item>
		<title>2nd Annual Prosig / Portsmouth University Prize Awarded</title>
		<link>http://blog.prosig.com/2012/08/17/2nd-annual-prosig-portsmouth-university-prize-awarded/</link>
		<comments>http://blog.prosig.com/2012/08/17/2nd-annual-prosig-portsmouth-university-prize-awarded/#comments</comments>
		<pubDate>Fri, 17 Aug 2012 09:39:23 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[news]]></category>
		<category><![CDATA[frazer nash]]></category>
		<category><![CDATA[ground vehicles]]></category>
		<category><![CDATA[human vibration]]></category>
		<category><![CDATA[lifeboat]]></category>
		<category><![CDATA[mechanical engineering]]></category>
		<category><![CDATA[portsmouth university]]></category>
		<category><![CDATA[prize]]></category>
		<category><![CDATA[project]]></category>
		<category><![CDATA[project poster]]></category>
		<category><![CDATA[Prosig]]></category>
		<category><![CDATA[rnli]]></category>
		<category><![CDATA[rotational motion]]></category>
		<category><![CDATA[shocks]]></category>
		<category><![CDATA[Tamar Class]]></category>
		<category><![CDATA[technical advice]]></category>
		<category><![CDATA[water craft]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3525</guid>
		<description><![CDATA[The 2nd Annual Prosig Prize for Engineering at Portsmouth University has been awarded to Ashley Stehr for his project &#8220;Developing an engineering mechanism to reduce the effects of rapid rotational motion caused by the shocks inherent with high speed craft&#8221;. Ashley is in his third year studying for an MSc in Mechanical Engineering. His project [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/08/17/2nd-annual-prosig-portsmouth-university-prize-awarded/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Waterfall Analysis: Frequency Spectrum or Order Spectrum?</title>
		<link>http://blog.prosig.com/2012/07/25/waterfall-analysis-frequency-spectrum-or-order-spectrum/</link>
		<comments>http://blog.prosig.com/2012/07/25/waterfall-analysis-frequency-spectrum-or-order-spectrum/#comments</comments>
		<pubDate>Wed, 25 Jul 2012 08:55:39 +0000</pubDate>
		<dc:creator>John Mathey</dc:creator>
				<category><![CDATA[signal processing]]></category>
		<category><![CDATA[frequency components]]></category>
		<category><![CDATA[frequency resolution]]></category>
		<category><![CDATA[frequency spectra]]></category>
		<category><![CDATA[frequency spectrum]]></category>
		<category><![CDATA[fundamental frequency]]></category>
		<category><![CDATA[rotating machinery]]></category>
		<category><![CDATA[rotation frequency]]></category>
		<category><![CDATA[sampling rate]]></category>
		<category><![CDATA[smearing]]></category>
		<category><![CDATA[spectrum analysis]]></category>
		<category><![CDATA[tachometer]]></category>
		<category><![CDATA[waterfall]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3498</guid>
		<description><![CDATA[This article addresses two basic approaches to analyzing rotating machinery during transient (sweeping rpm) conditions.  The first is the traditional method which uses Frequency (FFT) Spectrum analysis at target rpm values throughout a run up or a coast down condition.  As discussed in a previous article on frequency resolution and smearing in waterfall analysis, there [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/07/25/waterfall-analysis-frequency-spectrum-or-order-spectrum/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Building a new test model</title>
		<link>http://blog.prosig.com/2012/07/18/building-a-new-test-model/</link>
		<comments>http://blog.prosig.com/2012/07/18/building-a-new-test-model/#comments</comments>
		<pubDate>Wed, 18 Jul 2012 08:56:33 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[applications]]></category>
		<category><![CDATA[videos]]></category>
		<category><![CDATA[build your own]]></category>
		<category><![CDATA[building]]></category>
		<category><![CDATA[camshaft]]></category>
		<category><![CDATA[construction]]></category>
		<category><![CDATA[crank]]></category>
		<category><![CDATA[demonstrations]]></category>
		<category><![CDATA[engine model]]></category>
		<category><![CDATA[haynes]]></category>
		<category><![CDATA[internal combustion engine]]></category>
		<category><![CDATA[model]]></category>
		<category><![CDATA[model engine]]></category>
		<category><![CDATA[pistons]]></category>
		<category><![CDATA[rotary encoder]]></category>
		<category><![CDATA[rotating machinery]]></category>
		<category><![CDATA[turbine]]></category>
		<category><![CDATA[variable speeds]]></category>
