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Module by: Erik Luther. E-mail the author

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Name: DSP Laboratory: Aliasing
ID: m13034
Language: English (en)
Summary: We will now look at aliasing and its effect on the sampled signal. As you know, aliasing exists whenever signal frequencies greater than Fs/2 are sampled using a sampling frequency of Fs. To eliminate aliasing, most sound cards and DSP boards have some sort of built-in analog anti-aliasing filter that removes all input signals greater than a certain frequency prior to sampling. It is important to remember that anti-aliasing filters must do the filtering prior to sampling – otherwise, the high-frequency signals would have already aliased to lower frequencies by the sampling process.
Subject: Science and Technology
Keywords: 6711, Digital, dsk, DSP, labview, LabVIEW DSP, lv, Processing, Signal, speedy, speedy 33, texas instruments, ti, tidsk
Document Type: -//CNX//DTD CNXML 0.5//EN
License: Creative Commons Attribution License CC-BY 2.0

Authors: Erik Luther (erik.luther@ni.com)
Copyright Holders: Erik Luther (erik.luther@ni.com)
Maintainers: Erik Luther (erik.luther@ni.com)

Latest version: 1.2 (history)
First publication date: Sep 20, 2005 12:22 pm -0500
Last revision to module: Sep 20, 2005 1:22 pm -0500

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Version History

Version: 1.2 Sep 20, 2005 1:22 pm -0500 by Erik Luther
Changes:
nothing changed

Version: 1.1 Sep 20, 2005 1:16 pm -0500 by Erik Luther
Changes:
Translated from Word and Published

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American Chemical Society (ACS) Style Guide:

Luther, E. DSP Laboratory: Aliasing, OpenStax_CNX Web site. http://cnx.org/content/m13034/1.2/, Sep 20, 2005.

American Medical Assocation (AMA) Manual of Style:

Luther E. DSP Laboratory: Aliasing [OpenStax_CNX Web site]. September 20, 2005. Available at: http://cnx.org/content/m13034/1.2/.

American Psychological Assocation (APA) Publication Manual:

Luther, E. (2005, September 20). DSP Laboratory: Aliasing. Retrieved from the OpenStax_CNX Web site: http://cnx.org/content/m13034/1.2/

Chicago Manual of Style (Bibliography):

Luther, Erik. "DSP Laboratory: Aliasing." OpenStax_CNX. September 20, 2005. http://cnx.org/content/m13034/1.2/.

Chicago Manual of Style (Note):

Erik Luther, "DSP Laboratory: Aliasing," OpenStax_CNX, September 20, 2005, http://cnx.org/content/m13034/1.2/.

Chicago Manual of Style (Reference, in Author-Date style):

Luther, E. 2005. DSP Laboratory: Aliasing. OpenStax_CNX, September 20, 2005. http://cnx.org/content/m13034/1.2/.

Modern Languages Association (MLA) Style Manual:

Luther, Erik. DSP Laboratory: Aliasing. OpenStax_CNX. 20 Sep. 2005 <http://cnx.org/content/m13034/1.2/>.