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About: Spectrograms

Module by: Don Johnson

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Metadata

Name: Spectrograms
ID: m0505
Language: English (en)
Summary: Spectrograms visually represent the speach signal, and the calculation of the Spectrogram is briefly explained.
Subject: Science and Technology
Keywords: DFT, digital signal processing, discrete Fourier transform, DSP, Fourier transform, Hanning window, spectrograms
Document Type: -//CNX//DTD CNXML 0.5 plus MathML//EN
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), CJ Ganier (seejaie@rice.edu), John Cottrell (jac3@rice.edu)

Version: 2.18 (history)
Created: Jul 18, 2000 12:00 am GMT-5
Revised: Nov 30, 2007 4:38 pm US/Central

Version History

Version: 2.18 Nov 30, 2007 4:38 pm US/Central by Don Johnson
Changes:
Made edits suggested in lens review.

Version: 2.17 Jun 7, 2007 5:46 pm GMT-5 by Don Johnson
Changes:
Fixed a bad reference.

Version: 2.16 Apr 25, 2005 7:53 pm GMT-5 by Charlet Reedstrom
Changes:
update to cnxml-0.5

Version: 2.15 Jul 27, 2003 3:20 pm GMT-5 by Don Johnson
Changes:
Fixed intermodule link errors.

Version: 2.14 Aug 16, 2002 12:00 am GMT-5 by (Unknown)
Changes:
Fixed several math errors.

Version: 2.13 Aug 14, 2002 12:00 am GMT-5 by (Unknown)
Changes:
found that print problem is in the last math in exercise 1, replaced unicode apos with keyboard apostrophe, removed hardcoded figure number in cnxn

Version: 2.12 Aug 5, 2002 12:00 am GMT-5 by (Unknown)
Changes:
Testing for MathML bugs. None found. changed mode=inline to default action.

Version: 2.11 Apr 22, 2002 12:00 am GMT-5 by (Unknown)
Changes:
audited for cnxml and mathml errors

Version: 2.10 Oct 23, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Fixed error in note placement.

Version: 2.9 Sep 11, 2001 12:00 am GMT-5 by Brent Hendricks
Changes:
Converted to CNXML 0.3.5

Version: 2.8 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Changed <m:and/> to <m:mo>and</m:mo> (Jenn).

Version: 2.7 Aug 24, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Changed keywords.

Version: 2.6 Aug 20, 2001 12:00 am GMT-5 by (Unknown)
Changes:
I re-uploaded the images and their .eps files.

Version: 2.5 Aug 20, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Uplodad the figures.

Version: 2.4 Aug 20, 2001 12:00 am GMT-5 by (Unknown)
Changes:
upload the figures for this module.

Version: 2.3 Jul 17, 2001 12:00 am GMT-5 by (Unknown)
Changes:
keywords added
made John Cottrell a maintainer
fixed minor errors

Version: 2.2 Jun 1, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Nothing, I am simply re-presenting to reflect changes in the stylesheet.

Version: 2.1 May 31, 2001 12:00 am GMT-5 by (Unknown)
Changes:
Updated from version .2 CNXML to .3 CNXML, converting Presentation MathML to Content.

Version: 2.0 Oct 17, 2000 12:00 am GMT-5 by Brent Hendricks
Changes:
Bumped version to 2.0

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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. Spectrograms, Connexions Web site. http://cnx.org/content/m0505/2.18/, Nov 30, 2007.

American Medical Assocation (AMA) Manual of Style:

Johnson D. Spectrograms [Connexions Web site]. November 30, 2007. Available at: http://cnx.org/content/m0505/2.18/.

American Psychological Assocation (APA) Publication Manual:

Johnson, D. (2007, November 30). Spectrograms. Retrieved from the Connexions Web site: http://cnx.org/content/m0505/2.18/

Chicago Manual of Style (Bibliography):

Johnson, Don. "Spectrograms." Connexions. November 30, 2007. http://cnx.org/content/m0505/2.18/.

Chicago Manual of Style (Note):

Don Johnson, "Spectrograms," Connexions, November 30, 2007, http://cnx.org/content/m0505/2.18/.

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

Johnson, D. 2007. Spectrograms. Connexions, November 30, 2007. http://cnx.org/content/m0505/2.18/.

Modern Languages Association (MLA) Style Manual:

Johnson, Don. Spectrograms. Connexions. 30 Nov. 2007 <http://cnx.org/content/m0505/2.18/>.