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If the shape of the waveform is desired, you should sample at a rate approximately 10 times the Nyquist theory. You can interactively view the effects of aliasing on a signal by running this LabVIEW Player enabled Example.
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zone.ni.com/devzone/cda/tut/p/id/3000
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Ask the experts your physics and astronomy questions, read answer archive, and more. ... Analog signals are usually low-pass filtered to remove most or all of the components above the Nyquist frequency in order to avoid aliasing. Answered by: Scott Wilber, President, ComScire - Quantum World Corporation...
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www.physlink.com/education/AskExperts/ae490.cfm
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Since aliasing is such a serious problem, and since we often have input signals with lots of upper harmonics, sound cards always incorporate anti-aliasing filters to drastically reduce any components above the Nyquist limit.
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www.daqarta.com/dw_0haa.htm
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The key to understanding aliasing and what we do about it is the Nyquist limit. The Nyquist limit gives us a theoretical limit to what rate we have to sample a signal that contains data at a certain maximum frequency.
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www.cs.brown.edu/exploratories/freeSoftware/repository/...
www.cs.brown.edu/exploratories/freeSoftware/repository/edu/brown/cs/exploratories/applets/nyquist/nyquist_limit_guide.html
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Propeller Aliasing ... Signal Processing Tutorial: Nyquist Sampling Theorem and Anti-Aliasing ... Signal Processing Tutorial: Sampling/Anti-Aliasing or the Nyquist Sampling Theorem...
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www.youtube.com/watch?v=Fy9dJgGCWZI
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What is Sampling theorem? Nyquist freq? aliasing. ... Sketch a Nyquist Diagram - For the unity-feedback control system (see in the nyquist.jpg file) (a) Draw the Nyquist Path and the Nyquist Diagram of the system. (b) Determine the system stability.
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www.brainmass.com/homework-help/electrical-computer-eng...
www.brainmass.com/homework-help/electrical-computer-engineering/communications-systems/10950
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Slide 33 of 49...
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users.fmrib.ox.ac.uk/~peterj/lectures/kspace/sld033.htm
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Sampling Rate and the Aliasing Artifact ... ALIASING ARTIFACT ... JA Parker presents good examples of aliasing artifacts in two-dimensional nuclear medicine images due to undersampling on pages 338-339 of his book, Image Processing in Radiology. In these examples, note banding and striping at lower frequencies and in...
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www.med.harvard.edu/JPNM/physics/didactics/improc/intro...
www.med.harvard.edu/JPNM/physics/didactics/improc/intro/aliasing.html
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