Information Theory Applied to Audio Signal Processing/Broadcasting

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Discussion Overview

The discussion revolves around the application of Information Theory to audio signal processing and broadcasting. Participants explore relevant literature and concepts, particularly focusing on entropy coding and its implications for audio compression.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks resources on applying Information Theory to audio signals and asks for book recommendations.
  • Another participant references Shannon's original paper, suggesting its methodology could be relevant to audio signals but requests clarification on the original poster's intent.
  • A later post mentions discovering entropy coding while researching audio signal processing, indicating its significance in Information Theory.
  • One participant recommends "Elements of Information Theory" as a key text but expresses uncertainty about the use of entropy codes in audio compression.
  • Another participant asserts that Huffman coding is not used in audio coding but mentions Rice coding as relevant to the FLAC format, suggesting further reading on that topic.

Areas of Agreement / Disagreement

Participants express varying levels of knowledge about the application of Information Theory to audio processing, with some uncertainty regarding the specific coding methods used in audio compression. There is no consensus on the applicability of certain coding techniques.

Contextual Notes

There are limitations in the discussion regarding the specific applications of entropy coding in audio compression and the definitions of terms used, which may affect the clarity of the conversation.

Who May Find This Useful

Readers interested in Information Theory, audio signal processing, and coding techniques may find this discussion relevant.

kususe
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I'm looking for an appllication of Information Theory applied to processing/broadcasting of an audio signal, but i have no idea.
Do you know any books where i can look for this subject?
Thank you in advance.
 
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Here's Shannon's original paper:
http://cm.bell-labs.com/cm/ms/what/shannonday/shannon1948.pdf

The methodology was developed to characterize signals on transmission lines, so I suppose it could be applied to audio signals.

But I'm thinking you have something else in mind. Can you elucidate?
 
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When I wrote last message I did not have any idea.
But, lookinf for on books about audio signal processing i found an a grest part called (entropy coding). Entropy is in of the most important concept in information theory and so, I'm studing what this type of coding reale with.

Thanks for tour suggestions.
 
The bible of InfoTheory is:
Elements of Information Theory by Thomas M. Cover and Joy A. Thomas (2nd ed, Jul 18, 2006)
but I would suggest a wander through wikipedia "Information Theory" and its links for a start.

I'm not sure that entropy codes, like Huffman, are used in audio compression but you may find something of interest anyway.
 
You are right.
Huffman code is not used in audio coding.
But, Rice code belongs to that category like Huffman one, is used to obtain FLAC format after a particular use of a linear precition filter.
If you are interested, look at Wikipedia page about FLAC.
 

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