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About: Discrete-Time Signals

Module by: Don Johnson

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Name: Discrete-Time Signals
ID: m0009
Language: English (en)
Summary: Signals can be represented by discrete quantities instead of as a function of a continuous variable. These discrete time signals do not necessarily have to take real number values. Many properties of continuous valued signals transfer almost directly to the discrete domain.
Subject: Science and Technology
Keywords: alphabet, complex, complex-valued, decompose, discrete-time, exponential, real-valued, sequences, signals, sine, sinusoid, symbolic-valued signals, systems, unit sample
License: Creative Commons Attribution License CC-BY 1.0

Authors: Don Johnson (dhj@rice.edu)
Copyright Holders: Don Johnson (dhj@rice.edu)
Maintainers: Don Johnson (dhj@rice.edu), Roy Ha (rha@alumni.rice.edu), Benjamin Fite (bfite@rice.edu), Mariyah Poonawala (mariyah@rice.edu), Prashant Singh (prash@ece.rice.edu), Matthew Hutchinson (mhutch@rice.edu)

Version: 2.24 (history)
Created: Jun 28, 2000 12:00 am GMT-5
Revised: Jun 4, 2009 11:24 am GMT-5

Version History

Version: 2.24 Jun 4, 2009 11:24 am GMT-5 by Connexions
Changes:
Modified markup for explicit .eps image reference

Version: 2.23 May 8, 2007 1:51 pm GMT-5 by Don Johnson
Changes:
Changed resolution of unitsample.png and cosine.png to 100dpi.

Version: 2.22 May 8, 2007 1:01 pm GMT-5 by Don Johnson
Changes:
Changed unitsample.eps and cosine.eps

Version: 2.21 Jul 19, 2006 4:36 pm GMT-5 by Charlet Reedstrom
Changes:
Added Matthew Hutchinson as a Maintainer

Version: 2.20 Apr 14, 2005 7:48 pm GMT-5 by Charlet Reedstrom
Changes:
update to cnxml-0.5

Version: 2.19 Jul 27, 2004 12:21 pm GMT-5 by Jenn Drummond
Changes:
Fixed typo ("countinuous") in first paragraph.

Version: 2.18 Jun 2, 2004 10:01 am GMT-5 by Harika Basana
Changes:
241 link added 

Version: 2.17 Jul 9, 2003 2:05 pm GMT-5 by Charlet Reedstrom
Changes:
addmaintainers

Version: 2.16 Sep 7, 2002 12:00 am GMT-5 by (Unknown)
Changes:
Fixed minor typos.

Version: 2.15 Jun 19, 2002 12:00 am GMT-5 by (Unknown)
Changes:
Converted to 4.0
tried to sharpen figures
corrected some content errors
added a link

Version: 2.14 Apr 2, 2002 12:00 am US/Central by (Unknown)
Changes:
Corrected e to a power to read exponential function, and j vs imaginaryi tag.

Version: 2.13 Sep 13, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Removed text duplicated from previous section. (Task 363)

Version: 2.12 Sep 11, 2001 12:00 am GMT-5 by Brent Hendricks
Changes:
Converted to CNXML 0.3.5

Version: 2.11 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes:
added back in names

Version: 2.10 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes:
removed the name tag entirely

Version: 2.9 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes:
removed figure names

Version: 2.8 Aug 23, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Deleted whitespaces after closing math tag.

Version: 2.7 Aug 22, 2001 12:00 am GMT-5 by (Unknown)
Changes:
- Added eps versions of images
- Removed gifs

Version: 2.6 Aug 22, 2001 12:00 am GMT-5 by (Unknown)
Changes:
I joined modules m0009 and m0010 together and  changed the cnxn between them.
-Erin

Version: 2.5 Aug 19, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Merged with module m0010.

Version: 2.4 May 31, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Edited word order in a sentence in the intro paragraph.

Version: 2.3 May 30, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Updated abstract

Version: 2.2 May 29, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Updated from cnxml ver 0.2 to ver 0.3

Version: 2.1 May 25, 2001 12:00 am GMT-5 by (Unknown)
Changes:
fixed <cnxn> to have a correct module id

Version: 2.0 Apr 23, 2001 12:00 am GMT-5 by Brent Hendricks
Changes:
Bumped version to 2.0

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The following citation styles comply with the attribution requirements for the license (CC-BY 1.0) of this work:

American Chemical Society (ACS) Style Guide:

Johnson, D. Discrete-Time Signals, Connexions Web site. http://cnx.org/content/m0009/2.24/, Jun 4, 2009.

American Medical Assocation (AMA) Manual of Style:

Johnson D. Discrete-Time Signals [Connexions Web site]. June 4, 2009. Available at: http://cnx.org/content/m0009/2.24/.

American Psychological Assocation (APA) Publication Manual:

Johnson, D. (2009, June 4). Discrete-Time Signals. Retrieved from the Connexions Web site: http://cnx.org/content/m0009/2.24/

Chicago Manual of Style (Bibliography):

Johnson, Don. "Discrete-Time Signals." Connexions. June 4, 2009. http://cnx.org/content/m0009/2.24/.

Chicago Manual of Style (Note):

Don Johnson, "Discrete-Time Signals," Connexions, June 4, 2009, http://cnx.org/content/m0009/2.24/.

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

Johnson, D. 2009. Discrete-Time Signals. Connexions, June 4, 2009. http://cnx.org/content/m0009/2.24/.

Modern Languages Association (MLA) Style Manual:

Johnson, Don. Discrete-Time Signals. Connexions. 4 June 2009 <http://cnx.org/content/m0009/2.24/>.