Spectral Entropy of a signal and its physical significance

Started by July 24, 2013
Hi,
I would like to know about the spectral entropy of a signal and what does it mean in physical world. As I understand, the spectral entropy of a particular frequency band gives the energy distribution of the signal. High value of entropy indicates the existence of a sharp peak in that frequency band. Is that right?

Your response will be highly appreciated.

Thanks in advance.
Hi,

The entropy is nothing more than the measure of amount of disorders in a
system !

For the spectrum entropy tells me how different the distribution of energy
is ...

example:

See this vector 4 position he has all the numbers different from one another

d = [1 0 2 9];

Entropy
0.520426041484281

Now let's take another vector d = [4 4 4 4], we note that this has all values
equal to its entropy would be

Entropy
0.999999999997045

In a real world nothing is really in perfect order...

High value of entropy indicates the existence of a constant similarity of
energy (Small Variations)

Low value of entropy indicates disorders, difference, irregularity !
Regards,
Eder de Souza

On Wed, Jul 17, 2013 at 6:53 PM, Samiul wrote:

> **
> Hi,
> I would like to know about the spectral entropy of a signal and what does
> it mean in physical world. As I understand, the spectral entropy of a
> particular frequency band gives the energy distribution of the signal. High
> value of entropy indicates the existence of a sharp peak in that frequency
> band. Is that right?
>
> Your response will be highly appreciated.
>
> Thanks in advance.
>
>
>