Connexions

Sections
You are here: Home » Content » Discrete-Time Signals

About: Discrete-Time Signals

Module by: Don Johnson

View content

Metadata

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

How to Reuse and Attribute This Content

If you derive a copy of this content using a Connexions account and publish your version, proper attribution of the original work will be automatically done for you.

If you reuse this work elsewhere, in order to comply with the attribution requirements of the license (CC-BY 1.0), you must include

  • the authors' names: Don Johnson
  • the title of the work: Discrete-Time Signals
  • the Connexions URL where the work can be found: http://cnx.org/content/m0009/2.24/

See the citation section below for examples you can copy.

How to Cite and Attribute This Content

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/>.