Image:Sampled-sines-cosines-aliasing.png

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Image:Sampled-sines-cosines-aliasing.png

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Relationship between positive and negative frequency in sampling (aliasing to...)

I drew this figure using idraw on my Pentium-based wearable computer, in order to illustrate the concept of negative frequency to my ECE431 elecrical engineering class at the University of Toronto.

I license this illustration for use in Wikipedia, under

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers.

This graph image was uploaded in a raster image format such as PNG, GIF, or JPEG. However, it contains information that could be stored more efficiently and/or accurately in the SVG format, as a vector graphic.
If possible, please upload an SVG version of this image. After doing so, please replace all instances of the previous version throughout Wikipedia (noted under the “File links” header), tag the old version with {{Vector version available|NewImage.svg}}, and remove this tag. For more information, see Wikipedia:Preparing images for upload. For assistance with converting to SVG, please see the Graphics Lab.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	20:48, 2 December 2005	460×1,255 (72 KB)	Bob K (Talk \| contribs)	(Added a formula to existing figure. This is 2nd attempt to upload. Not sure what went wrong the first time.)
	06:21, 2 December 2005	452×1,458 (82 KB)	Bob K (Talk \| contribs)	(Fixed several typos)
	05:15, 2 December 2005	513×1,655 (62 KB)	Bob K (Talk \| contribs)	(Reverted to earlier revision)
	05:10, 2 December 2005	279×866 (150 KB)	Bob K (Talk \| contribs)	(I downloaded http://en.wikipedia.org/wiki/Image:Sampled-sines-cosines-aliasing.png, and fixed several typos.)
	17:16, 22 October 2004	513×1,655 (62 KB)	Glogger (Talk \| contribs)	(Relationship between positive and negative frequency in sampling (aliasing to...))