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About: Speech Processing: Theory of LPC Analysis and Synthesis

Module by: Douglas L. Jones, Swaroop Appadwedula, Matthew Berry, Mark Haun, Jake Janovetz, Michael Kramer, Dima Moussa, Daniel Sachs, Brian Wade. E-mail the authors

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Name: Speech Processing: Theory of LPC Analysis and Synthesis
ID: m10482
Language: English (en)
Summary: Speech analysis and synthesis with Linear Predictive Coding (LPC) exploit the predictable nature of speech signals. Cross-correlation, autocorrelation, and autocovariance provide the mathematical tools to determine this predictability. If we know the autocorrelation of the speech sequence, we can use the Levinson-Durbin algorithm to find an efficient solution to the least mean-square modeling problem and use the solution to compress or resynthesize the speech.
Subject: Science and Technology
Keywords: autocorrelation, autocovariance, correlation, cross-correlation, DSP, levinson-durbin, linear predicitive coding, speech, speech coding, speech compression, speech synthesis
License: Creative Commons Attribution License CC-BY 1.0
Authors: Douglas L. Jones (dl-jones@uiuc.edu), Swaroop Appadwedula (appadwed@uiuc.edu), Matthew Berry (mjberry@uiuc.edu), Mark Haun (markhaun@uiuc.edu), Jake Janovetz (jake@janovetz.com), Michael Kramer (kramer@ifp.uiuc.edu), Dima Moussa (dmoussa@uiuc.edu), Daniel Sachs (sachs@uiuc.edu), Brian Wade (bwade@uiuc.edu)
Copyright Holders: Douglas L. Jones (dl-jones@uiuc.edu), Swaroop Appadwedula (appadwed@uiuc.edu), Matthew Berry (mjberry@uiuc.edu), Mark Haun (markhaun@uiuc.edu), Jake Janovetz (jake@janovetz.com), Michael Kramer (kramer@ifp.uiuc.edu), Dima Moussa (dmoussa@uiuc.edu), Daniel Sachs (sachs@uiuc.edu), Brian Wade (bwade@uiuc.edu)
Maintainers: Douglas L. Jones (dl-jones@uiuc.edu), Swaroop Appadwedula (appadwed@uiuc.edu), Matthew Berry (mjberry@uiuc.edu), Mark Haun (markhaun@uiuc.edu), Daniel Sachs (sachs@uiuc.edu), Erin Maloney (emaloney@rice.edu), Mike Russell (merussel@uiuc.edu), Mark Butala (butala@uiuc.edu), Robert Morrison (rlmorris@uiuc.edu)
Latest version: 2.19 (history)
First publication date: Feb 1, 2002 12:00 am US/Central
Last revision to module: Jun 1, 2009 10:26 am GMT-5
Module XML: m10482_2.19.cnxml

Version History

Version: 2.19 Jun 1, 2009 10:26 am GMT-5 by Connexions
Changes: 
Modified markup for explicit .eps image reference
Version: 2.18 Oct 11, 2004 7:37 am GMT-5 by Charlet Reedstrom
Changes: 
changed some mi to mo
Version: 2.17 Feb 25, 2004 12:30 pm US/Central by Adan Galvan
Changes: 
added maintainer
Version: 2.16 Aug 1, 2003 1:16 pm GMT-5 by Elizabeth Gregory
Changes: 
Updated to 0.5
Version: 2.15 Nov 1, 2002 12:00 am US/Central by (Unknown)
Changes: 
Fixed another error.
Version: 2.14 Nov 1, 2002 12:00 am US/Central by (Unknown)
Changes: 
Italic ls now.
Version: 2.13 Nov 1, 2002 12:00 am US/Central by (Unknown)
Changes: 
2 1s should have been ls.
Version: 2.12 Sep 5, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
added a maintainer
Version: 2.11 Aug 27, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
updated figures
Version: 2.10 Aug 26, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
uploaded figures
Version: 2.9 Aug 26, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
edited for content and style
edited metadata
Version: 2.8 Aug 20, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
edited for content and style
edited metadata
removed MATLAB and processor exercises -- now in other modules
Version: 2.7 Aug 1, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
revised content on Spanish vowels
Version: 2.6 Jun 10, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
edited for style
Version: 2.5 May 30, 2002 12:00 am GMT-5 by (Unknown)
Changes: 
added maintainers
Version: 2.4 Apr 1, 2002 12:00 am US/Central by (Unknown)
Changes: 
I think its done now! fixed it so it will print.
Version: 2.3 Mar 5, 2002 12:00 am US/Central by (Unknown)
Changes: 
Im pretty sure its all done. Minus signs are not showing up in subscripts though.
Version: 2.2 Feb 25, 2002 12:00 am US/Central by (Unknown)
Changes: 
testing to see if the figures will display online
Version: 2.1 Feb 18, 2002 12:00 am US/Central by (Unknown)
Changes: 
just updating
Version: 2.0 Feb 1, 2002 12:00 am US/Central by (Unknown)
Changes: 
Added initial template for new module m10482

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American Chemical Society (ACS) Style Guide:

Jones, D.; Appadwedula, S.; Berry, M.; Haun, M.; Janevitz, J.; Kramer, M.; Moussa, D.; Sachs, D.; Wade, B. Speech Processing: Theory of LPC Analysis and Synthesis, Connexions Web site. http://cnx.org/content/m10482/2.19/, Jun 1, 2009.

American Medical Assocation (AMA) Manual of Style:

Jones D, Appadwedula S, Berry M, et al. Speech Processing: Theory of LPC Analysis and Synthesis [Connexions Web site]. June 1, 2009. Available at: http://cnx.org/content/m10482/2.19/.

American Psychological Assocation (APA) Publication Manual:

Jones, D., Appadwedula, S., Berry, M., Haun, M., Janevitz, J., Kramer, M., Moussa, D., Sachs, D., & Wade, B. (2009, June 1). Speech Processing: Theory of LPC Analysis and Synthesis. Retrieved from the Connexions Web site: http://cnx.org/content/m10482/2.19/

Chicago Manual of Style (Bibliography):

Jones, Douglas, Swaroop Appadwedula, Matthew Berry, Mark Haun, Jake Janevitz, Michael Kramer, Dima Moussa, Daniel Sachs, and Brian Wade. "Speech Processing: Theory of LPC Analysis and Synthesis." Connexions. June 1, 2009. http://cnx.org/content/m10482/2.19/.

Chicago Manual of Style (Note):

Douglas Jones and others, "Speech Processing: Theory of LPC Analysis and Synthesis," Connexions, June 1, 2009, http://cnx.org/content/m10482/2.19/.

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

Jones, D., Appadwedula, S., Berry, M., Haun, M., Janevitz, J., Kramer, M., Moussa, D., Sachs, D., & Wade, B. 2009. Speech Processing: Theory of LPC Analysis and Synthesis. Connexions, June 1, 2009. http://cnx.org/content/m10482/2.19/.

Modern Languages Association (MLA) Style Manual:

Jones, Douglas, Swaroop Appadwedula, Matthew Berry, Mark Haun, Jake Janevitz, Michael Kramer, Dima Moussa, Daniel Sachs, and Brian Wade. Speech Processing: Theory of LPC Analysis and Synthesis. Connexions. 1 June 2009 <http://cnx.org/content/m10482/2.19/>.