		<category><![CDATA[vibration signals]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3484</guid>
		<description><![CDATA[Recently, we decided it was about time we had a new model for testing, training and demonstrations. Specifically, we wanted something that would allow us to test the full capability of the standard tacho channels available on the P8000 systems and the optional advanced tacho card. Ideally, we would have obtained a V8 engine or [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/07/18/building-a-new-test-model/feed/</wfw:commentRss>
		<slash:comments>6</slash:comments>
		</item>
		<item>
		<title>Vibration Condition Monitoring Doesn&#8217;t Get More Mobile Than This!</title>
		<link>http://blog.prosig.com/2012/07/12/vibration-condition-monitoring-it-doesnt-get-any-more-mobile-than-this/</link>
		<comments>http://blog.prosig.com/2012/07/12/vibration-condition-monitoring-it-doesnt-get-any-more-mobile-than-this/#comments</comments>
		<pubDate>Thu, 12 Jul 2012 08:37:24 +0000</pubDate>
		<dc:creator>Don Davies</dc:creator>
				<category><![CDATA[applications]]></category>
		<category><![CDATA[3g devices]]></category>
		<category><![CDATA[compact solution]]></category>
		<category><![CDATA[condition monitoring system]]></category>
		<category><![CDATA[network router]]></category>
		<category><![CDATA[Prosig]]></category>
		<category><![CDATA[PROTOR]]></category>
		<category><![CDATA[remote access]]></category>
		<category><![CDATA[smartphone]]></category>
		<category><![CDATA[steam turbine]]></category>
		<category><![CDATA[using a router]]></category>
		<category><![CDATA[vibration levels]]></category>
		<category><![CDATA[vibration monitoring]]></category>
		<category><![CDATA[vibration problem]]></category>
		<category><![CDATA[wireless connections]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3448</guid>
		<description><![CDATA[Have you ever wondered if there is a vibration condition monitoring system that can be installed anywhere and then monitored from anywhere else? Even on your smartphone? Well, there is. The following article explains how Prosig&#8217;s PROTOR-mobile vibration condition monitoring system can offer just such a solution. Sometimes vibration issues are present on equipment that doesn&#8217;t have [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/07/12/vibration-condition-monitoring-it-doesnt-get-any-more-mobile-than-this/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>In-situ balance of an Open Cycle Gas Turbine</title>
		<link>http://blog.prosig.com/2012/07/04/in-situ-balance-of-an-open-cycle-gas-turbine/</link>
		<comments>http://blog.prosig.com/2012/07/04/in-situ-balance-of-an-open-cycle-gas-turbine/#comments</comments>
		<pubDate>Wed, 04 Jul 2012 15:20:32 +0000</pubDate>
		<dc:creator>Chris White</dc:creator>
				<category><![CDATA[applications]]></category>
		<category><![CDATA[clutches]]></category>
		<category><![CDATA[cycle gas turbine]]></category>
		<category><![CDATA[gas generator]]></category>
		<category><![CDATA[gas generators]]></category>
		<category><![CDATA[gas turbines]]></category>
		<category><![CDATA[harmonics]]></category>
		<category><![CDATA[open cycle gas turbine]]></category>
		<category><![CDATA[power turbine]]></category>
		<category><![CDATA[power turbines]]></category>
		<category><![CDATA[shaft speed]]></category>
		<category><![CDATA[vibration levels]]></category>
		<category><![CDATA[vibration monitoring]]></category>
		<category><![CDATA[vibration problem]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3408</guid>
		<description><![CDATA[A vibration problem arose at an Open Cycle Gas Turbine. Following an outage on the four gas turbines and two SSS[1] clutches, the machine returned to service with unacceptable vibration levels on some generation runs resulting in a significant loss of commercial operation. The OCGT consists of two sets of two Rolls Royce ‘Avon MK [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/07/04/in-situ-balance-of-an-open-cycle-gas-turbine/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Wide Band Integrators &#8211; What Are They?</title>
		<link>http://blog.prosig.com/2012/06/15/wide-band-integrators-what-are-they/</link>
		<comments>http://blog.prosig.com/2012/06/15/wide-band-integrators-what-are-they/#comments</comments>
		<pubDate>Fri, 15 Jun 2012 10:40:08 +0000</pubDate>
		<dc:creator>Dr Colin Mercer</dc:creator>
				<category><![CDATA[signal processing]]></category>
		<category><![CDATA[arithmetic]]></category>
		<category><![CDATA[digital integration]]></category>
		<category><![CDATA[Fourier]]></category>
