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About: Ideal Filters

Module by: Richard Baraniuk. E-mail the author

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Name: Ideal Filters
ID: m10103
Language: English (en)
Summary: Describes five ideal filters.
Subject: Science and Technology
Keywords: allpass, bandpass, bandstop, filter, fourier transform, frequency domain, highpass, lowpass, signals, systems
Document Type: -//CNX//DTD CNXML 0.5//EN
License: Creative Commons Attribution License CC-BY 1.0

Authors: Richard Baraniuk (
Copyright Holders: Richard Baraniuk (
Maintainers: Justin Romberg (, Richard Baraniuk (, Michael Haag (

Latest version: 2.7 (history)
First publication date: Jun 14, 2001 12:00 am -0500
Last revision to module: Jul 14, 2005 7:49 pm -0500


PDF: m10103_2.7.pdf PDF file, for viewing content offline and printing. Learn more.
XML: m10103_2.7.cnxml XML that defines the structure and contents of the module, minus any included media files. Can be reimported in the editing interface. Learn more.

Version History

Version: 2.7 Jul 14, 2005 7:49 pm -0500 by Charlet Reedstrom
update to cnxml-0.5, fix typo

Version: 2.6 Jun 10, 2002 12:00 am -0500 by (Unknown)
changed figure files from jpg to png and file src in module

Version: 2.5 Jun 7, 2002 12:00 am -0500 by (Unknown)
converted module to cnxml-0.4

Version: 2.4 Nov 20, 2001 12:00 am -0600 by Brent Hendricks
Updated to CNXML 0.3.5

Version: 2.3 Jul 20, 2001 12:00 am -0500 by (Unknown)
Added jrom as maintainer in database

Version: 2.2 Jun 19, 2001 12:00 am -0500 by (Unknown)
Uploaded images.

Version: 2.1 Jun 14, 2001 12:00 am -0500 by (Unknown)
Initial conversion from 0.1

Version: 2.0 Jun 14, 2001 12:00 am -0500 by (Unknown)
Added initial template for new module m10103

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American Chemical Society (ACS) Style Guide:

Baraniuk, R. Ideal Filters, OpenStax-CNX Web site., Jul 14, 2005.

American Medical Assocation (AMA) Manual of Style:

Baraniuk R. Ideal Filters [OpenStax-CNX Web site]. July 14, 2005. Available at:

American Psychological Assocation (APA) Publication Manual:

Baraniuk, R. (2005, July 14). Ideal Filters. Retrieved from the OpenStax-CNX Web site:

Chicago Manual of Style (Bibliography):

Baraniuk, Richard. "Ideal Filters." OpenStax-CNX. July 14, 2005.

Chicago Manual of Style (Note):

Richard Baraniuk, "Ideal Filters," OpenStax-CNX, July 14, 2005,

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

Baraniuk, R. 2005. Ideal Filters. OpenStax-CNX, July 14, 2005.

Modern Languages Association (MLA) Style Manual:

Baraniuk, Richard. Ideal Filters. OpenStax-CNX. 14 July 2005 <>.