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.

# Spectral Entropy of a signal and its physical significance

Started by ●July 24, 2013

Reply by ●August 14, 20132013-08-14

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.

>

>

>

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.

>

>

>