		<category><![CDATA[frequency domain]]></category>
		<category><![CDATA[frequency increases]]></category>
		<category><![CDATA[integrator]]></category>
		<category><![CDATA[integrators]]></category>
		<category><![CDATA[nyquist frequency]]></category>
		<category><![CDATA[omega arithmetic]]></category>
		<category><![CDATA[rectangular integration]]></category>
		<category><![CDATA[sinewave]]></category>
		<category><![CDATA[trapezium integrator]]></category>
		<category><![CDATA[trapezoidal integration]]></category>
		<category><![CDATA[wide band integration]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3346</guid>
		<description><![CDATA[For some time now it has been conventional ‘wisdom’ that using time based digital integration may cause amplitude errors in the result and that these get worse as the frequency increases. As a result of this, integration using Omega arithmetic has been prevalent by using Fourier Transforms of the signal. This, of course, remains a [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/06/15/wide-band-integrators-what-are-they/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Noise &amp; Vibration Analysis: Back To Basics</title>
		<link>http://blog.prosig.com/2012/05/29/back-to-basics/</link>
		<comments>http://blog.prosig.com/2012/05/29/back-to-basics/#comments</comments>
		<pubDate>Tue, 29 May 2012 07:02:40 +0000</pubDate>
		<dc:creator>Chris Mason</dc:creator>
				<category><![CDATA[links]]></category>
		<category><![CDATA[signal processing]]></category>
		<category><![CDATA[data acquisition]]></category>
		<category><![CDATA[db]]></category>
		<category><![CDATA[dynamic range]]></category>
		<category><![CDATA[FFT]]></category>
		<category><![CDATA[Fourier]]></category>
		<category><![CDATA[fourier analysis]]></category>
		<category><![CDATA[frequency hertz]]></category>
		<category><![CDATA[natural vibration]]></category>
		<category><![CDATA[noise floor]]></category>
		<category><![CDATA[octave bands]]></category>
		<category><![CDATA[resonance]]></category>
		<category><![CDATA[sampling]]></category>
		<category><![CDATA[third octave]]></category>
		<category><![CDATA[time frequency]]></category>
		<category><![CDATA[vibration data]]></category>
		<category><![CDATA[vibration engineers]]></category>
		<category><![CDATA[vibration frequency]]></category>
		<category><![CDATA[weighting]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3299</guid>
		<description><![CDATA[Sometimes it doesn&#8217;t hurt to revisit some of the basic building blocks that form the foundation of what we do. And so we have gathered together a few of our most popular past articles that deal with the fundamental aspects of measuring and analysing noise and vibration data. Please leave a comment if you have [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/05/29/back-to-basics/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Where Does The Noise Come From?</title>
		<link>http://blog.prosig.com/2012/05/14/where-does-the-noise-come-from/</link>
		<comments>http://blog.prosig.com/2012/05/14/where-does-the-noise-come-from/#comments</comments>
		<pubDate>Mon, 14 May 2012 14:05:08 +0000</pubDate>
		<dc:creator>Dr Colin Mercer</dc:creator>
				<category><![CDATA[signal processing]]></category>
		<category><![CDATA[amplitude spectra]]></category>
		<category><![CDATA[amplitude spectrum]]></category>
		<category><![CDATA[db scale]]></category>
		<category><![CDATA[frequency domain]]></category>
		<category><![CDATA[noise floor]]></category>
		<category><![CDATA[noisy signal]]></category>
		<category><![CDATA[phase noise]]></category>
		<category><![CDATA[phase spectra]]></category>
		<category><![CDATA[phase spectrum]]></category>
		<category><![CDATA[signal to noise]]></category>
		<category><![CDATA[signal to noise ratio]]></category>
		<category><![CDATA[sinewave]]></category>
		<category><![CDATA[time delay]]></category>
		<category><![CDATA[time domain]]></category>

		<guid isPermaLink="false">http://blog.prosig.com/?p=3198</guid>
		<description><![CDATA[When one thinks of noise in a signal it is generally associated with having been added in some way to the amplitude of a signal.  This is not always the case. The two sinewaves shown in Figure 1 appear similar with the same frequency and amplitude except that the top one appears to have some [...]]]></description>
		<wfw:commentRss>http://blog.prosig.com/2012/05/14/where-does-the-noise-come-from/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
	</channel>
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