Information Theory Applied to Audio Signal Processing/Broadcasting

In summary, the conversation discusses the application of Information Theory to processing and broadcasting of audio signals. The methodology was originally developed for characterizing signals on transmission lines, but the speaker is looking for more specific information on audio signal processing. They mention finding a section on entropy coding in a book about audio signal processing and studying the concept further. Another suggestion is to refer to the book "Elements of Information Theory" by Thomas M. Cover and Joy A. Thomas, or to explore the topic on Wikipedia. The speaker also mentions that while Huffman code is not used in audio coding, Rice code is used for obtaining FLAC format after using a linear prediction filter.
  • #1
kususe
22
0
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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  • #2
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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  • #3
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  • #4
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.
 
  • #5
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.
 
  • #6
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.
 

1. What is information theory and how is it applied to audio signal processing/broadcasting?

Information theory is a mathematical framework for understanding and quantifying the amount of information that can be transmitted through a communication channel. It is applied to audio signal processing/broadcasting by analyzing the various components of an audio signal, such as frequency, amplitude, and duration, to determine the most efficient way to encode and transmit the information.

2. How does information theory impact the quality of audio signals?

Information theory helps to optimize the encoding and transmission of audio signals, which can ultimately improve the quality of the signal. By using coding techniques that minimize the amount of information loss, the resulting audio signal can be of higher fidelity and clarity.

3. What are some common techniques used in information theory for audio signal processing/broadcasting?

Some common techniques used in information theory for audio signal processing/broadcasting include source coding, channel coding, and error correction coding. These techniques help to reduce the amount of data that needs to be transmitted, minimize errors during transmission, and improve the overall efficiency of the communication channel.

4. How does information theory impact the transmission and storage of audio data?

Information theory plays a crucial role in the transmission and storage of audio data. By using efficient coding techniques, the amount of data that needs to be transmitted or stored can be significantly reduced, allowing for faster transmission and more efficient use of storage space. Additionally, error correction coding helps to ensure that the data is transmitted accurately and can be recovered even if errors occur during transmission.

5. What are some current developments in information theory for audio signal processing/broadcasting?

Some current developments in information theory for audio signal processing/broadcasting include the use of advanced coding techniques such as deep learning and neural networks. These techniques allow for more complex and efficient coding schemes, leading to improved audio quality and more efficient use of the communication channel. Additionally, there is ongoing research in using information theory to optimize audio signal processing for specific applications, such as speech recognition or music streaming.

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